Ecnomina cohibilis Neboiss
Creators: name: Cartwright, David I.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Ecnomidae
Ecnomina
Ecnomina cohibilis

description: Ecnomina cohibilis Neboiss   
Figures 114–116, 183  
 Ecnomina cohibilis Neboiss, 1982: 290, 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). 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). Superior appendages in lateral view, sub-rectangular, length about 2.5 times width, with a robust, hooked ventro-distal projection ventro-basally (Fig. 114); in dorsal view, length about 4 times width, with two pairs of small meso-subapical teeth (Fig. 116). Phallus generally tube-like, a single spine apically, with a pair of elongate parameres dorso-laterally (Fig. 114). 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); in lateral view, length about 2.5 times width, broad near middle, tapered distally (Fig. 114).  
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).  
 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.
description: Published as part of Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), pp. 1-76 in Zootaxa 1774 (1) on pages 52-53, DOI: 10.11646/zootaxa.1774.1.1, http://zenodo.org/record/5124133