Figs 135–137, 187

Diagnosis. Ecnomina bula is distinguished from others in the group by the apices of the fused inferior appendages, which in ventral view are narrowly separated by a V-shaped notch.

Description. Head, body and wings brown, abdomen paler ventrally; wings similar to E. legula (Fig. 3). Forewing length about 3.0–3.1 times width: male 3.5–4.3 mm; female 3.9–4.4. Forewing 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 1.3–1.4 times length cross-vein m, r-m and m nearly contiguous at fork 3, r-m and m separated by about 0.8–1.0 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 3.3–3.4 times width, fork 2 sessile, length about 1.8 times length of fork 3.

Male. Tergum X membranous, fused basally, with two pairs of dorsal processes, a robust mesal pair and a slender pair laterally (Fig. 137), a ventral process also present. Superior appendages in lateral view, robust, broad basally, tapered in distal half, length about twice width (Fig. 135); in dorsal view, length about 3 times width, with several spines in distal third, dilated slightly distally (Fig. 137). Phallus with slightly down turned ventral process and dorsal process apically (Fig. 135). Inferior appendages short, fused basally, dorso-ventrally flattened; in ventral view, length about same as width, broad basally, rounded baso-laterally, excised slightly disto-laterally, with apices narrowly separated by small V-shaped notch (Fig. 136); in lateral view, relatively slender, tapered slightly distally (Fig. 135).

Female. Genitalia with a single short, robust mesal process, slightly truncate apically, on sternite VIII; segment IX relatively long, tapered slightly distally, segment X relatively short and segments IX and X relatively slender (Fig. 187).

Holotype male: New South Wales, Wallagaraugh R., Princes Hwy bridge (about 37°23'S, 149°42'E), 29 Jan 1975, A.N. (NMV, T-19788).

Paratypes: New South Wales. 5 males (specimen CT-427 figured), 2 females (specimen CT-548 figured), collected with holotype (NMV).

Other material examined: New South Wales. 1 male, 10 km NW of Lithgow, 21 Dec 1977, A.N.; 1 male, U. Kangaroo Valley, 24 Nov 1960, E.F. Riek (ANIC); 1 female, same loc. and coll., 26 Mar 1961 (ANIC). Victoria. 1 female, Wingan R., 8 km S of Princes Hwy, 30 Jan 1975, A.N.; 1 male, 10 females, Brodribb R., Sardine Ck track, 10 Feb 1980, Wells and McNamara; 1 male, Reedy Ck, E. Gippsland, 6 Feb 1961, N.D.; 10 males, Cabbage Tree Ck, 8 Feb 1961, N. Dobrotworsky (ANIC); 2 females, Wentworth R., E of Dargo, 37°25'S, 147°25'E, 8 Feb 1981, J.Blyth; 1 male, Tyers R., site 22, 24 Feb 1974, LRE Survey; 1 male, 3 females, Tyers R. on Yallourn N-Tyers Rd, 38°8.9'S, 145°26.7'E, 12 Nov 1980, Latrobe C Survey; 1 male, Tanjil R., 4 km N of Moe, 18 Feb 1973, collector?, 1 female, Tanjil R. on Moe-Gooding Rd, 38°8.4'S, 146°15.9'E, 6 Feb 1980, Latrobe C Survey; 1 male, Strathbogie, 23 Jan 1956, A.N; 1 male, Murrindal, 6 Jan 1967, E.H.S.

Etymology. Bula - New South Wales Aboriginal word for two (apices of inferior appendages).

Remarks. Ecnomina bula has been collected from south-eastern New South Wales and the eastern half of Victoria (latitudinal range 33°28'- 38°8.9'S).