Chimarra lindyae, 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 : 44-46

Chimarra lindyae sp. nov.

Figures 146–148

Holotype. Male (specimen in alcohol, CT-715 figured), PNG, West Highlands Province, Peregai , 1250 m, about 6° 09' S, 144° 11' E, 14 June 1986, A. Wells ( NMV, T-22475).

Paratypes. PNG. 6 males, collected with holotype ( NMV) .

Diagnosis. The males of C. lindyae can be separated from all other New Guinea species, by the presence of a short, acute, subapical process on the inferior appendages.

Description. General body colour and wings light brownish. Wings similar to those of C. ukarumpana (fig. 7). Length of forewing: male 5.3–6.1 mm. Forewing with forks 1, 2, 3 and 5 present, Rs slightly sinuous or curved, strongly thickened, basad of discoidal cell; hind wing with forks 1, 2, 3 and 5 present.

Male. Segment IX anterior margin in lateral view, anteroventrally rounded (fig. 146), ventral process on segment IX, in lateral view, short, keel-like, length about 0.4-0.5 times basal width, preanal appendages ovoid in lateral and dorsal views (figs 146, 148). Segment X lateral lobes aligned alongside and below phallus, broad basally, narrowed near midlength, slender in distal third, apices rounded, sensilla not discerned. Phallus without any obvious included spines (figs 146–148). Inferior appendages elongate with short acute process subapically, apices acute, directed posteromesally (figs 146, 147), in lateral view, angled at about 45° to horizontal, length about 3.7 times width, appear sub-rectangular, dorsal and ventral margins mostly straight, subapical process forms a concavity with apex (fig. 146), in ventral and dorsal views lateral margins curved (figs 147, 148).

Female. Unknown.

Etymology. Lindyae – named for Lindy Cartwright, whose support and encouragement has been invaluable during this long project.

Remarks. Chimarra lindyae is known from seven male specimens from central PNG.

Figures

Figures 146–154. Chimarra spp.; 146–148, Chimarra lindyae sp. nov., male, holotype, genitalia; 146, lateral; 147, ventral; 148, dorsal. 149–151, Chimarra kebarana sp. nov., male, holotype, genitalia; 149, lateral; 150, ventral; 151, dorsal. 152–154, Chimarra simbuensis sp. nov., male, holotype, genitalia; 152, lateral; 153, ventral; 154, dorsal.