Hydropsyche atlas Malicky & Chantaramongkol, 2000

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 : 496-497

Hydropsyche atlas Malicky & Chantaramongkol, 2000 ( Figures 1-5 )

2000. Hydropsyche atlas Malicky & Chantaramongkol, Linz. Biol. Beitr. , 32 (2): 818.

Material examined: India: Arunachal Pradesh; Ramsing , 28 ° 10’ 22.8’’ N 94 ° 9’ 27’’ E, 29.x.2017, M.S. Pandher, 1 ♂ (NZC-7477/H13) .

Diagnosis: This species is very similar to Hydropsyche athamas Malicky & Chantaramongkol, 2000 . There is a deep dorsal depression between the IX and the X segment in both these species. X tergum of male genitalia has a large pointed hump in both H. atlas and H. athamas . But in H. atlas the apex of X tergum (apicoventral setose lobes) has blunt projection curved downwards while in H. athamas the projection is pointed and curved downwards. Inferior appendages have very thin terminal end with a basal lobe. The phallus has 3 pairs of large and 3 pairs of small spines in case of H. atlas . The largest spine is straight and pointed and directed dorsally. But in case of H. athamas , the phallus has four pairs of spines of which the largest spine at the end is directed downwards in ventral view.

Distribution: Pakistan, Nepal, Bhutan, India (Arunachal Pradesh; Himachal Pradesh).

Figures

Figures 1-5. Male genitalia of Hydropsyche atlas Malicky & Chantaramongkol, 2000. 1. Lateral view; 2. Dorsal view; 3. Inferior appendage, Ventral view; 4. Phallus, Ventral view; 5. Phallus, Lateral view.