Ecnomina chorisis 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 : 54

publication ID

https://doi.org/ 10.11646/zootaxa.1774.1.1

persistent identifier

https://treatment.plazi.org/id/0749822F-FFDE-600C-6AE7-CBBACB53AECC

treatment provided by

Felipe

scientific name

Ecnomina chorisis Neboiss
status

 

Ecnomina chorisis Neboiss View in CoL

Figures 117–119 View FIGURES 114–122

Ecnomina chorisis Neboiss, 1978: 828 View in CoL , figs 4–6. — Neboiss 1986: 154

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

Description. Head, body light brown and wings pale; wings similar to E. legula ( Fig. 3 View FIGURES 1–6 ). Forewing length about 3 times width: male 2.8 mm. Forewing fork 2 relatively long, sessile, length about 1.3–1.4 times length of fork 3; fork 3 relatively long with short footstalk, length fork greater than 3.2 times length footstalk, footstalk length about 1.2–1.5 times length cross-vein m, r-m and m not contiguous at fork 3 by about 0.5–0.9 times length of cross-vein m; fork 4 shorter than fork 3; fork 5 long, length about 1.8 times length of fork 4. Hindwing length about 3.0–3.2 times width, fork 2 sessile, length about 1.5 times length of fork 3.

Male. (Revised after Neboiss 1978). Tergum X membranous ( Fig. 119 View FIGURES 114–122 ). Superior appendages in lateral view, sub-rectangular, length about 3 times width, with a robust, hooked ventro-distal projection ventrobasally ( Fig. 117 View FIGURES 114–122 ); in dorsal view, length about 3.5 times width, with two pairs of small meso-subapical teeth ( Fig. 119 View FIGURES 114–122 ). Phallus generally tube-like, with a pair of elongate parameres dorso-laterally ( Fig. 117 View FIGURES 114–122 ). Inferior appendages fused, dorso-ventrally flattened, up curved laterally; in ventral view, large, broad, length about 1.2 times width, entire margin distally ( Fig. 118 View FIGURES 114–122 ); in lateral view, length about 2.5 times width, broad near middle, tapered distally ( Fig. 117 View FIGURES 114–122 ).

Female. Unknown.

Material examined: Holotype male, Queensland, Fraser Island, Little Minker Lake , 18 Dec 1975, H. Burton ( NMV, T-5698, specimen PT-548 figured).

Remarks. Ecnomina chorisis appears to be restricted in distribution and probably is rare as it has been collected from the type locality only, in south-eastern Queensland (latitude 24°54'S). Neboiss’s (1978) 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.

NMV

Museum Victoria

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Trichoptera

Family

Ecnomidae

Genus

Ecnomina

Loc

Ecnomina chorisis Neboiss

Cartwright, David I. 2008
2008
Loc

Ecnomina chorisis

Neboiss, A. 1986: 154
Neboiss, A. 1978: 828
1978
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