Chimarra huonana, 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 : 42

Chimarra huonana sp. nov.

Figures 134–136

Holotype. Male (figured specimen CT-387), PNG, Morobe Province, Finschhafen, Huon peninsula, 80 m, 6° 34' S, 147° 51' E, Malaise trap, 14 April 1963, J. Sedlacek ( BPBM).

Diagnosis. The male of Chimarra huonana can be separated from other New Guinea species, by the unique shape of the inferior appendages, which are very narrow basally, short, robust and irregular shaped.

Description. General body colour and wings brownish. Wings similar to those of C. ukarumpana (fig. 7). Length of forewing: male 5.3 mm. Forewing with forks 1, 2, 3 and 5 present, Rs slightly sinuous or curved, slightly thickened, basad (fig. 135).

Male. Segment IX anterior margin in lateral view, anteroventrally angular (fig. 134), ventral process on segment IX strongly basal to distal margin of segment IX (figs 134, 135), in lateral view, weakly keel-like, length about 0.25 times basal width. Preanal appendages, laterally compressed (figs 134, 136), in lateral view rounded (fig. 134), in dorsal view appear bifid, apices narrowly rounded (fig. 136). Segment X lateral lobes laterad of phallus, plate-like, laterally compressed, with sensilla not discerned (figs 134, 136), in lateral view robust, aligned level with and below phallus, apices appear acute and bifid (fig. 134). Phallus with two slender spines included subapically and near midlength (figs 134–136). Inferior appendages narrowed basally, robust in distal two thirds, directed dorsolaterally (figs 134, 135), in lateral view angled at about 80° to horizontal, length about 2.2 times width with irregular margins, dorsal margin sinusoidal, ventral margin with acute angular projections present near midlength (fig. 134), in ventral view lateral margins strongly curved, mesal margins somewhat irregular (fig. 135).

Female. Unknown.

Etymology. Huonana – named for the type locality (Huon Peninsula).

Remarks. Chimarra huonana is known from the type locality in north-east PNG.

Figures

Figures 129–136. Chimarra spp.; 129–131, Chimarra wara sp. nov., male, holotype, genitalia; 129, lateral; 130, ventral; 131, dorsal. 132–133, Chimarra goroca Sykora, male, genitalia; 132, lateral; 133, ventral. 134–136, Chimarra huonana sp. nov., male, holotype, genitalia; 134, lateral; 135, ventral; 136, dorsal.