Orphninotrichia desleyae, Wells, Alice, 2010

Wells, Alice, 2010, Five new species and new records of Hydroptilidae (Trichoptera) from the Wet Tropics of northeastern Queensland, Zootaxa 2641, pp. 47-54 : 49-50

Orphninotrichia desleyae sp. nov.

( Figs 3, 4 )

Material examined. Holotype male, Queensland, Crystal Cascades, Tributary of Crystal Creek, 16.96508S 145.67603E GPS ± 2 m, 69 m asl, 5 Nov 2008, sweep net, A. Wells, (QM).

Diagnosis. This species is distinguished from all other congeners by the broadly spatulate apicomedial projection on abdominal sternite VIII.

Description. Male: Body and wings jet black. Forewing length 1.7 mm. Antennae 20-segmented. Male genitalia ( Figs 3, 4 ): Abdominal sternite VIII produced in stout apicomedial tongue. Tergite X in ventral view stout, rounded apically. Sternite IX with deep V-shaped excision, laterally produced in lobes that taper towards apices. Inferior appendages divided, ventral-most lobe fused to sternite IX, short, robust, sclerotised darkly on knob-like apices; dorsal lobe smaller, with small sclerotised area apico-laterally. Tergite X divided into 2 elongate-triangular lobes, each with subapical seta. Aedeagus elongate, extending from mid abdominal segment III to tip of inferior appendages, slender but flared at apex.

Remarks. It was not possible to associate the females of this species since this male and the males of O. alata sp. nov were collected together.

Etymology. Named for Desley Tree, who was collecting thrips nearby when some of these northern Australian species were collected.

Figures

FIGURES 1 – 6. Orphninotrichia species, male genitalia in ventral and left lateral views: 1, 2, O. barbarae sp. nov.; 3, 4, O. desleyae sp. nov.; 5, 6, O. alata sp. nov.