Daternomina birrarung, 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 : 10-12

Daternomina birrarung sp. nov.

Figures 7–9 , 55

Diagnosis. Daternomina birrarung is distinguished from other species in the genus by having the superior appendages in lateral view branched, the ventral branch being strong.

Description. Head, body and wings brown; wings similar to D. irrorata ( Fig. 1 ). Forewing length about 3.1 times width: male 4.4–5.2 mm, female 5.8 mm. Forewing fork 2 relatively long, sessile, about 1.5–1.9 times length of fork 3, nygma present; fork 3 relatively long, length about 1.8–3.2 times length footstalk, footstalk length about 1.5–2.1 times length cross-vein m; r-m and m displaced at fork 3 by about 1.6–1.9 times length cross-vein m; fork 4 length similar to fork 3; fork 5 long, about 1.8 times length of fork 4. Hindwing length about 3 times width; fork 2 sessile, length about 1.7–2.0 times length of fork 3.

Male. Tergum X membranous with a pair of small disto-mesal processes ( Fig. 9 ). Superior appendages laterally compressed; in lateral view, branched, ventral branch slightly less robust than dorsal branch ( Fig. 7 ); in dorsal view, relatively slender, length about 6 times width, with a small process and spines on inner surface ( Fig. 9 ). Phallus robust, generally tube-like, with spines embedded apically; a single, robust process (phallic guide) arising from near the base of the inferior appendages ( Fig. 7 ). Inferior appendages small; in ventral view, fused basally, slender paired apices separated narrowly by a mesal split ( Fig. 8 ); in lateral view, narrowed at about midpoint ( Fig. 7 ).

Female. Genitalia with a pair of large, slightly divergent ‘tongue-shaped’ lobes on sternite VIII ( Fig. 55 ).

Holotype male: Victoria, Yarra R., 2 km N Wonga Park (about 37°44'S, 145°15'E), 23 Feb. 1976, A.N. ( NMV, T-19547).

Paratypes: Victoria. 1 male (specimen CT-446 figured), collected with holotype ; 2 males, 1 female (specimen CT-499 figured), Tyers R. on Yallourn N-Tyers Rd , S57, 38°8.9'S, 145°26.7'E, 12 Nov 1980 , Latrobe C Survey ; 5 males, Watts R., Fernshaw , 12 km NE Healesville, 11 Feb 1982 , Neboiss and Walker; 5 males, OShannassy R., 37°40'S, 145°39'E, 20 Jan 1983 , A.N; 1 female, Yarra R., 2 km N of Wonga Park , 23 Feb 1976 , A.N.; 1 female, Yarra R., 2 km NE Warrandyte , 9 Jan 1976 , A.N. ( NMV) .

