Updated information about the distribution of the genus Scorpio in Northern Algeria and a redescription of Scorpio trarasensis

 

Eric Ythier and co-workers recently published an article with updated information about the Scorpio Linnaeus, 1758 (Scorpionidae) fauna in Northern Algeria. The authors also present a redescription of Scorpio trarasensis Bouisset & Larrouy (1962). The article also includes an identification guide for the Scorpio species known from Northern Algeria.

Abstract:
Scorpio trarasensis Bouisset & Larrouy (1962), from the Trara Massif, in the western part of the Tellian Atlas of Algeria, is redescribed on the basis of new material collected and a neotype is designated (original type material is considered lost). The geographical distribution of the genus Scorpio Linnaeus, 1758 in Northern Algeria is updated based on additional material examined, and a key for their identification is proposed.

Reference:
Ythier E, Hammou MA, El Bouhissi  M, Mairif M. Redescription of Scorpio trarasensis Bouisset & Larrouy, 1962 and update on the distribution of the genus Scorpio linnaeus, 1758 in Northern Algeria (Scorpiones: Scorpionidae). Arachnides. 2025(120):1-11. [Open Access]

Thanks to Eric and Gerard for sharing this article with me!

Family Scorpionidae

Two new species in the genus Scorpio have been described from Southeastern Turkey

 

No Christmas holiday for scorpion news! Happy Seasons Greetings everyone! 

Ersen Yagmur and co-workers recently published an article describing two new species of Scorpio Linnaeus, 1758 (Scorpionidae) from Southeastern Turkey.

Scorpio karakurti Yagmur, 2024

Scorpio Sirnakensis Yagmur, 2024

Abstract:
Two new species, Scorpio karakurti sp.n. and S. sirnakensis sp.n. are described and illustrated from the Southеastеrn region of Turkey. S. karakurti sp.n. is detected from Batman and Diyarbakır provinces and can be distinguished from all species of the genus Scorpio by its higher pectinal teeth numbers, especially in males (10–11 in females and 11–15 in males). S. sirnakensis sp.n is detected from Şırnak province and can be distinguished by elongated chela and telson shape and genital operculum shape of females. The new species are compared with the known species of the genus Scorpio Linnaeus, 1758 in the Middle East.

Reference:
Yagmur EA, Hussen FS, Karakurt S, Kurt R, Sipahioglu Ö, Kartal I. Two new species of the genus Scorpio L., 1758 from Southеastеrn Turkey (Scorpiones: Scorpionidae). Arthropoda Selecta. 2024;33(4):559-89. [Open Access]

Thanks to Ersen for sending me their new article!

Family Scorpionidae

 

Redescription of of Scorpio palmatus

 

Scorpio palmatus (Ehrenberg, 1828) (Scorpionidae) has a wide distribution in parts of northern Africa and The Middle East. Ersen Aydın Yağmur and Ahmed Badry have recently published a redescription of a male (the species' neotype) and female specimen of this species.

Abstract:
Scorpio palmatus (Ehrenberg, 1828) is redescribed based on the male neotype and a female specimen from northern Egypt. Illustrations prepared under white and UV lights and measurements are given.

Reference:
Yagmur EA, Badry A. Description of a neotype of Scorpio palmatus (Ehrenberg, 1828) (Scorpiones: Scorpionidae). Serket. 2024;20(3):215-29. [Open Access]

Thanks to Hisham El-Hennaway for sending me this article!

Family Scorpionidae

First record of Scorpio jordanensis from Syria

 

Ersen Yagmur and Ahmed Badry recently reported the discovery of Scorpio jordanensis Afifeh, Yagmur, Al-Saraireh & Amr, 2024 (Scorpionidae) from Syria. This species has previously only been reported from Jordan.

Abstract:
Scorpio jordanensis Abu Afifeh et al., 2024 is recently described from Jordan. Now, it is recorded from Syria. Its illustrations and measurements are given.

Reference:
Yagmur EA, Badry A. First record of Scorpio jordanensis from Syria (Scorpiones: Scorpionidae). Serket. 2024;20(3):230-5. [Open Access]

Thanks to Hisham El-Hennawy for sending me this article!

