Chimarra wara, 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 : 40

Chimarra wara sp. nov.

Figures 129–131

Holotype. Male (figured specimen CT-347), PNG (Western Highlands Province), Baiyer River sanctuary, 5° 30' S, 144° 10' E, 16 June 1986, A. Wells ( NMV, T-22468).

Paratypes. PNG. 6 males, (Western Highlands Province), Baiyer River sanctuary, Trauna River , 5° 35' S, 144° 10' E, UV light, 17 June 1986, A. Wells ( NMV) .

Diagnosis. The males of Chimarra wara can be separated from other New Guinea species, particularly C. ediana , C. milneana , C. karamui and C. cavata , by the combination of small features on the inferior appendages, which in lateral view have an acute angular projection present on the mid ventral margin and distal to this is narrowed strongly to a curved digitiform shape.

Description. General body colour and wings fawn (faded) to light brownish. Wings similar to those of C. ukarumpana (fig. 7). Length of forewing: male 5.0–6.0 mm. Forewing with forks 1, 2, 3 and 5 present, Rs slightly sinuous or curved, moderately 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. 129), ventral process on segment IX short, strongly basal to distal margin of segment IX (figs 129, 130), in lateral view, weakly keel-like, length about 0.35 times basal width (fig. 129), in ventral view appears triangular (fig. 130). Preanal appendages, in lateral view rounded (fig. 129), in dorsal view appear rounded or more acute distally (fig. 131). Segment X lateral lobes both laterad and ventral to phallus, with sensilla not discerned (figs 129, 131), in lateral view, lobes laterad to phallus robust and spine-like ventral to phallus (fig. 129), in ventral and dorsal views, lobes laterad of phallus with disto-lateral margins slightly concave, dilated subapically, apices rounded (figs 130, 131), in ventral view, spine-like lobe tapered distally, apex acute (fig. 130). Phallus with two slender spines included subapically (figs 130–131). Inferior appendages robust in basal half, tapered and slender in distal third, apices slightly inflexed, acute (figs 129–131), in lateral view angled at about 30° to horizontal, length about twice maximum width, dorsal margin slightly sinusoidal, ventral margin with acute angular projection present near midlength, margin concave distally (fig. 129), in ventral view, lateral margins curved, mesal margins with series of small crenulations with attached hairs (fig. 130).

Female. Unknown.

Etymology. Wara – New Guinea pidgin for water, freshwater or river (Locality- habitat).

Remarks. Chimarra wara is known from seven male specimens collected from the Western Highlands in central 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.