Rhyacophila tibetana (Martynov, 1930)

Lakhwinder, K. & Malkiat, S. Saini, 2015, A New Species Of The Genus Himalopsyche (Trichoptera, Rhyacophilidae), With Keys To And Catalogue Of Indian Species, Vestnik Zoologii 49 (1), pp. 3-12 : 7

H. tibetana group

This group possesses characters such as inferior appendages each biarticulated, anterior claws of male asymmetrical, segment X small, preanal appendages large and free, anal sclerite small and maxillary palps slender.

Key to Indian subgroups of the H. tibetana group

This group is divisible into three subgroups which can be easily set aside from one another on the basis of some features of the genitaliic attributes.

1. Males. .................................................................................................................................................................... 2

— Females. ................................................................................................................................................................ 4

2. Preanal appendages slender. ............................................................................................................................. 3

— Preanal appendages oval. ................................................................................................... H. navasi subgroup

3. Inferior appendages 2-segmented, basal segment long and broad at base, constricted to slender about midway, terminal segment short. .................................................................................. H. tibetana subgroup

— Basal segment and terminal segment of inferior appendage almost of same breadth and basal segment not constricted. ............................................................................................................... H. anomala subgroup

4. Sternite VIII with ventral lobe. ......................................................................................................................... 5

— Sternite VIII without ventral lobe. ................................................................................... H. navasi subgroup

5. Sternite VIII with short ventral lobe; long setae absent. ............................................ H. tibetana subgroup

— Sternite VIII with long ventral lobe; long setae present. ........................................... H. anomala subgroup