A new genus and three new species in the family Scorpionidae from Jordan

 

Bassam Abu Afifeh and co-workers recently published a revision of the genus Scorpio Linnaeus, 1758 (Scorpionidae) in Jordan. The widespread genus had only one species for many decades, but were poorly studied. In recent years the genus has been studies by several authors and many new species have been described, conforming previous suspicions that Scorpio maurus Linné, 1758 was a species complex hiding many cryptic species. 

The revision of the Scorpio from Jordan has resulted in a new genus and three new species.

Jordanius Afifeh, Yagmur, Al-Saraireh & Amr, 2024 (new genus)

Jordanius maysaraensis Afifeh, Yagmur, Al-Saraireh & Amr, 2024 (new species)

Scorpio jordanensis Afifeh, Yagmur, Al-Saraireh & Amr, 2024 (new species)

Scorpio wahbehi Afifeh, Yagmur, Al-Saraireh & Amr, 2024 (new species)

Jordanius granulomanus (Al-Saraireh, Yagmur, Afifeh & Amr, 2023) is transferred to the new genus from Scorpio.

In addition, Scorpio propinquus (Simon, 1872) is considered nomen dubium.

The article has an identification key for the Scorpionidae taxa found in Jordan. 

Abstract:
Several new Scorpio populations are studied from various habitats in Jordan, including specimens previously identified as Scorpio kruglovi Birula, 1910 and S. fuscus (Ehrenberg, 1829). A new scorpionid genus, Jordanius gen. n. is described, mainly differentiated from the genus Scorpio Linnaeus, 1758 by the elongation and heavy patterns of granulation of chela manus, and granulated chela fingers. Scorpio granulomanus Al-Saraireh et al., 2023 is transferred to the new genus, and Jordanius maysaraensis gen. et sp. n. is described. Also, Scorpio jordanensis sp. n. and S. wahbehi sp. n. are described. Detailed redescriptions and illustrations of S. palmatus (Ehrenberg, 1828) and S. fuscus (Ehrenberg, 1829) are given. A neotype of S. palmatus from Alexandria, Egypt and a neotype of S. fuscus from Lebanon are designated. A key to the family Scorpionidae in Jordan and comments on dubious or incorrect records from Jordan are provided. Lastly, S. propinquus is suggested as nomen dubium.

Reference:
Afifeh BA, Yagmur EA, Al-Saraireh M, Amr Z. Revision of the genus Scorpio in Jordan, with a description of a new genus and three new species (Scorpiones: Scorpionidae). Euscorpius. 2024(391):1-66. [Open Access]

Family Scorpionidae

A new paper investigating the phylogeography and evolutionary history of the burrowing scorpion genus Scorpio

 

The genus Scorpio Linnaeus, 1758 (Scorpionidae) was for most of the last century known to have only one species, Scorpio maurus Linnaeus, 1758, which has an impressing distribution ranging from most of North Africa to the eastern parts of the Middle East. 

In the last decades it became clear that Scorpio maurus was a species complex with many hidden species, and today the genus consists of 24 species. However, the taxonomical and phylogentic situation of the genus is challenging, especially because of the lack of reliable morphological characters to distinguish the species and subspecies. Also, several new species have been described without genetic analysis confirming the species status. 

Manel Khammassi and co-workers have recently published a study with the aim of the present study to analyze the phylogenetic relationships and the evolutionary events that promoted diversification within the genus Scorpio. The study revealed twenty distinct lineages forming two geographically separate clades, a Maghrebian clade and a Middle Eastern clade. Most named species were found within the lineages, but additional lineages found are indicating potential new, unnamed species.

