Morphology, ecology & distribution of Isomterus maculatus in Cuba

Rolando Teruel has written a paper on morphology, ecology & distribution of the introduced scorpion Isometrus maculatus (Buthidae) in Cuba.

Abstract:
The taxonomy and known geographical distribution of the Cuban populations of Isometrus maculatus (DeGeer, 1778) are updated. Also, the morphological variability (body size and proportions, coloration, number of pectinal teeth and primary rows of granules on pedipalp fingers) are herein studied and data are presented

Reference:
Teruel R. Morfologia ecologia y distribucion de Isometrus maculatus (DeGeer, 1778) en Cuba (Scorpiones: Buthidae). Boletin Sociedad Entomológica Aragonesa. 2009(45):173-9.

Thanks to Rolando for sending me the paper!

Family Buthidae

New Diplocentrus from Guatemala

Luise de Armas & Rony Trujillo have recently described a new Diplocentrus (Scorpionidae) from Guatemala:

Diplocentrus motagua Armas & Trujillo, 2009

Abstract:
Both sexes of a new species of the scorpion genus Diplocentrus Peters, 1861 (Scorpionidae: Diplocentrinae) is described from Zacapa Department, northeastern Guatemala. It is characterized by punctuation on the whole body, including appendages, a peculiarity shared with Diplocentrus melici Armas & Martín-Frías, 2004, from Veracruz state, Mexico, but it is smaller and has a lower pectinal tooth count, as well as a different tarsal ventral spine formula. A dichotomic key is provided for identification of the three Guatemalan species of the genus Diplocentrus.

Reference:
de Armas LF, Trujillo RE. Nueva especie de Diplocentrus Peters, 1861 (Scorpiones: Scorpionidae) de Guatemala. Boletin Sociedad Entomológica Aragonesa. 2009(45):67-72.

Thanks to Rony Trujillo for sending me this paper!

Family Scorpionidae

Two new Hemiscorpius species from Oman

The scorpion fauna of the Arabian Peninsula has still a lot of secrets. Graeme Low has collected scorpions in northern Oman and has now described two new species of Hemiscorpius (Hemiscorpiidae):

Hemiscorpius falcifer Lowe, 2010
Hemiscorpius flagelliraptor Lowe, 2010

Both species are ultralithophiles (adapted for life in cracks and crevices of rock surfaces).

The paper has a identification key for Hemiscorpius (females only).

Abstract:
Two new species of Hemiscorpius, H. falcifer, sp. nov. and H. flagelliraptor, sp. nov., are described from the Al Hajar Mountains of northern Oman. Although both are lithophilic or ultralithophilic scorpions beautifully adapted for living in rock crevices, they exhibit divergent morphologies and may not be closely related. H. falcifer is distinguished by: smaller size, relatively short compact metasoma, bulbous telson, relatively distal placement of lamellar double hook of hemispermatophore, pedipalp chela with wide, sub-triangular manus and exceptionally elongated fingers with single file dentition along distal half of movable finger (in adults); H. flagelliraptor is distinguished by: extremely elongated, sexually dimorphic metasoma, slender telson, proximal placement of lamellar double hook of hemispermatophore, slender pedipalp chela with double denticle rows along the distal half of movable finger. Although orthobothriotaxic, in other respects H. flagelliraptor appears most similar to the neobothriotaxic species H. enischnochela Monod et Lourenço, 2005 and H. gaillardi (Vachon, 1974) from Iran.

Reference:
Lowe G. Two new Hemiscorpius Peters, 1861 (Scorpiones: Hemiscorpiidae) from northern Oman. Euscorpius. 2010(91):1-24. [Free fultext]

Family Hemiscorpiidae

New Tityus from Puerto Rico

Rolando Teruel & Alejandro Sanchez have recently described a new Tityus species (Buthidae) from Puerto Rico:

Tityus riverai Teruel & Sanchez, 2009

Abstract:
A new species of the genus Tityus C. L. Koch 1836 is described, from a single locality on the north-eastern coast of Puerto Rico. The new species is the second member of the "crassimanus" group discovered on this island, and morphologically constitutes a peculiar case, because it is more closely related to the type-species of this group, Tityus crassimanus (Thorell 1876) (endemic to south-western Hispaniola), than to the only other previously known member from Puerto Rico, Tityus michelii Armas 1982.

