Ecnomina cohibilis 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 : 52-53

publication ID	https://doi.org/ 10.11646/zootaxa.1774.1.1
DOI	https://doi.org/10.5281/zenodo.5124217
persistent identifier	https://treatment.plazi.org/id/0749822F-FFD8-600D-6AE7-CF7FC8F3ADE9
treatment provided by	Felipe
scientific name	Ecnomina cohibilis Neboiss
status

Treatment

Ecnomina cohibilis Neboiss View in CoL

Figures 114–116 View FIGURES 114–122 , 183 View FIGURES 175–183

Ecnomina cohibilis Neboiss, 1982: 290 View in CoL , 26–28, 38, 39, 46. — Neboiss 1986: 154.

Diagnosis. Ecnomina cohibilis resembles E. chorisis in possessing broad, fused, inferior appendages, with entire margin, not incised meso-distally, but it is distinguished by inferior appendages with length less than width.

Description. (Revised after Neboiss 1982). Head, body and wings fawn, abdomen paler ventrally; wings (fig. 46, Neboiss 1982) similar to E. legula ( Fig. 3 View FIGURES 1–6 ). Forewing length about 3.2 times width: male 3.3–3.8 mm, female 3.3–4.1 mm. Forewing fork 2 relatively long, sessile, length about 1.2–1.4 times length of fork 3; fork 3 relatively long with short footstalk, length fork greater than 8 times length footstalk, footstalk length about 0.1–0.6 times length cross-vein m, r-m and m not contiguous at fork 3 by about 1.0–1.4 times length of crossvein m; fork 4 shorter than fork 3; fork 5 long, length about 1.9 times length of fork 4. Hindwing length about 3.2–3.4 times width, fork 2 sessile, length about 1.5–1.6 times length of fork 3.

Male Tergum X membranous with a small mesal lobe ( Fig. 116 View FIGURES 114–122 ). Superior appendages in lateral view, sub-rectangular, length about 2.5 times width, with a robust, hooked ventro-distal projection ventro-basally ( Fig. 114 View FIGURES 114–122 ); in dorsal view, length about 4 times width, with two pairs of small meso-subapical teeth ( Fig. 116 View FIGURES 114–122 ). Phallus generally tube-like, a single spine apically, with a pair of elongate parameres dorso-laterally ( Fig. 114 View FIGURES 114–122 ). Inferior appendages fused, dorso-ventrally flattened, up curved laterally; in ventral view, large, broad, length about 0.6 times width, truncate, entire margin distally, with small pair of processes disto-laterally ( Fig. 115 View FIGURES 114–122 ); in lateral view, length about 2.5 times width, broad near middle, tapered distally ( Fig. 114 View FIGURES 114–122 ).

Female. Genitalia with a single relatively short and broadbased mesal process on sternite VIII, tapered distally to a rounded point; segment IX relatively long, tapered slightly distally, segment X relatively short and segments IX and X relatively slender ( Fig. 183 View FIGURES 175–183 ).

Material examined: Western Australia. Holotype male, Jandakot, Banganup Lake, 8 Nov 1971, J.C. Taylor. ( NMV, T- 6408). Paratypes, 15 males (specimen PT-632 figured), 15 females (specimen figured), collected with holotype ( NMV). Other Western Australian records refer to Neboiss (1982) .

Remarks. Ecnomina cohibilis is relatively abundant but restricted to the type locality in south Western Australia (latitude 32°07'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.