AnimaliaScorpionesEuscorpiidaeLourençoWilson R.PhamDinh-SacA remarkable new species of Alloscorpiops Vachon, 1980 from a cave in Vietnam (Scorpiones, Euscorpiidae, Scorpiopinae)Zookeys27420152015500738210.3897/zookeys.500.9421 Alloscorpiops Vachon, 1980Diagnosis of the new species.

The new species shows several of the characteristics already defined for the genus Alloscorpiops (Vachon 1980; Soleglad and Sissom 2001). It presents, however, a small size relative to other species of the genus, male 20.9 mm in total length and a very pale yellow coloration. The new species is characterized by the trichobothrial patterns of some ‘territories’ or series. Femur with three trichobothria: dorsal, internal and external. Patella with two dorsal, one internal, 14 ventral and only 21 external trichobothria. Chela-hand with an unusual number of 9 ventral trichobothria, two dorsal (Dt, Db), two internal (ib, it), Est, five Et, Esb and three trichobothria in the Eb series. The annular ring is very weakly marked. Pectines with 9-9 teeth and absence of fulcra.

VachonM (1980) Essai d’une classification sous-générique des Scorpions du genre Scorpiops Peters, 1861 (Arachnida, Scorpionida, Vaejovidae).Bulletin du Muséum national d’Histoire naturelle, Paris (4e sér.) 2: 143160.SolegladMESissomWD (2001) Phylogeny of the family Euscorpiidae Laurie, 1896 (Scorpiones): a major revision. In: FetVSeldenPA (Eds) Scorpions 2001. In memoriam Gary A. Polis. British Arachnological Society, Burnham Beeches, Bucks, 25111.