Reference:
Teruel R, Sanchez AJ. Una nueva especie de Tityus del grupo "crassimanus" (Scorpiones: Buthidae) de Puerto Rico. Boletin Sociedad Entomológica Aragonesa. 2009(45):329-33.

Thanks to Rolando for sending me the paper!

Family Buthidae

New info on the status Orthochirus krishnai

Zambre & Bastawade have been able to describe the male of Orthochirus krishnai Tikader & Bastawade, 1983, which was previously known only from two female specimens. O. krishnai was considered Nomen dubium by Kovarik (2004), but the authors of the present paper concludes that O krishnai is a valid species.

Abstract:
No abstract in the article.

Reference:
Zambre AM, Bastawade DB. Description of male Orthochirus krishnai (Scorpiones: Buthidae) from India, with comments on its taxonomic status. Journal of Threatened Taxa. 2009;1(12):621-3. [Free fulltext]

Thanks to Gerard Dupre for sending me this paper!

Family Buthidae

A review on Hemiscorpius envenomations

All dangerous scorpions belongs to the family Buthidae with the important exception of Hemiscorpius lepturus (and possible other species in the genus Hemiscorpius), which belongs to Hemiscorpiidae.

Jalali & co-workers have now published a very interesting review on Hemiscorpius lepturus envenomations in Iran. Data suggest that Hemiscorpius lepturus is actually the most dangerous scorpion in the country, especially to children.

One of the interesting (and dangerous) characteristics of Hemiscorpius envenomations is the lack of pain after a sting and a delayed onset of dangerous symptoms, characteristics that are oposite in other dangerous scorpions (buthids). Symptoms are also different with renal, skin (necrosis) and blood abnormalities not typical for buthid envenomations, indicating a different mix of toxins in Hemiscorpius compared to other scorpions.

Anti-venom for Hemiscorpius is available in Iran and is used with benficial effects.

Abstract:
Many of the published accounts of envenomation by Hemiscorpius lepturus (H. lepturus) are in a form that makes it difficult for non Farsi readers to access. The purpose of this review is to summarise the Iranian literature on the toxinological effects of the venom of H. lepturus using both in vivo and in vitro data and where appropriate, details of methods and ethics statements will be reported.

Reference:
Jalali A, Pipelzadeh MH, Sayedian R, Rowan EG. A review of epidemiological, clinical and in vitro physiological studies of envenomation by the scorpion Hemiscorpius lepturus (Hemiscorpiidae) in Iran. Toxicon. 2010;55(2-3):173-9. [Subscription required for fulltext]

Family Hemiscorpiidae

The genus Chaerilus in China

Happy New Year!

Zhi-Youn Di & Co-workers have recently published a paper discussing the genus Chaerilus (Chaerilidae) in China. The paper also provide a detailed description of the female of Chaerilus tricostatus Pocock, 1899 for the first time.

Abstract:
A list, a key and distributions of the seven Chinese species of the genus Chaerilus Simon, 1877 are provided. The female C. tricostatus Pocock, 1899 collected from Xizang is described and figured for the first time.

Reference:
Di Z-Y, Wu Y-L, Cao Z-J, Fan L-Q, Li W-X. The genus Chaerilus Simon, 1877 (Scorpiones: Chaerilidae) in China, with a description of the female C. tricostatus Pocock, 1899. Arthropoda Selecta. 2009;18(3-4):131-8.

Thanks to Gerard Dupre for informing me about this paper!

Family Chaerilidae