Cheumatopsyche similis, Pandher & Malicky & Parey, 2018

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 : 413-415

Cheumatopsyche similis sp. nov.

( Figs. 19–23 )

Material examined. Holotype: male, India: Uttarakhand; Karanparyag , 900 m, 20-vi-2008 Pandher & Parey ( NPC).

Paratypes. 1 male, collection data same as of holotype. Uttarakhand, Diwalighal , 1200 m, 10-vi-2009, 2 males, Pandher & Parey ( NPC) ; Mori , 1600 m, 29-ix-2008, 2 males, 3 females, Pandher & Parey ( NPC) .

Diagnosis. The male genitalia of Ch. similis sp. nov. are very similar to those of Ch. bhatrapura Malicky 1979 , reported from the Andaman Islands. As per observation of the junior author, Ch. bhatrapura is very common in the Andamans and he has not seen any specimen from other regions similar to Ch. bhatrapura . However, in Ch. similis (1) the posterolateral margin of segment IX is smooth and without any projection in lateral view and there is a well-developed rounded setal area in dorsal view (the posterolateral margin of segment IX is produced in the form of an apical lobe in the ventral half and the setal area is not well developed in Ch. bhatrapura ); (2) the apicoventral setal lobes (lateral arms) of segment X are straight and tapering to acute apices in dorsal view (the apicoventral setal lobes are distally curved mesad and blunt apically in dorsal view in Ch. bhatrapura ); (3) hindwing fork I is absent, (fork I is present in Ch. bhatarapura ); and (4) no colour pattern of wings was observed (the wings of Ch. bhatrapura have a colour pattern).

Description. Adult male; color in alcohol brown, antennae and maxillary palps pale yellow, dorsum of head dark brown, wings hyaline, light brown. Body covered with short, scattered yellowish pubescence. Length from tip of head to apices of folded forewings about 6.25 mm; maxillary palps each 2.75 mm long, segment II longer than III; V as long as first 4 segments together; labial palps each 1 mm long; antennae about 7 mm, longer than forewings (about 6 mm); venation typical for genus; forewing crossveins m-cu and cu almost tangential in oblique line; Cu and 1A running separately before wing margin. Hind wings each 4.25 mm long; Sc and R meeting at crossvein r; fork I absent.

Male genitalia ( Figs. 19–23 ). Abdominal segment IX annular; dorsal region half as long as ventral region; anterolateral margins of segment IX regularly convex; dorsally sinuate in lateral aspect. Apical lobe quadrate on distal lateral margin in lateral view. Spine row on posterior margin of segment IX long and regular. Intersegmental depression between segments IX and X absent. Segment X small, quadrangular in lateral view; triangular in dorsal view except for prominent lateral setose areas and apicoventral setal lobes; dorsal interlobular gap wide, partially filled by triangular, smooth mesocaudal lobe; pair of apicoventral setal lobes short, parallel-sided, curving dorsad and blunt in lateral view, straight in dorsal view with tapering and acute apices; pair of lateral setal areas (superior or preanal appendages) compact, elevated, located at mid length. Inferior appendages each much longer than segment X, coxopodite (basal segments) each slightly dilated preapically, curving mesad in ventral view; harpago (apical segment) small, broad at base, tapering towards pointed apex. Phallus with phallotheca slightly depressed and weakly developed anteriorly, angled caudad distally, with horizontal section slightly concave dorsally, ventral margin straight; endophallus long, running through entire phallotheca, ending in narrow tube at gonopore; pair of sclerotized endothecal processes ovoid, curving ventrad; phallotremal sclerites vertical in lateral view; vestigial, membranous, ventral endothecal lobes weakly visible.

Distribution. India: Uttarakhand

Etymology. The name ‘ similis ’ is based on the similarity of the male genitalia of this species with those of Ch. bhatrapura Malicky 1979 .

Figures

FIGURES 19–23. Ch. similis sp. nov., male genitalia. 19, left lateral; 20, dorsal; 21, right inferior appendage, ventral; 22, phallus, lateral; 23, phallus, ventral.