Truncattus, Zhang, Jun-Xia & Maddison, Wayne P., 2012

Zhang, Jun-Xia & Maddison, Wayne P., 2012, New euophryine jumping spiders from the Dominican Republic and Puerto Rico (Araneae: Salticidae: Euophryinae), Zootaxa 3476, pp. 1-54 : 47-48

Genus Truncattus new genus

Type species: Truncattus flavus Zhang & Maddison , sp. nov.

Etymology. The generic name is from the combination of truncus (tree trunk, where the species is usually found) and - attus (a common ending for salticid genera); masculine in gender.

Diagnosis. Small tree trunk dwelling spiders. Chelicera has two promarginal teeth and one bicuspid retromarginal tooth. First tibia has three pairs of ventral macrosetae; first metatarsus has two pairs. Male chelicerae are not modified. Embolus is usually not very long but curved. Tegulum has an obvious proximal lobe, and palpal tibia has a ventral bump. Epigynum has a window with median septum. Some species have obvious secondary spermathecae in addition to the primary spermathecae. Genitalia organs are similar to those of Antillattus Bryant, 1943 and the Emathis species from Puerto Rico ( Petrunkevitch 1930). It differs from Antillattus by the nonmodified male chelicerae and endites; and from Puerto Rican species presently included in Emathis by the bicuspid retromarginal tooth on the chelicera (three or more cusps in Emathis species from Puerto Rico). This genus is also similar to Caribattus (see Peckham & Peckham 1901) in color pattern, but can be distinguished by the bicuspid retromarginal tooth ( Caribattus has one unident retromarginal tooth), and the presence of a proximal tegular lobe on the male palp (the tegular lobe is absent in Caribattus ).

Figures 238–242. Truncattus cachotensis sp. nov. 238 male paratype, dorsal view; 239 female paratype, dorsal view; 240 male left palp, ventral view; 241 epigynum, ventral view; 242 cleared epigynum, dorsal view. Scale bars: 238 – 239, 0.5 mm; 240 – 242, 0.1 mm.