Other material examined: Victoria. 1 female, Scrubby Valley Ck, Grampians , 12 Jan 1982 , A.W.; 1 female, Yarra R., 4 km SE of Kangaroo Ground , 17 Jan 1976 , A.N.; 1 male, Yan Yean Res. boatshed, 8 Dec 1976 , D. Cartwright; 2 females, same loc. and coll., 1 Mar 1978; 1 female, same loc. and coll., 15 Nov. 1979; 1 female, Bruce R., NE of Whittlesea , 4 Dec 1979 , Wells and Bailey; 1 male, King R., west branch, 10 km NE of Tolmie , 2 Feb 1984 , A.N.; 1 male, G. G. School, Timbertop nr Merrijig , 15 Feb 1958 , Edwards; 3 males, 8 females, Acheron R., 3.5km ESE Narbathong , 16 Feb 1983 , R. St Clair et al .; 1 female, same loc. and coll., 5 Jan 1984; 13 males, 5 females, Brittania Ck , 6 km S of Warburton, 27 Feb 1976 , A.N.; 1 male, 2 females, Toorongo R., 3 km N of Toorongo Rd, 37°46'S, 146°05'E, 24 Feb 1979 , Latrobe C Survey; 3 females, Ada R. on Ada R. Rd , 37°50.8'S, 145°52'E, 19 Jan 1979 , Latrobe C Survey; 1 female, Latrobe R., 9.8 km W of Noojee , 37°53.4'S, 145°54'E, 21 Jan 1979 , Latrobe C Survey; 1 male, Tanjil Junction, site 17A, lt tr., 20 Feb 1974 , LRES; 1 male, Tanjil R. Junction , 10 km N Willow Grove, 18 Dec 1973 , A.N.; 1 female, Tanjil R. nr Old Tanjil , 38°3.2'S, 146°11'E, 5 Feb 1980 , Latrobe C Survey; 1 male, 3km SW of Tanjil Bren , 13 Jan 1981 , A.N.; 4 females, Western Tyers R. on Xmas Ck Rd , 37°54.8'S, 146°15.9'E, 28 Jan 1979 , Latrobe C Survey; 1 female, Tyers R., site 22, lt tr., 24 Feb 1974 , LRES; 1 female, Thomson R., Knappings Clearing , 9 Mar 1979 , NMV Survey Dept ; 1 male, 4 females, Chinaman’s Ck, Wilsons Promontory , 38°55'S, 146°23'E, 19 Jan 1987 , T. New and K. Walker ; 1 male, Macalister-Barkly jn, Lyndon Flat, GRES Mc 14, 6 Dec 1977 , NMV Survey Dept ; 1 male, Wongungarra-Crooked R. jn, 9 Feb 1981 , J. Blyth; 1 female, Wentworth R, E of Dargo , 37°25'S, 147°25'E, 8 Feb 1981 , J. Blyth; 1 female, Gibbo R.- Morass Ck jn, 1 Feb 1974 , A.N.; 3 females, Cobungra R. at Anglers Rest , 15 Jan 1982 , A.W.; 3 females, same loc., 4 Feb 1974, A.N.; 16 females, Cabbage Tree Ck , 8 Feb 1961 , N.D.; 6 females, Reedy Ck nr Orbost , 6 Feb 1961 , N.D.; 1 male, Olive Ck, Lind Nat. Park , 18 Dec 1976 , A.N.; 5 males, 4 females, Wingan R., 8 km S of Princes Hway , 30 Jan 1975 , A.N.; 3 females, Genoa Ck, 5 km W of Genoa, 31 Jan 1975 , A.N. New South Wales. 1 male, Brown Mt , 18 Jan 1961 , E.F. Riek ( ANIC) ; 2 females, 10 km NW of Lithgow , 21 Dec 1977 , A.N.; 1 female, Dilgry R., 19 km NW Rawdon Vale , 31°53'S, 151°32'E, 18 Feb 1980 , A.A. Calder; 2 females, Boyd R., 29°50'S, 152°21'E, 11 Feb 1988 , G. Theischinger.

Etymology. Birrarung - Victorian Aboriginal word for the Yarra River (type locality).

Remarks. Daternomina birrarung has been collected widely from the eastern half of Victoria and eastern New South Wales (latitudinal range 29°50'- 38°55'S).

Figures

FIGURES 7–12. Daternomina spp. Male genitalia in lateral, ventral and dorsal views. 7–9: Daternomina birrarung sp. nov. 10–12: Daternomina jacksonae Neboiss. 11a: Daternomina jacksonae Neboiss (PT-1717, Martin Ck, E Vic.); inferior appendages, ventral view. i.a., inferior appendage; p.g., phallic guide; pha., phallus; pro. X, process on tenth abdominal segment, tergum; s.a., superior appendage.

FIGURES 55–62. Daternomina spp. Female genitalia in ventral view. 55: Daternomina birrarung sp. nov. 56: Daternomina jacksonae Neboiss. 57: Daternomina ulltra sp. nov. 58: Daternomina loowa sp. nov. 59: Daternomina irrorata (Kimmins). 60: Daternomina scindens (Neboiss) 61: Daternomina bifida sp. nov. 62: Daternomina scissura 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.