Alloscorpiops (Alloscorpiops) troglodytes, Lourenco, Wilson R. & Pham, Dinh-Sac, 2015

Lourenco, Wilson R. & Pham, Dinh-Sac, 2015, A remarkable new species of Alloscorpiops Vachon, 1980 from a cave in Vietnam (Scorpiones, Euscorpiidae, Scorpiopinae), ZooKeys 500, pp. 73-82 : 74-76

Taxon classification Animalia Scorpiones Euscorpiidae

Alloscorpiops (Alloscorpiops) troglodytes sp. n. Figs 1-6, 7-13

Type materials.

Vietnam, Song Thanh Nature Reserve, Cha Vanh Commune, Nam Giang District, inside cave (Fig. 14), approximately 60 m from entry, 20/XII/1958 (B. Dejenböl). Male Holotype. Deposited in the Muséum national d’Histoire naturelle, Paris.

Etymology.

The specific name refers to the natural habitat where the new species was found.

Description.

The general coloration is yellow to pale yellow. Carapace and tergites yellow. Metasomal segments yellow to pale yellow; telson yellow; base of aculeus yellow and tip slightly reddish. Chelicerae yellow without spots; teeth slightly reddish. Pedipalps yellow; chela fingers slightly red. Legs pale yellow. Venter pale yellow; pectines totally pale, almost white.

Morphology. Carapace weakly granular, furrows moderately deep. Median eyes anterior to centre of carapace; three pairs of lateral eyes, the third pair only slightly smaller than the first two. Sternum pentagonal, longer than wide. Tergites weakly granulated, almost smooth; VII with four weakly marked carinae. Pectinal tooth count 9-9; fulcra absent. Sternites smooth and shiny; VII with four vestigial carinae and some punctations. Metasomal segment I wider than long; segment II as long as wide; segments III to V longer than wide; 10-8-8-8-7 carinae present on segments I to V, weakly marked; dorsal carinae on segments I–IV with a single, weakly marked posterior spinoid granule; metasomal tegument very weakly granulated almost smooth; ventral carina on segment V without spinoid granules. Telson vesicle totally smooth. Pedipalps: femur with dorsal internal, dorsal external, ventral internal and ventral external carinae moderately marked; tegument weakly granular. Patella with dorsal internal, ventral internal, dorsal external, ventral external and external carinae moderately marked; two/three inconspicuous spinoid granules present on internal aspect, the interno-ventral being slightly larger than the interno-dorsal granule; tegument weakly granular. Chela with dorsal marginal, external secondary, ventral internal and ventral carinae moderately to strongly marked; other carinae moderately to weakly marked; tegument granulated dorsally and ventrally. Chelal fingers with two longitudinal series of granules, almost fused, and a few inner accessory granules. Chelicerae dentition as in figure 2 ( Vachon 1963); five/six teeth on ventro-internal face of movable finger. Trichobothriotaxy type C, as in figures 7-13 ( Vachon 1974): see diagnosis.

Morphometric values (in mm) of male holotype. Total length (including telson) 20.9. Carapace: length 3.2; anterior width 2.1; posterior width 3.3. Mesosoma length 7.4. Metasomal segment I: length 0.9, width 1.2; II: length 1.1, width 1.1; III: length 1.2, width 1.0; IV: length 1.4, width 0.9; V: length 2.3, width 0.8, depth 0.7. Telson length 2.9. Vesicle: width 0.8, depth 0.8. Pedipalp: femur length 3.1, width 1.2; patella length 2.7, width 1.3; chela length 6.1, width 1.3, depth 1.2; movable finger length 3.1.