Nilgirius Roewer, 1915

Zhao, Jingjing, Cheng, Zien & Zhang, Chao, 2023, Description of Nilgirius pygoprominulus sp. n. (Opiliones, Assamiidae, Trionyxellinae) from China, with notes on its sexual dimorphism, Biodiversity Data Journal 11, pp. 102954-102954 : 102954

Nilgirius Roewer, 1915

Nilgirius scaber Roewer, 1915 - type species

Diagnosis

Medium-sized assamiids (3.00-5.00) with the spine on the interocular mound. Carapace, scutal areas and tergites unarmed, except for some acuminate tubercles. Basichelicerite of chelicerae armed with tubercles. Pedipalpal femur distally with one setiferous tubercle on medial side. Femora of legs III-IV slightly curved and tarsi III-IV each with a pseudonychium and two simple claws. Coxa IV extremely enlarged in male and the distance from genital operculum to the distal coxa IV is about twice the distance from genital operculum to anterior margin of coxa I. Distitarsus I two-jointed. Distitarsus II three-jointed, rarely four-jointed. Tarsal formula (I-IV): 5(2)/9-11(3)/6-7(3)/7(3). Spiracles concealed.

Distribution

China (Baoshan City), India (Nilgiris Hills, Kodaikanal, Vandaravu, Mariyanshola Forest, Kukkal, Coorg).

Included species (two species)

Nilgirius scaber Roewer, 1915 and Nilgirius pygoprominulus sp. n.

Notes

Only one species was included in the genus before the description of this new species.