Ecnomina thinotes 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 : 62

Ecnomina thinotes Neboiss

Figs 141–143 , 189

Ecnomina thinotes Neboiss, 1978: 827 , figs 1–3. — Neboiss 1986: 154.

Diagnosis. Ecnomina thinotes is distinguished from others in the genus by the superior appendages, which have a pair of short, robust mesal processes near the middle and the pair of relatively robust dorsal processes on tergum X.

Description. Head, body and wings brown, abdomen paler ventrally; wings similar to E. legula ( Fig. 3 ). Forewing length about 2.9–3.2 times width: male 3.1–4.2 mm, female 3.8–4.6 mm. Forewing fork 2 relatively long, sessile or with short footstalk, footstalk length up to 0.7 times length cross-vein r-m, length fork about 1.1–1.5 times length of fork 3; fork 3 relatively long, with short footstalk, fork ranges between 3–9 times length footstalk, footstalk length between 0.7–1.7 times length cross-vein m, r-m and m nearly contiguous at fork 3, r-m and m separated by about 0.3–0.7 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 3.3 times width, fork 2 sessile, length about 1.2–1.6 times length of fork 3.

Male. (Revised after Neboiss 1978). Tergum X membranous, fused basally, with one pair of relatively robust dorsal processes ( Fig. 143 ). Superior appendages in lateral view, sub-rectangular, length about 4 times width ( Fig. 141 ); in dorsal view, length about 6 times width, with a group of relatively long spines distally and with a pair of short, robust mesal processes near middle ( Fig. 143 ). Phallus simple, tube-like ( Fig. 141 ). Inferior appendages short, fused; in ventral view, length about same as width, rounded laterally, with slightly crenulated margin ( Fig. 142 ); in lateral view, robust, length about twice width ( Fig. 141 ).

Female. Genitalia with a single mesal process on sternite VIII, broad based, narrowed in distal half; segment IX relatively long and slender, tapered slightly distally, segment X relatively short ( Fig. 189 ).

Material examined: Queensland. Holotype male. Fraser Island, Lake Wabby , 7 May 1975 , H. Burton ( NMV, T-5699). Paratypes. Queensland. 2 females (specimen PT-554 figured), collected with holotype ( NMV); 1 male, L. Wabby, south end, Fraser Is. , 14 Dec 1975 , H. Burton; 5 males (specimen PT-546 figured), 1 female, E of L. Bowarrady, Fraser Is. , 2-3 Dec 1975 , A. Slater and G. Thompson; 1 male, Fraser Is., Yidney scrub, 3-4 Dec 1975 , A. Slater and G. Thompson. Other material. Queensland. 1 female, Coombroo Lake, Fraser Isl. , at light, 21 Mar 1979 , K.J. Lambkin; 1 female, nr Wabby Lake, Fraser Isl. , 25 Nov 1976 , at light, G. Thompson, P. Webb and M. R. Rice; 1 male (genitalia missing?), Blue Lake, North Stradbroke Is. , 11 Nov 1973 , coll.?; 2 males, 26 females, Coondoo Ck, 30 km NE of Gympie, Toolara State Forest , MV lt, 28 Oct 1980 , A.N.; 1 male, Seary’s Ck, Cooloola N.P, Rainbow Beach , 25°58'S, 153°04'E, 9 Feb 1987 , G. Theischinger. New South Wales. 1 male, Kangaroo Valley , 22 Mar 1961 , E.F. Riek ( ANIC). Victoria. 2 males, L. Barracoota, 28 Jan 1975 , A.N.; 1 male, 2 females, Five Mile Rd swamp, Wilsons Promontory , 9 Dec 1986 , A.N.; 10 males, 3 females, Miranda Ck, Wilsons Promontory , 38°56'S, 146°28'E, 6 Jan 1986 , A.N.; 8 males, 11 females, same loc. and coll., 19 Jan 1987. South Australia. 2 males, 3 females, Rocky R., deep lagoon, Kangaroo Is., 19 Dec 1980 , A.W.; 1 male, Rocky R. at bridge, 20 Dec 1980 , A.W.

Remarks. Ecnomina thinotes appears to have a widespread but patchy distribution. It has been collected from coastal south-eastern Queensland including several islands, one site in south-eastern New South Wales, three sites in eastern and southern Victoria and from Kangaroo Island off southern South Australia (latitudinal range 25°10'- 38°56'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.

Figures

FIGURES 138–143. Ecnomina spp. Male genitalia in lateral, ventral and dorsal views. 138–140: Ecnomina volcella sp. nov. 141–143: Ecnomina thinotes Neboiss.

FIGURES 184–195. Ecnomina spp. Female genitalia in ventral view. 184: Ecnomina manicula sp. nov. 185: Ecnomina alluna sp. nov. 186: Ecnomina wirromandi sp. nov. 187: Ecnomina bula sp. nov. 188: Ecnomina volcella sp. nov. 189: Ecnomina thinotes Neboiss. 190: Ecnomina ramosa sp. nov. 191: Ecnomina merki sp. nov. 192: Ecnomina concava sp. nov. 193: Ecnomina gippslandica sp. nov. 194: Ecnomina serrata sp. nov. 195: Ecnomina sheldoni sp. nov.

FIGURES 1–6. 1–2. Daternomina irrorata (Kimmins). 1: Forewing and hindwing. 2: Head and thorax, dorsal view. 3– 6. Ecnomina spp. 3. Ecnomina legula Neboiss, forewing and hindwing. 4–5. Ecnomina scutica sp. nov. 4: Head and thorax, dorsal view. 5: Wings, section of forewing and hindwing. 6. Ecnomina spinosa Kimmins, head and thorax, dorsal view. n., nygma; o.w, occipital wart.