Chimarra sikkimensis Pandher & Saini, 2012

Pandher, Manpreet Singh, 2020, Genus Chimarra Stephens, 1829 (Insecta: Trichoptera: Philopotamidae) from Suntalekhola Biodiversity Camp, Neora Valley, National Park, West Bengal, Records of the Zoological Survey of India 120 (2), pp. 113-122 : 114

1. Chimarra sikkimensis Pandher & Saini, 2012 ( Figs. 1-5 )

2012. Chimarra sikkimensis Pandher & Saini, Zootaxa , 3478: 320.

Material examined: India: West Bengal; Neora valley National Park, Suntalekhola Biodiversity Camp (W.B), 700 m, 27°00.789’N, 88°47.094’E, 27-ix-2018, 3♂♂, Pathania, P.C. & Pandher, M.S. ( ZSI) .

Diagnosis: The male genitalia appendages of C. sikkimensis are similar to the following species reported from Thailand viz. Chimarra rama Malicky & Chantaramongkol 1993b , C. devva Malicky & Chantaramongkol 1993b , C. shiva Malicky & Chantaramongkol 1993b , C. atara Malicky & Chantaramongkol 1993b , and C. momma Malicky & Chantaramongkol 1993b . In lateral view, segment IX is produced anteroventrally in all these species. Besides this, in the outline, the lateral lobes of tergum X of C. sikkimensis and C. rama are alike in lateral view but the inferior appendages differs characteristically (which are wide and apically quadrate in C. sikkimensis but slender and apically sharp in C. rama ) as well as pin-head-like (apically) mesal lobe of tergum X in C. sikkimensis , but curved posterad in C. rama . The phallic apparatus of C. sikkimensis in ventral view bears two sickle-shaped apical endothecal spines and in lateral view 4 asymmetrical spines, while in C. rama . Only 2 asymmetrical endothecal spines are visible. This species was earlier described from Sikkim and as well as reported from Uttarakhand ( Pandher & Saini, 2012) and its recent collection from the state of West Bengal suggests its further distribution in the Himalayan belt.

Distribution: India: Sikkim, West Bengal and Uttarakhand.

Figures

Plate 1. Figures 1-10. Chimarra spp. Male genitalia. 1-5. Chimarra sikkimensis. 1. Lateral view, 2. Dorsal view, 3. Inferior appendage Ventral view, 4. Phallic apparatus lateral view, 5. Phallic apparatus ventral view. 6-10. C. rifati.