Abstract:
The burrowing scorpions of the genus Scorpio Linnaeus, 1758 were considered to be a single polymorphic species, Scorpio maurus Linnaeus, 1758, distributed from West Africa across the Sahel and the Saharan highlands through the Maghreb and the Middle East, to Iran. After various revisions, the complex was treated as including 18 species and seven subspecies. Five additional new Scorpio species were recently described. However, doubts remain regarding the validity of these taxa due to the lack of reliable characters and the lack of genetic data for many species. The aim of the present study was to analyze the phylogenetic relationships and the evolutionary events that promoted diversification within the genus. Phylogenetic analyses were performed using 633 base pairs of the mitochondrial COI gene from 51 individuals collected in Tunisia, Morocco, and Egypt, combined with 74 previously published sequence data. Phylogenetic analyses revealed twenty distinct lineages forming two geographically separate clades, a Maghrebian clade and a Middle Eastern clade. Although most named species formed distinct lineages, various additional lineages were identified, highlighting potential unnamed species. Divergence time estimates indicate that the division within the genus Scorpio began during the Mid-Miocene, a period characterized by tectonic events coupled with climatic oscillations. Further differentiation occurred during the Miocene-Pliocene transition when climatic fluctuations resumed and the Mediterranean became increasingly arid. Speciation within the genus Scorpio may have been driven by the expansion of the savannas and Sahara Desert, the associated reduction of a once widespread rainforest into numerous micro-refugia in the mountains of the Mediterranean region, and by adaptation to these new habitats

Reference:
Khammassi M, Nouira S, Badry A, Sadine SE, Harris DJ. Phylogeography and evolutionary history of the burrowing scorpion genus Scorpio Linnaeus, 1758 (Scorpiones: Scorpionidae) in the Mediterranean Basin. Organisms Diversity & Evolution. 2024:1-18. [Subscritpion required for full text]

Family Scorpionidae

Another case of regeneration of body parts in scorpions

 

Morphological anomalies in scorpions are well known. Some are inborne teratologies, others are caused by a failed molting process or due to accidents from predators attacks and similar. Scorpions can survive the loss of or damages to some of the appendages, but loss of the last part of the tail will usually cause death after a certain time as the anal organs are gone and the scorpion will die of constipation. 

Lost or damaged appendages can be regenerated completely or partly in scorpions during future molts. Ersen Yagmur and co-workers have recently published a case of regeneration of a part of the pedipalp in Scorpio kruglovi Birula, 1910.

Abstract:
A new case of pedipalp regeneration is described and illustrated in a subadult female of Scorpio kruglovi Birula, 1910. A small, regenerated part of chela is observed on the anterior aspect of a normally developed right patella. This is the second published case of pedipalp regeneration.

Reference:
Yağmur EA, Kılıç MS, Güneş E. A new case of pedipalp regeneration in Scorpio kruglovi Birula, 1910 (Scorpiones: Scorpionidae). Euscorpius. 2024;2024(390):1-3. [Open Access]

 

A new species of Scorpio from Algeria

 

Eric Ythier and co-workers recently published an article describing a new species of Scorpio Linnaeus, 1758(Scorpionidae) from Atakor volcanic field in the Hoggar massif in the south of Algeria.

Scorpio atakor Ythier, Sadine, Bengaid & Lourenço, 2024

The authors also raise Scorpio trarasensis Bouisset & Larrouy, 1962 to species status after it previously was synonymized with Scorpio maurus maurus Linnaeus, 1758 (it was originally described as a subspecies of S. maurus.

Abstract:
A new species of Scorpio Linnaeus, 1758 is described from the Atakor volcanic field in the Hoggar massif, located in the South of Algeria. Scorpio atakor sp. nov. most certainly represents a vicariant element of Scorpio tassili Lourenço & Rossi, 2016, species equally described from a massif formation, the Tassili N’Ajjer, in the South of Algeria. Both species are distributed in high altitudes in these massifs. Scorpio trarasensis Bouisset & Larrouy, 1962 stat. rev., stat. nov. is also restored from its synonymy with Scorpio maurus maurus Linnaeus, 1758 and raised to species level. The number of confirmed species of Scorpio in Algeria is raised to six.

Reference:
Ythier E, Sadine SE, Bengaid Y, Lourenco WR. A new species of Scorpio Linnaeus, 1758 from Algeria (Scorpiones: Scorpionidae) and a new case of vicariance. Arachnides. 2024(113):1-11. [Open Access]

Family Scorpionidae

A new species of Scorpio from Jordan

 

 Mohammad Al-Saraireh and co-workers have recently described a new species of Scorpio Linnaeus, 1758 (Scorpionidae) from the Dibbeen Forest, Jerash Governorate in Jordan.

