Oecetis mouldsi Wells 2006, sp. nov.
Creators: name: Wells, Alice
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Leptoceridae
Oecetis
Oecetis mouldsi

description: 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.
description: Published as part of Wells, Alice, 2006, A review of Australian long-horned caddisflies in the Oecetis pechana-group (Trichoptera: Leptoceridae), with descriptions of thirteen new species, pp. 107-128 in Memoirs of Museum Victoria 63 (2) on pages 120-121, DOI: 10.24199/j.mmv.2006.63.13, http://zenodo.org/record/8064969