A review of Australian long-horned caddisflies in the Oecetis pechana-group (Trichoptera: Leptoceridae), with descriptions of thirteen new species Author Wells, Alice text Memoirs of Museum Victoria 2006 2006-12-31 63 2 107 128 https://museumsvictoria.com.au/collections-research/journals/memoirs-of-museum-victoria/volume-63-issue-2-2006/pages-107-128/ journal article 10.24199/j.mmv.2006.63.13 1447-2554 8064969 Oecetis mouldsi sp. nov. Figures 33, 34, 67 Material examined. Holotype . Male, WA , Millstream , Fortescue R. , S of Roeborne , 12 Nov 1978 , M.B. and B.J. Moulds ( NMV T-18842). Paratypes . WA: 1 male , Drysdale R. headwaters, 30 km NW Mt Elizabeth HS, 30 Sep 1979 , J. Blyth ( NMV ) ; 1 male , 20°18.48'S , 119°15.16'E , N Pilbara , de Grey R. , 25 Apr 1992 , P.S. Cranston and P.J. Gullan ( ANIC ) ; 5 males , 9 females , 18°06'S , 125°42'E , Geikie Gorge , 5 Oct 1996 , I. Edwards ( NMV ) . NT: 1 male , 2 females , 12°40'S , 132°53'E , Jabiru , Town Lake , 17 May 1991 Wells and Webber ( ANIC ) . Other material. WA: 15°12'S , 128°12'E , Spillway Creek, Ord R. Dam, 20 Feb 1977 , J.E. Bishop ( NMV ); 1 male , 1 female , Spillway Creek , 3 Feb 1978 , J.E. Bishop ( NMV ) ; 2 females , Limestone Gorge , 16°02'S , 130°23'E , 23–26 Jun 1986 , M.B. Malipatil , Operation Raleigh 1986 ( NMV ) ; 1 male , Wickham R. , 23 km downstream Humbert R. Station , 16°49'S , 131°28'E , 11 Jul 1986 , I. Archibald , Operation Raleigh 1986 ( NMV ) ; 1 male , 17°01'S , 126°14'E , Bell Gorge , Melaleuca Hole , 13 Sep 1996 , I. Edwards ( NMV ) ; 1 male , 16°58'S , 125°59'E , Moll Gorge , Hann R. , 15 Sep 1996 , I. Edwards ( NMV ) . NT: 1 male , 5 km W of King R., SW of Katherine , 5 Feb 1977 , M.S. and B.J. Moulds ( NMV ) ; 1 male , 1 female , Katherine R. Gorge National Park , 13 Aug 1979 , J.E. Blyth ( NMV ) ; 1 male , 3 km E of Howard Springs , 17 Aug 1979 , J. Blyth ( NMV ) ; 3 males , 5 females , Jasper Creek , Victoria R. Downs Rd. , 45 km SSE Timber Creek , 17 Sep 1979 , J. Blyth ( NMV ) ; 4 males , 1 female , UDP Falls [Gunlom], 18–19 Jul 1980 , M.B. Malipatil ( NMV ) ; 1 male , 4 females , Roderick Creek , Gregory National Park , 15°38'S , 131°22'E , 4–6 Jul 1986 , I. Archibald , Operation Raleigh 1986 ( NMV ) ; 3 males , ARR, Magela Creek , 15 Feb 1991 , A. Wells ( NMV ) . Qld : 9 males , 5 females , Upper Ross R. below weir, S of Townsville , 8 May 1979 , A. Wells ( NMV ) ; 1 male , 21°07'S , 148°38'E , Finch Hatton Gorge , 14 Nov 1982 , T. Hinger ( NMV ) . Diagnosis. Closely resembling O. jenniae , but distinguished from that species by the more pronounced venation of the forewing, and in the male genitalia, by the inferior appendages in ventral view well separated mesially by a triangular apico-mesial process. Description . Male. Wings with veins more strongly pronounced than usual for pechana- group species, with vestiture short and pattern of dark areas at vein anastomoses and at margin; forewing with a large patch of scales, length 6.0–6.3 mm. Abdominal tergites II–IV darkly sclerotised; segment IX annulate, postero-lateral margin produced slightly, forming a short lateral lobe; segment X membranous, slender in lateral view. Genitalia, see figs 33, 34. Pre-anal appendages rounded apically. Phallus about length of 2 abdominal segments, in lateral view with paramere arched dorsally. Inferior appendages with a basi-dorsal pouch; in ventral view broad-based, with slender dorso-lateral lobe, and a triangular process near base on mesial margin; in lateral view, stout. Distribution. From north-western WA to the north of the NT, and from 2 localities in north-eastern in Qld. Remarks. Superficially males of this species resemble those of O. jenniae , with which they are often collected, but they are clearly differentiated from that species by the more pronounced wing venation, and narrower inferior appendages. Etymology . Named for Max Moulds.