Potamyia renatae Malicky 1997

Pandher, Manpreet Singh, Kaur, Simarjit & Parey, Sajad Hussain, 2025, New records of Hydropsychinae (Insecta: Trichoptera: Hydropsychidae) from Assam, India, Zootaxa 5594 (2), pp. 377-386 : 381-383

Potamyia renatae Malicky 1997 , NEW RECORD for India

( Figs 7–11 )

Potamyia renatae Malicky 1997 , 29 (2): 1037;

male redescribed in the Potamyia flava Group ( Oláh et al. 2006).

Material examined. India: Assam; Baksa, Manas National Park , 26°39’35.61” N, 91° 0’9.21” E, 176 m, 14.x.2022, 1male, Pandher, ( HARC, ZSI Solan) .

Diagnosis. In the general shape and structure, the male genitalia of P. renatae are similar to those of Potamyia aureipennis Ulmer 1930 (reported from Sumatra), and Potamyia baenzigeri Malicky & Chantaramongkol 1997 (in Malicky 1997, reported from Thailand). In lateral view ( Fig. 7 ) segment IX of P. renatae is similar to that of P. aureipennis but its anterolateral margin is relatively convex in P. aureipennis whereas in P. renatae the anterolateral margin is almost straight. Further, in dorsal view ( Fig. 8 ) P. renatae somewhat resembles P. baenzigeri . However, in dorsal view ( Fig. 8 ) the body of tergum X in P. renatae is bilobed and hooked apicomesad, the mesal lobe is reduced, and the dorsal interlobular gap is roughly U-shaped and very wide; whereas in P. baenzigeri the body of tergum X is bilobed, apically round, with its mesal lobes well defined by setose areas, and the dorsal interlobular gap is V-shaped and very narrow.

Redescription. Overall color in alcohol pale yellow, maxillary and labial palps pale. Head yellowish, antennae long, pale, legs pale yellow. Body covered with scattered light pubescence. Wings pale, membranes faintly brown, with pale maculation and reticulate pattern. Length from tip of head to apices of folded forewings about 7.25 mm. Length of each forewing 6.25 mm. Length of each hind wing 5.00 mm.

Male genitalia ( Figs 7–11 ). In lateral view ( Fig. 7 ) abdominal segment IX longitudinally short; anterolaterally slightly sinuous, almost straight; apical lobe on each posterolateral margin small, triangular. Setal row on each posterior margin of segment IX almost complete, non-intermittent, with short gaps; setal lengths heterogenous; setae on posterolateral protuberances of dorsum about 2 times as long as setae on posterior margin of segment IX; setae on apical lobes stiff, very dense. In lateral view intersegmental step between segments IX and X deep, partly occupied by pair of setose protuberances, appearing as setose laterocaudal lobes. In lateral view ( Fig. 7 ), body of tergum X broad basally, directed posterad and apically slightly pointed, directed posterodorsad; in dorsal view ( Fig. 8 ) bilobed, apically hooked mesad; mesal lobes reduced; dorsal interlobular gap roughly U-shaped, very wide. Setose areas present on basal dorsolateral areas of tergum X. In lateral view ( Fig. 7 ), inferior appendages each long, basal segment broadly dilated, apical segment curved dorsad; in ventral view ( Fig. 9 ) basal segment almost straight; apical segment broad basally, tapering towards apex, hooked mesad, outer margin finely toothed. Phallic apparatus complex, broad basally; constricted in middle, apically broad in lateral and ventral views ( Figs 10, 11 ); in ventral view with two large, sclerites apically.

Distribution. India (Assam), Nepal.

Figures

FIGURES 7–11. Potamyia renatae Malicky 1997, male genitalia. 7, left lateral; 8, dorsal; 9, right inferior appendage, ventral; 10, phallus, left lateral; 11, phallus ventral.