Hydropsyche orectis Mey, 1999

Garima, Deepti, Kaur, Simarjit & Pandher, Manpreet Singh, 2020, Short Communication New records of the genus Hydropsyche Pictet, 1834 (Trichoptera: Hydropsychidae) from Arunachal Pradesh, India, Records of the Zoological Survey of India 120 (4), pp. 495-498 : 497-498

Hydropsyche orectis Mey, 1999 (Figures 6-10)

1999. Hydropsyche orectis Mey, Proc. 9th Inter. Symp. Trichop.: 730

Material examined: India: Arunachal Pradesh; Ramsing , 28°10’22.8’’ N 94°9’27’’ E, 29.x.2017, M.S. Pandher, 3 ♂ (NZC- 7976/H13) .

Diagnosis: This species is similar to Hydropsyche renschi Mey, 1999 and Hydropsyche kalliesi Mey, 1999 . In all these species, the apical lobe of IX segment of male genitalia is of triangular shape. Also there is a dorsal depression between the IX and the X segments. X tergum is broader with a pointed hump and have narrower (finger like)

Figures 6-10. Male genitalia of Hydropsyche orectis Mey, 1999 . 6. Lateral view; 7. Dorsal view; 8. Inferior appendage, Ventral view; 9. Phallus, Lateral view; 10. Phallus, Ventral view.

tapering end (apicoventral setose lobes of tergum X) directed posteroventrad. The inferior appendages are slender and upwardly directed. These are less curved in H. orectis and H. renschi while in H. kalliesi the inferior appendages are curved more at the terminal end. The phallus in ventral view has swollen apex laterally with a depression in the middle. The endothecal membrane extends over the lateral sides of the apical phallus and is without endothecal processes in H. orectis and H. renschi . But in case of H. kalliesi the endothecal membrane has a pair of small endothecal processes.

Distribution: China, Myanmar, Nepal, India (Arunachal Pradesh, Sikkim, Jammu & Kashmir).