Chimarra jari, 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 : 10

Chimarra jari sp. nov.

Figures 20–22

Holotype. Male (dried, pinned specimen, CT-338 figured), Indonesia, Papua Province (West Papua), Star Range, 1500 m, Sibil , 30 June 1959, Museum Leiden, Netherlands, New Guinea exp. ( BPBM).

Diagnosis. The male of C. jari can be separated from all other New Guinea species by the subapical, mesal finger-like projection on the inferior appendages, and more basally situated, slender ventral process on segment XI.

Description. General body colour and wings pale (faded). Wings similar to those of C. ukarumpana (fig. 7). Length of forewing: male 5.1 mm. Forewing with forks 1, 2, 3 and 5 present, Rs moderately sinuous or curved, strongly thickened basad of discoidal cell.

Male. Segment IX anterior margin in lateral view, with rounded extension ventrally (fig. 20); ventral process a short, slender projection, situated towards base of segment (figs 20, 21), in lateral view length about 5.3 times width, slightly tapered distally (fig. 22), in ventral view slightly rounded apically (fig. 21), preanal appendages small, rounded apically (fig. 22). Segment X with pair of plate-like, laterally flattened lateral lobes, sensilla not obvious (figs 20–22), in lateral view lobes appear robust, broadly rounded apically (fig. 20), in dorsal view expanded basally, appear very slender distally, apically acute (fig. 22). Phallus slightly laterally compressed with one slender spine included at about midlength (figs 20, 22). Inferior appendages robust, apices acute (figs 20–22), in lateral view angled at about 30° to horizontal, length about 3 times width, broadest near middle, narrowed basally, tapered in apical third (fig. 20), in ventral and dorsal views broad with lateral and mesal margins in distal half almost parallel, subapically with slender, finger-like mesal process (figs 21, 22).

Female. Unknown.

Etymology. Jari – Indonesian for finger.

Remarks. Chimarra jari is known only from the holotype male from eastern Papua.

Figures

Figures 17–25. Chimarra spp.; 17–19, Chimarra wauana sp. nov., male, holotype, genitalia; 17, lateral; 18, ventral; 19, dorsal. 20–22, Chimarra jari sp. nov., male, holotype, genitalia; 20, lateral; 21, ventral; 22, dorsal. 23–25, Chimarra johansoni sp. nov., male, holotype, genitalia; 23, lateral; 24, ventral; 25, dorsal.