Scorpio granulomanus Al-Saraireh, Yagmur, Afifeh & Amr, 2023

Abstract:
A new species Scorpio granulomanus sp. n. is described and illustrated from Dibbeen Forest, Jerash Governorate, Jordan. The new species is compared with the previously recorded species of the genus Scorpio in the Middle East; it can be distinguished from all other congeners by its very large, pointed granules on the dorsoexternal surface of the chela manus, and an untypically elongated chela manus.

Reference:
Al-Saraireh M, Yagmur EA, Afifeh BA, Amr Z. A new species of Scorpio from Jordan (Scorpiones: Scorpionidae). Euscorpius. 2023(369):1-17. [Open Access]

Family Scorpionidae

Three new species of Scorpio from the Oriental region in Morocco

 

Eric Ythier and Alexandre Francois have recently published a study of scorpions collected in the Oriental region in Morocco. Based on the material, three new species in the genus Scorpio Linnaeus, 1758 (Scorpionidae) are described.

Scorpio iznassen Ythier & Francois, 2023

Scorpio moulouya Ythier & Francois, 2023

Scorpio touili Ythier & Francois, 2023

See article for a complete list of species found in this study.

Abstract:
A study of the scorpions collected in around 110 locations in the Oriental region and surrounding areas in Morocco by the Emirates Center for Wildlife Propagation (ECWP, Missour, Morocco) during the last 22 years is presented. 11 species among four genera are recorded, including three new species belonging to the genus Scorpio Linnaeus, 1758 (Scorpionidae) which are described here based on material collected in the high plateaus of the Oriental region (Scorpio touili sp. n.), in the Beni Snassen mountains (Scorpio iznassen sp. n.) and in the middle Moulouya river basin (Scorpio moulouya sp. n.). These new taxa raise the number of known species for the genus Scorpio to 21, height of them occurring in Morocco. A total of 12 scorpion species are recognized to occur in the Oriental region in Morocco.

Reference:
Ythier E, Francois A. The scorpion fauna of the Oriental region in Morocco (Scorpiones: Buthidae, Scorpionidae) with description of three new species of the genus Scorpio Linnaeus, 1758. Faunitaxys. 2023;11(3):1-15. [Open Access]

Thanks to Eric for sending me this article!

Family Scorpionidae

A new species of Scorpio from North Africa

 

Manel Khammassi and co-workers have recently described a new species of Scorpio Linnaeus, 1758 (Scorpionidae) from Northwestern Algeria and Northeastern Morocco based on morphological and phylogenetic analysis.

Scorpio atlasensis Khammassi, Harris & Sadine, 2023

Abstract:
In this study, a new scorpion species, Scorpio atlasensis sp. n. from Northwestern Algeria and Northeastern Morocco is described. Morphologically, the new species can be distinguished by the general coloration, the pectinal plate shape and others features. We used partial sequences of the mitochondrial Cytochrome Oxidase I gene to confirm the distinctiveness of the new species. Phylogenetic relationships among specimens of Scorpio from Algeria and Morocco with additional comparative sequence data from GenBank were assessed. Our results indicate a high divergence between the clade of the new species and all other available species from the northwestern African region. Moreover, the phylogenetic analysis showed a deep split between a northwestern African

Reference:
Khammassi M, Harris DJ, Sadine SE, Bouhissi ME, Nouira S. Description of a new species of Scorpio (Scorpiones: Scorpionidae) from Northwestern Algeria using morphological and molecular data. Biologia. 2023:1-12. [Subscription required for full text]

Thanks to Dr. Sadine and Gerard Dupre for sending me this article!

Family Scorpionidae

A new species of Orthochirus from Iran

Shahrokh Navidpour and co-workers have published a new paper on the scorpion fauna of Iran and a new species of Orthochirus Karsch, 1891 (Buthidae) is described.

