Cheumatopsyche guadunica Li & Dudgeon 1988

Pandher, Manpreet Singh, Malicky, Hans & Parey, Sajad H., 2018, New species of the genus Cheumatopsyche Wallengren 1891 (Insecta: Trichoptera: Hydropsychidae) from Indian Himalaya, Zootaxa 4379 (3), pp. 407-420 : 410-412

Cheumatopsyche guadunica Li & Dudgeon 1988 (New Record for India)

( Figs. 9–13 )

Cheumatopsyche guadunica Li &Dudgeon 1988 , 43, 45, figs. 16–20; holotype male, Guadun, Wuyishan, Fujian Province, People’s Republic of China , deposited in the Department of Plant Protection [ Department of Entomology ], Nanjing Agricultural University , Nanjing , Jiangsu Province, People’s Republic of China .

Material examined. 2 Males, India: Sikkim; Chungthang , 2200 m, 15-ix-2009, Pandher & Parey ( NPC) ; 3 males; Uttarakhand; Pourola , 1500 m, 28-ix-2008, Pandher & Parey (ZSI).

Diagnosis. The male genitalia of the Cheumatopsyche guadunica Li & Dudgeon1988 are similar to those of Cheumatopsyche ceres Malicky & Chantaramongkol 1997 and Ch. carna Malicky & Chantaramongkol 1997 (both in Malicky 1997), both reported from Thailand. Cheumatopsyche guadunica resembles Ch. carna in the lateral view of the male genitalia (similar shapes of segment X and the harpago (apical segment) of each inferior appendage), but the apicoventral setal lobes are bean-shaped in dorsal view and the smooth mesocaudal lobe of segment X is nearly straight in Ch. guadunica whereas the apicoventral setal lobes of segment X are elliptical in dorsal view in both Ch. ceres and Ch. carna (and transverse in Ch. carna ) and the apical margin of the smooth caudal lobe of segment X is strongly projecting and bifid in Ch. carna , supporting the hypothesis that Ch. guadunica is a distinct species.

Description. Adult male; color in alcohol light brown, wings hyaline and yellow, legs and maxillary palps pale yellow. Length from tip of head to apices of folded forewings about 7.90 mm; maxillary palps elongate, each 2.25 mm long, segment II slightly longer than III; labial palps each 1 mm long. Length of each forewing 6.50 mm; venation typical for genus; veins m-cu and cu close together, Sc and R separately join wing margin, Cu and 1A separate before posterior margin of wing. Hind wings each 5 mm long; Sc and R meeting at crossvein r by distance equal to length of crossvein itself; crossvein r tangential to crossvein s; fork I absent.

Male genitalia ( Figs. 9–13 ). Abdominal segment IX on each side in lateral view convex anterolaterally, longitudinally long, posterolateral margin with apicolateral lobe not prominent, its posterior spine row aligned in continuity with setae on posterolateral slope of keel; median keel not marked, visible at edges only, with long setae, apex quadrate and anterior margin concave in dorsal view. Pair of lateral setose areas (preanal appendages) very small, scarcely discernible as small lateral lobes. Intersegmental depression between segments IX and X semicircular in lateral view. Segment X long, with rounded apex in lateral view; in dorsal view quadrate with rounded apicoventral setal lobes forming pair of digitiform processes, directed posterodorsad in lateral view; digitate and curved mesad in dorsal view. Dorsal interlobular gap broad, demarcated by apicoventral digitiform processes laterally and smooth mesocaudal lobe anteriorly. Inferior appendages each 2-segmented, coxopodite (basal segment) long, slender, straight, apically thicker in lateral view; in ventral view curved mesad; harpago (apical segment) small, broad, basally 2-lobed, mesal lobe small and triangular, dorsal lobe longer than mesal lobe and pointed apically. Phallic apparatus with basal part curving caudad distally, right angled; posterior part of horizontal phallotheca constricted, ending distally in pair of regularly circular, sclerous endothecal processes; median rim thickened, incurved ventrally; pair of small, irregular phallotremal sclerites located in middle position beneath sclerous endothecal processes; endophallus visible in ventral view, ending posteriorly in narrow, ventral tube with gonopore; broad ovoid ventral keel dominating apex of phallotheca in lateral view.

Distribution. India: Sikkim. China.

Figures

FIGURES 9–13. Ch. guadunica Li & Dudgeon 1988, male genitalia. 9, left lateral; 10, dorsal; 11, right inferior appendage, ventral; 12, phallus, lateral; 13, phallus, ventral.