The long-horned caddisfly genus Oecetis (Trichoptera: Leptoceridae) in Australia: two new species groups and 17 new species Author Wells, Alice text Memoirs of Museum Victoria 2004 2004-12-31 61 1 85 110 https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-61-issue-1-2004/pages-85-110/ journal article 10.24199/j.mmv.2004.61.7 1447-2554 12209435 Oecetis dostinei sp. nov. Figures 88–90, 128 Oecetis sp. G .— Wells, 1991 : fig. 144. Material examined. Holotype male, Qld , Mulgrave River W of Gordonvale , 17°13.9 ’ S 145°57.1 ’ E , 29 Apr 1979 , A. Wells ( NMV T-18521, slide). Paratypes . Qld : male, data as for holotype ( NMV ) (slide) ; male, Hann River , 73 km NWbyW Laura , 15°12'S 143°52'E , 27 Jun 1986 , JC Cardale ( ANIC ) . NT: male, female, UDP Falls [Gunlom], 13°24.9'S 132°26.0'E , 18–19 Jul 1980 , MB Malipatil ( NTM ) ; male, ARRS South Alligator River at Gimbat OSS Stn , 13°34.3'S 132°36.7'E , 24 Mar 1988 , Wells and Suter ( NMV ) ; 2 males , same loc., 28 Apr 1988 , P. Dostine ( NTM ) ; male, Litchfield National Park , 13°03'S 130°47'E , 6 Jun 1991 , Wells and Webber ( NTM ) ; male, Butterfly Gorge , Katherine River Gorge National Park , 27 Jan 1977 . M.S. and B.J. Moulds ( NMV ) . Diagnosis . Forewing length scarcely 4 times maximum width, spotted and moth-like, but with wing markings on the forewing smaller than in O. cepaforma , fork 1 on forewing sessile. In male genitalia inferior appendages with length about equal to 3 times width, without a small spur on the basomesial angle; tergite X truncate apically. Description . Spurs 1, 2, 2. Male forewing length 6.1–6.4 mm . Wings, broad and spotted, forewing (Fig. 88) with fork 1 sessile and posterior anastomosis stepped, with t1 more distal than t3 which is more distal than t2. Genitalia, Figs 89, 90. Segment IX widest midlaterally, preanal appendages large, rounded to broadly conical in dorsal view, in contact in midline, but not fused. Segment X broad, apically truncate, without medial process. Inferior appendages clasper-shaped, widely separated at bases, curving outwards beyond a mesial angle bearing a cluster of short stout setae. Phallus very short. Distribution . Northern NT and northern Qld (Fig. 128).