Orthochirus carinatus Navidpour, Kovarik, Soleglad & Fet, 2019

Abstract:
Nine species of scorpions belonging to two families are reported from the Alborz, Markazi and Tehran Provinces of Iran. Of these, Compsobuthus kaftani Kovařík, 2003 is recorded from Tehran Province for the first time; Compsobuthus matthiesseni (Birula, 1905) is recorded from Alborz Province for the first time; Hottentotta saulcyi (Simon, 1880) is recorded for Alborz and Markazi Provinces for the first time; Iranobuthus krali Kovařík, 1997 is recorded for Tehran Province for the first time; Mesobuthus eupeus eupeus (C. L. Koch, 1839) is recorded from Alborz, Markazi and Tehran Provinces for the first time; Odontobuthus doriae (Thorell, 1876) is recorded from Alborz Province for the first time; and Scorpio kruglovi Birula, 1910 is recorded for Alborz and Markazi Provinces for the first time. Orthochirus carinatus sp. n. from Iran (Alborz and Tehran Provinces) is described and fully complemented with color photos of preserved specimens, as well as of its habitat.

References:
Navidpour S, Kovarik F, Soleglad ME, Fet V. Scorpions of Iran (Arachnida, Scorpiones). Part X. Alborz, Markazi and Tehran Provinces with a Description of Orthochirus carinatus sp. n. (Buthidae). Euscorpius. 2019(276):1-20. [Open Access]

Familiy Buthidae

Species composition and distribution in an arid ecosystem i Algeria

Salah Eddine Sadine and co-workers recently published an article looking into the diversity and distribution of scorpions in the region of Ouargla (Eastern Algerian Sahara).

Abstract:
The present work is a study of composition and structure of scorpion fauna in the region of Ouargla (Eastern Algerian Sahara), during a period of fourteen years from 2005 to 2018, we sampled from different biotopes more than 1550 adult specimens, divided into nine 9 species of scorpions: Androctonus amoreuxi, Androctonus australis, Buthacus arenicola, Buthacus samiae, Buthiscus bicalcaratus, Buthus saharicus, Buthus tunetanus, Orthochirus innesi, and Scorpio punicus. A. australis was the most abundant species with 47.36% of the total individuals captured. Other species such as S. punicus, B. arenicola and A. amoreuxi are ranked as accidental with rates less than 20%. Among the important results in this work is reporting for the first time the presence of B. bicalcaratus in Ouargla and the new records of B. samiae and B. saharicus in this area. The Shannon’s index was H’ = 2.05 and the evenness index was 0.65, showing a very important diversity of scorpions with more than 23.5% of scorpion species reported in Algeria; however, a poor balance between the number of sampled species with dominance of the thermophilic species that are the most adapted scorpions in this arid climate.

Reference:
Sadine SE, Bissati S, Idder MA. Diversity and structure of scorpion fauna from arid ecosystem in Algerian Septentrional Sahara (2005-2018). Serket. 2018;16(2):51-9. [Open Access]

Thanks to Dr. Sadine for sending me his article!

A review of the scorpions (and other arachnid groups) from Sudan

The Republic of the Sudan is one of the largest countries in East Africa with a large diversity when it comes to habitats and climate. A few new scorpion taxa have been described from Sudan in the last years, but no recent review of the scorpion fauna has been published.

Jason Dunlop and co-workers have recently published a review of the scorpions and other arachnid groups from Sudan. 17 species from the families Buthidae (15) and Scorpionidae (2) were recorded.

Abstract:
Literature-based species lists for arachnids, excluding spiders and mites, found in the Republic of the Sudan are provided. We summarize records, references, and localities for 17 scorpions (Scorpiones), one harvestman (Opiliones), nine pseudoscorpions (Pseudoscorpiones), 21 camel spiders (Solifugae) and one whip spider (Amblypygi). There are no published records of palpigrades (Palpigradi), whip scorpions (Thelyphonida), schizomids (Schizomida) or ricinuleids (Ricinulei), although at least whip scorpions and ricinuleids would not be expected in East Africa based on their current distribution. Key literature for mites and ticks (Acari) is also mentioned. In general, the Sudanese arachnid fauna has not been documented in detail. Many more species, particularly among the harvestmen and pseudoscorpions, are to be expected, and we offer the data gathered here as a baseline for future work.

Reference:
Dunlop JA, Siyam M, Kovarik F. Smaller orders of Arachnida in Sudan: a literature review. Arachnology. 2018;17:449-57.

Thanks to Frantisek Kovarik for sending me their article!

