Ecnomina anulla, Cartwright, 2008

Cartwright, David I., 2008, A review of the Australian species of Ecnomina Kimmins and Daternomina Neboiss (Trichoptera: Ecnomidae), Zootaxa 1774 (1), pp. 1-76 : 56-57

Ecnomina anulla sp. nov.

Figs 126–128

Diagnosis. Ecnomina anulla closely resembles other species in the group in possessing the slender lateral pair of dorsal processes on tergum X and shares with E. alluna and E. bula laterally incised fused or joined inferior appendages. It is distinguished by the inferior appendages, which in ventral view are more strongly excised laterally.

Description. Head, body and wings brown, abdomen paler ventrally; wings similar to E. legula ( Fig. 3 ). Forewing length about 3.0–3.2 times width: male 3.4–3.9 mm. fork 2 relatively long, sessile, length about 1.3–1.4 times length of fork 3; fork 3 relatively long, with short footstalk, fork about 4 times length footstalk, footstalk length about 1.2 times length cross-vein m, r-m and m nearly contiguous at fork 3, r-m and m separated by about 1.2 times length of cross-vein m; fork 4 shorter than fork 3; fork 5 long, length about twice length of fork 4. Hindwing length about 3.2–3.3 times width, fork 2 sessile, length about 1.8–1.9 times length of fork 3.

Male. Tergum X membranous, fused basally, with one pair of relatively robust dorsal processes mesally and slender pair laterally ( Fig. 128 ), a ventral process also present. Superior appendages in lateral view, robust, broad basally, tapered in distal half, length about 2.2 times width ( Fig. 126 ); in dorsal view, robust, length about 2.8 times width, with several spines in distal third, dilated slightly distally ( Fig. 128 ). Phallus down turned and dilated apically ( Fig. 126 ). Inferior appendages short, fused or joined; in ventral view, length about 0.8 times width, broad basally, rounded baso-laterally, narrowed about middle, excised strongly dist-laterally, truncate distally ( Fig. 127 ); in lateral view, narrowed and upturned slightly in distal half ( Fig. 126 ).

Female. Unknown.

Holotype male: Queensland, Dalrymple Ck nr Eungella , 21°02'S, 148°43'E, 3 Apr 1993, G. Theischinger ( NMV, T-19756).

Paratypes: Queensland. 3 males (specimen CT-522 figured), collected with holotype ( NMV) .

Etymology. Anulla - anagram of alluna .

Remarks. Ecnomina anulla has been collected from the type locality in coastal north-eastern Queensland (latitude 21°02'S).

Figures

FIGURES 123–128. Ecnomina spp. Male genitalia in lateral, ventral and dorsal views. 123–125: Ecnomina manicula sp. nov. 126–128: Ecnomina anulla 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.