Sunday, March 31, 2024

[Arachnida • 2024] Scorpiops (Euscorpiops) krachan • A New Species of the Genus Scorpiops Peters, 1861 (Scorpiones: Scorpiopidae) from Thailand


Scorpiops (Euscorpiopskrachan 

Nawanetiwong, Košulič, Warrit, Lourenço & Ythier, 2024

Abstract
A new speciesScorpiops (Euscorpiopskrachan sp. nov., belonging to the family Scorpiopidae Kraepelin, 1905 is described based on three adult males and one adult female collected in the Kaeng Krachan National Park, Phetchaburi Province, Thailand. The new species presents most features exhibited by scorpions of the subgenus Euscorpiops and can be characterized notably by a very small size, a sexual dimorphism strongly marked with male pedipalps elongated, a distinct trichobothrial pattern and other morphological features. This new taxon may represent one endemic element for the scorpion fauna of Thailand. Aspects of the ecology and distribution of the new species are discussed and compared with that of other relative Scorpiops species.

Key words: Description, Kaeng Krachan National Park, morphology, scorpion, Southeast Asia, wet forest

Scorpiops (Euscorpiopskrachan sp. nov.
 A, B male holotype, habitus, dorsal A and ventral B aspects C, D female paratype, habitus, dorsal C and ventral D aspects. Scale bar 1 cm.

Family Scorpiopidae Kraepelin, 1905

Genus Scorpiops Peters, 1861
Subgenus Euscorpiops Vachon, 1980

 Scorpiops (Euscorpiops) krachan Nawanetiwong, Košulič, Warrit, Lourenço & Ythier, sp. nov.

Diagnosis: The new species exhibits the general characteristics of the subgenus Euscorpiops (Vachon 1980; Soleglad and Sissom 2001). Total length of male and female 21.7–26.9 and 25.9 mm, respectively, defining the new species as very small in comparison to most other species of the subgenus. General coloration brownish yellow; female darker than male; chelicerae yellow without any variegated spots. Pectines with 6–7 and 5–5 teeth in male and female, respectively; two marginal and two middle lamellae present; fulcra present. Sexual dimorphism strongly marked, with male pedipalps markedly elongated; chela length/width ratio ...

Etymology: The specific name refers to the National Park of Kaeng Krachan where the new species was collected.

Scorpiops (Euscorpiopskrachan sp. nov., alive with pre-juveniles (instar I).


Wasin Nawanetiwong, Ondřej Košulič, Natapot Warrit, Wilson R. Lourenço and Eric Ythier. 2024. A New Species of the Genus Scorpiops Peters, 1861, Subgenus Euscorpiops Vachon, 1980 from Thailand (Scorpiones, Scorpiopidae). ZooKeys. 1193: 161-170. DOI: 10.3897/zookeys.1193.113398