Burrowing in two scorpion species from Iran

Babak Vazirianzadeh and co-workers have recently published a study of the habitat choice and burrowing behavior of the two scorpions Scorpio maurus Linnaeus, 1758 (Scorpionidae)  and Odonthubutus bidentatus (Lourenço & Pezier, 2002) (Buthidae) from Iran.

Abstract:
Background: The different features of scorpions can be successfully described by their nesting and burrowing behaviors. There is little information about burrowing activity of Iranian scorpions.
Methods: The current study was performed to compare the burrowing behavior between two burrowing Iranian scorpions, Scorpio maurus and Odonthubutus bidentatus by describing 30 nests of each species regarding collecting the scorpions.
Results: Scorpio maurus and O. bidentatus have a tendency to make nest with elliptical, round-like entrance and oval shape with arch at the top, respectively. There was not any significant difference between nest entrance properties of two scorpions. One-way ANOVA test showed that the height and diameter of two species nests were not significantly different. A Pearson correlation also showed a relative strong direct relationship between height and diameter of S. maurus nests than O. bidentatus. This correlation was not significant in the case of O. bidentatus. The results provided additional habitat information of scorpions.
Conclusion: The nests morphology characteristics of two Iranian scorpions including shape, depth, length and diameter depend are different from each other based on the following factors: species, soil texture, soil moisture and region conditions.

Reference:
Vazirianzadeh B, Jalali A, Chrom M, Mohammady A, Vatandoost H, Panahi F. A Comparative Study of Nesting Sites and Burrowing Habits of Two Iranian Burrowing Scorpions. Journal of Arthropod-Borne Diseases. 2017;11(1):78-85. [Open Access]

Similarities in scorpion burrows imply similar function

Amanda Adams and co-workers have recently published an analysis of the burrow structures of three scorpion species in the family Scorpionidae (Scorpio palmatus (Ehrenberg, 1829) from Israel and Opistophthalmus setifrons Lawrence, 1961 and O. wahlbergii Thorell, 1876 from Namibia).

The following similar architectural structures of burrows were found for all three species:

1. Just below the entrance, all species had a horizontal platform.

2. All three species had at least two bends of the vertical tunnel going down.

3. The burrows of all species ended in an enlarged terminal chamber (usually larger for female occupants).

The article concludes that the similarity of the burrow structure has a common goal of managing the scorpions physical environment (keeping temperature and humidity stable and optimal) and providing protection from predators and cannibalistic conspecifics.

This is an interesting and readable article for those of you interested in scorpion ecology and scorpions adaption to their environment.

Abstract:
Many animals reside in burrows that may serve as refuges from predators and adverse environmental conditions. Burrow design varies widely among and within taxa, and these structures are adaptive, fulfilling physiological (and other) functions. We examined the burrow architecture of three scorpion species of the family Scorpionidae: Scorpio palmatus from the Negev desert, Israel; Opistophthalmus setifrons, from the Central Highlands, Namibia; and Opistophthalmus wahlbergii from the Kalahari desert, Namibia. We hypothesized that burrow structure maintains temperature and soil moisture conditions optimal for the behavior and physiology of the scorpion. Casts of burrows, poured in situ with molten aluminum, were scanned in 3D to quantify burrow structure. Three architectural features were common to the burrows of all species: (1) a horizontal platform near the ground surface, long enough to accommodate the scorpion, located just below the entrance, 2–5 cm under the surface, which may provide a safe place where the scorpion can monitor the presence of potential prey, predators, and mates and where the scorpion warms up before foraging; (2) at least two bends that might deter incursion by predators andmay reduce convective ventilation, thereby maintaining relatively high humidity and low temperature; and (3) an enlarged terminal chamber to a depth at which temperatures are almost constant (±2–4 °C). These common features among the burrows of three different species suggest that they are important for regulating the physical environment of their inhabitants and that burrows are part of scorpions’ Bextended physiology^ (sensu Turner, Physiol Biochem Zool 74:798–822, 2000).

Reference:
Adams AM, Marais E, Turner JS, Prendini L, Pinshow B. Similar burrow architecture of three arid-zone scorpion species implies similar ecological function. The Science of Nature. 2016;103(7):1-11.[Subscription required for full text]

See also: Scorpions have similar tastes in burrow architecture

A new Scorpio species from southern Algeria

Wilson Lourenco and Andrea Rossi have recently described a new species of Scorpio Linnaeus, 1758 (Scorpionidae) from the Tassili N’Ajjer Mountains in South Algeria.

