Ecnomina sentosa Neboiss

Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), Zootaxa 1774 (1), pp. 1-76 : 50

publication ID	https://doi.org/ 10.11646/zootaxa.1774.1.1
DOI	https://doi.org/10.5281/zenodo.5124207
persistent identifier	https://treatment.plazi.org/id/0749822F-FFDA-6008-6AE7-C9B2C8F3AD34
treatment provided by	Felipe
scientific name	Ecnomina sentosa Neboiss
status

Treatment

Ecnomina sentosa Neboiss View in CoL

Figs 108–110 View FIGURES 108–113 , 181 View FIGURES 175–183

Ecnomina sentosa Neboiss, 1982: 290 View in CoL , figs 24, 25, 35–37.— Neboiss 1986: 153.

Diagnosis. Ecnomina sentosa is distinguished by the slender mesal process on the superior appendages.

Description. (Revised after Neboiss 1982). Head, body and wings light brown; wings (fig. 37, Neboiss 1982) similar to E. legula ( Fig. 3 View FIGURES 1–6 ). Forewing length about 2.8 times width: male 3.6–4.3 mm, female 3.7–4.5 mm. Forewing fork 2 relatively long, sessile, length about 1.3 times length of fork 3; fork 3 relatively long sessile or with short footstalk, length fork greater than 9 times length footstalk, footstalk length about 0–0.6 times length cross-vein m, r-m and m not contiguous at fork 3 by about same length as cross-vein m; fork 4 shorter than fork 3; fork 5 long, length about 1.6 times length of fork 4. Hindwing length about 3 times width, fork 2 sessile, length about 1.1–1.5 times length of fork 3.

Male. Tergum X membranous with a pair of short processes disto-laterally ( Fig. 110 View FIGURES 108–113 ) Superior appendages in lateral view, sub-rectangular, length about 3.5 times width, with slender mesal process ( Fig. 108 View FIGURES 108–113 ); in dorsal view, length about 4 times width, slightly inflected distally ( Fig. 110 View FIGURES 108–113 ). Phallus generally tube-like, slender, with pair of parameres laterally ( Fig. 108 View FIGURES 108–113 ). Inferior appendages fused, dorso-ventrally flattened, up curved laterally; in ventral view, large, broad, length about 0.9 times width, a pair of widely separated, short, projections distally ( Fig. 109 View FIGURES 108–113 ); in lateral view, length about 2.5 times width, slightly excised distally ( Fig. 108 View FIGURES 108–113 ).

Female. Genitalia with a single elongate and slender mesal process on sternite VIII; segment IX relatively long, tapered slightly distally, segment X relatively short and segments IX and X relatively slender and with several pairs of hairs ( Fig. 181 View FIGURES 175–183 ).

Material examined: Western Australia. Holotype male, Margaret River , rapids crossing, 25 km S of Busselton, 22 Nov 1978, A.N. ( NMV, T- 6271) . Paratypes, 30 males (specimen PT-630 figured), 30 females (specimen PT-723 figured), collected with holotype ( NMV) . Other material. Other Western Australian records refer to Neboiss (1982) .

Remarks. Ecnomina sentosa is relatively common and widespread in south-western Australia (latitudinal range 32°46' - 34°57'S). Neboiss’s (1982) figures have been redrawn to allow direct comparisons and to accompany the description that is revised in light of new interpretations of Ecnomina genitalic and wing structures.