Oecetis buitenzorgensis Ulmer, 1951

Wells, Alice, 2006, A review of Australian long-horned caddisflies in the Oecetis pechana-group (Trichoptera: Leptoceridae), with descriptions of thirteen new species, Memoirs of Museum Victoria 63 (2), pp. 107-128 : 122

Oecetis buitenzorgensis Ulmer

Figures 43–45, 71

Oecetis buitenzorgensis Ulmer, 1951: 459 , figs 708–712. Holotype. Java (ZMB).

Material examined. Qld: 7 males, Little Mulgrave R., 28 Jun 1971, E.F. Riek ( ANIC) ; 3 males, West Claudie R., Iron Range , 17 Sep 1974, M.S. Moulds ( NMV, 1 male on slide) ; 1 male, Middle Claudie R., Iron Range , 2–9 Oct 1974, M.S. Moulds ( NMV) ; 1 male, Mcleod R., 15 km W of Mt Carbine, 22–23 Jun 1975, S.R. Monteith ( ANIC) ; 3 males, 1 female, Mulgrave R., W of Gordonvale, 29 Apr 1979, A. Wells ( NMV: WTH 1387 , 1 male on slide) ; 2 males, 5 km W by N Rounded Hill nr Hope Vale Mission , 15°17'S, 145°10'E, 7 Oct 1980, J.C. Cardale ( ANIC) ; 1 male, 3 km ENE Mt Tozer , 12°44'S, 143°14'E, 2 Jul 1986, J.C. Cardale ( ANIC) ; 4 males, 2 females, 9 km ENE Mt Tozer , 12°43'S, 143°17'E, 5–10 Jul 1986, J.C. Cardale ( ANIC) ; 3 males, 12°44'S, 143°16'E, Claudie R., Iron Range National Park , 25 km NW Lockhart R., 10 Nov 1988, K. Walker ( NMV) ; 3 males, 21 females, Bertie Creek , 1 km SE Heathlands HS, 4 Feb 1992, D. Cartwright and A. Wells ( QM) ; 1 male, 19 females, Gunshot Creek at Telegraph Crossing, 18 Feb 1992, D. Cartwright and A. Wells ( QM) ; 4 males, 2 females, Kearney Falls , Goldsborough Valley, 26–27 Mar 1997, G. Theischinger and L. Muller ( ANIC, 1maleonslide) ; 7males,CapeYorkPeninsula, IronRange , Rainforest Camping Ground, 6 Oct 2002, G. Theischinger ( ANIC) .

Diagnosis. Wings with long downy hair and, as in O. burtoni and O. australis , male forewings lack scale patches. Males are distinguished by genitalic features (figs 43–45): shape of the inferior appendages which are stout and elongate in ventral aspect, in lateral view narrowly tapered apically and with a dorso-mesial expansion; and pre-anal lobes that are broadly almond-shaped. Male forewing length, 3.9–5.5 mm.

Distribution. Known in Australia only from far north-eastern Qld. Described from Bogor (= Buitenzorg), Java, and recorded subsequently from New Guinea ( Kimmins, 1962, from Kokoda, Papua New Guinea).

Remarks. Oecetis buitenzorgensis is one of several Oriental/New Guinean species recorded from far northern Queensland. Chen, 1992 placing O. buitenzorgensis with a group of Palaearctic and Oriental species (African, Indian and Thai), commented that it is a nomen dubium, not recognisable from Ulmerʼs illustrations. However, the north-eastern Australian specimens agree closely with Ulmerʼs figures, and conform well to other members of the pechana - group as recognised here.