Scorpio tassili Lourenco & Rossi, 2016

Abstract:
In recent publications about the genus Scorpio Linnaeus, 1758, it was suggested that the population previously cited from the Tassili N’Ajjer Mountains in the South of Algeria, could represent a distinct species. Intensive investigation in the collections of the Natural History Museum in Paris, led to the location of the only known specimen collected by F. Bernard in 1949. The present study of this female specimen confirms its position as a new species of Scorpio and, curiously, shows that the Tassili N’Ajjer population seems to have more affinities with S. niger Lourenço & Cloudsley-Thompson, 2012 known from Niger than to S. punicus Fet, 2000, distributed in the high plateaus of Tunisia and North of Algeria. The new species is described here and, as in previous studied cases, the Saharan Massifs prove to be very important endemic centres within the Sahara desert.

Reference:
Lourenco WR, Rossi A. Confirmation of a new species of Scorpio Linnaeus, 1758 in the Tassili N’Ajjer Mountains, South Algeria (Scorpiones: Scorpionidae). Onychium. 2016;12:11-8.[Open Access]

Family Scorpionidae

A new study elevates several Scorpio maurus subspecies in Palestina and Israel to species status

Scorpio maurus Linneaus, 1758 (Scorpionidae) has been considered monotypic (one species) for almost a century, having at the most 19 recognized subspecies. In spite of a wide distribution in Africa and Asia and occurrence in different habitats, is has been very difficult to find taxonomical characteristics proving that Scorpio maurus in reality is a species complex with many hidden species. The opinion for many years has been that Scorpio maurus is a single, widespread, polymorphic species.

In 2009, Lourenco elevated several subspecies in North Africa to species status. Since them, other species have been described (Blog posts on Scorpio). Talal and co-workers have now published a very interesting study of the Scorpio maurus populations in Palestina and Israel, focusing especially on the two subspecies Scorpio maurus fuscus Ehrenberg, 1829 and Scorpio maurus palmatus Ehrenberg, 1829. The study revealed seven geographically-delimited clades of Scorpio maurus, corresponding to at least four currently recognized subspecies in their study area. Based on genetic, morphological and behavioral support, the authors elevate four subspecies to species status. The results presented support the theory that Scorpio maurus in reality is a species complex, comprising of multiple distinct phylogenetic, ecological and biological species.

Scorpio fuscus (Ehrenberg, 1829). Previously Scorpio maurus fuscus Ehrenberg, 1829.
Scorpio kruglovi (Ehrenberg, 1829). Previously Scorpio maurus kruglovi Ehrenberg, 1829.
Scorpio palmatus (Ehrenberg, 1829). Previously Scorpio maurus palmatus Ehrenberg, 1829.
Scorpio propinquus (Simon, 1872). Previously Scorpio maurus propinquus Simon, 1872.

 Check the article for information about the distribution of the new species.

