Chimarra aliceae, Cartwright, 2020

Cartwright, David, 2020, A review of the New Guinea species of Chimarra Stephens (Trichoptera: Philopotamidae), Memoirs of Museum Victoria 79, pp. 1-49 : 38-40

Chimarra aliceae sp. nov.

Figures 126–128

Holotype. Male (in alcohol, figured specimen CT-337), PNG, Central Province , soak on Bulola side range on Bulola-Aseki Rd, about 7° 17' S, 146° 30' E, 5 June 1986, A. Wells ( NMV, T-22467).

Diagnosis. The male of C. aliceae can be separated from all other New Guinea species by the combination of the strongly downturned, hook-like lateral lobes of segment X and the short, sub-semicircular inferior appendages in lateral view.

Description. General body colour and wings pale (faded). Wings similar to those of C. ukarumpana (fig. 7). Length of forewing: male 4.3 mm. Forewing with forks 1, 2, 3 and 5 present, Rs slightly sinuous or curved, not thickened, basad of discoidal cell; hind wing with fork 1 apparently absent, forks 2, 3 and 5 present.

Male. Segment IX anterior margin in lateral view, anteroventrally rounded (fig. 126), ventral process on segment IX, in lateral view broad, keel-like, length about 0.3 times basal width (fig. 126), preanal appendages, in dorsal view ovoid (fig. 128). Segment X lateral lobes short, robust, sensilla not discerned (figs 126, 128), in lateral view hook-like, tapered distally, apices downturned below phallus, apices acute, angled ventrally (fig. 126). Phallus without any obvious included spines. Inferior appendages broadest in basal half, tapered distally, apices directed posteromesally, acute (figs 126–128), in lateral view, angled at about 30° to horizontal, length about twice width, appear sub-semicircular, dorsal margin slightly concave, ventral margin convex, apices narrowly rounded (fig. 126), in ventral view, mesal margin irregularly concave, lateral margins strongly convex (fig. 127).

Female. Unknown.

Etymology. Aliceae – named for Alice Wells (collector and tireless editor of early drafts of this and many of my other manuscripts).

Remarks. Chimarra aliceae is known from the type locality in south-east PNG.

Figures

Figures 120–128. Chimarra spp.; 120–122, Chimarra unidentata sp. nov., male, holotype, genitalia; 120, lateral; 121; ventral, 122, dorsal. 123– 125, Chimarra stellasp. nov., male, holotype, genitalia; 123, lateral; 124, ventral, 125, dorsal. 126–128, Chimarra aliceae sp. nov., male, holotype, genitalia; 126, lateral; 127, ventral; 128, dorsal.