Abstract:
Scorpio Linnaeus, 1758 (family Scorpionidae Latreille, 1802) was considered monotypic for over a century, and comprised a single species, Scorpio maurus Linnaeus, 1758, with 19 subspecies, distributed fromWest Africa, throughout the Maghreb and the Middle East, to Iran. Two parapatric subspecies, Scorpio maurus fuscus (Ehrenberg, 1829) and Scorpio maurus palmatus (Ehrenberg, 1828), have long been recognized in Israel.We examined morphological variation, burrow architecture and genetic divergence among 39 populations across the distribution of the two subspecies to assess whether they are conspecific and, if not, how many species might be involved. Cuticle coloration, pedipalp chela digital carina condition, and selectedmeasurements were recorded. Sixty burrows were excavated and examined for burrow structure and depth. A multilocus dataset comprising concatenated fragments of one nuclear (28S rDNA) and three mitochondrial (12S rDNA, 16S rDNA, Cytochrome c Oxidase Subunit I) loci, totaling ca. 2400 base-pairs, was produced for individuals, and a single-locus dataset comprising 658 base-pairs of the COI locus for 156 individuals. Despite overlapping ranges in morphometric characters of pedipalp chela shape, the putative subspecies were easily distinguished by cuticle coloration and condition of the pedipalp chela digital carina, and were also found to differ significantly in burrow architecture and depth. Phylogeographical analyses of the COI and multilocus datasets recovered seven distinct clades. Separate analyses of mitochondrial sequences, and combined analyses of mitochondrial and nuclear sequences support most clades. The two major clades corresponded with the geographical distributions of S. m. fuscus and S. m. palmatus in the region. Specimens from these clades were genetically distinct, and exhibited different burrow structure in geographically-proximate localities, suggesting reproductive isolation. The palmatus clade included two distinct subclades of specimens from localities adjacent to the Dead Sea. Three other clades, comprising specimens from the most northeastern localities, were tentatively assigned to subspecies previously recorded in neighboring Jordan and Syria. The morphological, behavioral and genetic evidence supports previous suggestions that Scorpio maurus is a species complex and justifies the following taxonomic emendations: Scorpio fuscus (Ehrenberg, 1829), stat. nov.; Scorpio kruglovi (Ehrenberg, 1829), stat. nov.; Scorpio palmatus (Ehrenberg, 1828), stat. nov.; Scorpio propinquus (Simon, 1872), stat. nov.

Reference:
Talal S, Tesler I, Sivan J, Ben-Shlomo R, Muhammad Tahir H, Prendini L, et al. Scorpion speciation in the Holy Land: Multilocus phylogeography corroborates diagnostic differences in morphology and burrowing behavior among Scorpio subspecies and justifies recognition as phylogenetic, ecological and biological species. Mol Phylogenet Evol. 2015 May 15.[Subscription required for full text]

Family Scorpionidae

Burrows and burrowing in Scorpio maurus - and how to capture them

Burrowing in Scorpio maurus and how to capture this scorpion is presented in a recent issue of the journal Euscorius.

Mehmet Colak and Aysegül Karatas have recently published an article on burrrowing and burrows in Scorpio maurus Linnaeus, 1758 (Scorpionidae) in Turkey. The authors also present a method on how to capture burrowing scorpions.

Abstract:
Shapes of burrows built by Scorpio maurus in southern and south-eastern Turkey were investigated. S. maurus were observed to build burrows with average 20 cm depth and 30 cm length. The burrows were concentrated in agricultural fields, farms, near gardens, and in areas with 5–10% slope. 116 specimens were captured, 77.5% from underground burrows, and 22.5% from their burrows under stones. A new method was tried in order to drive Scorpio maurus, an obligate digger type of scorpions, out of their burrows. Water was poured into a burrow, and the scorpion, which came out near the entrance of the burrow, was captured by placing a shovelful of soil 10 cm behind the entrance. Habitats of Scorpio maurus were observed, and shapes of underground burrows and burrows built under stones were documented.

Reference:
Colak M, Karatas A. Shape of Burrows Built by Scorpio maurus L., 1758 (Scorpiones: Scorpionidae) from Turkey, with Description of Capture Methods. Euscorpius. 2013 (171):1-7. [Free full text]

What do we mean when we talk about scorpion distribution?

Michael Warburg has recently published an article discussing what is actually meant by distribution. Does one mean geographical distribution or local distribution? Warburg introduces the terms mini-distribution, micro-distribution and macro-distribution and relates different distributional data from five species in northern Israel to these terms.

Abstract:
Scorpions being solitary animals are interesting in their distribution patterns. Nevertheless, the subject ofscorpion distribution has received relatively less attention than other ecological aspects of that group. It is amatter that changes continuously and moreover it is hard to define. Three different scales in distribution areintroduced here: (1) Mini- distribution which describes the presence of scorpions under a single shelter or in aburrow, within a single habitat, (2) micro-distribution describing the distribution within a single habitat, and (3) macro-distribution within different habitats. Most research in scorpion distribution concentrated on the first aspect the mini-distribution. The subject is reviewed in scorpions and discussed.

Reference:
Warburg MR. Scaling distribution in scorpions. Arthropods. 2013;2(1):7-19. [Free full text]

Thanks to Gerard Dupre for sending me this article!