The long-horned caddisfly genus Oecetis (Trichoptera: Leptoceridae) in Australia: two new species groups and 17 new species Wells, Alice Memoirs of Museum Victoria 2004 2004-12-31 61 1 85 110 Wells 2004 [817,979,347,369] Insecta Leptoceridae Oecetis Animalia Trichoptera 20 105 Arthropoda species digitata sp. nov.   Material examined.  Holotype, male, NT, Jim Jim Waterhole, Kakadu National Park, 5 Sepember 1979, J. Blyth( NMVT-18522).  Paratypes. NT:  7 males, 3 females, Muirella Park,  12 Oct 1972, E.F. Riek( ANIC); male, 12°06'S 133°04'E, 19 kmE by S of Mt Borrodaile,  5–6 Jun 1973, J.C. Cardale( ANIC); male, Jim Jim Creek,  19 kmWSW of Mt Cahill, 12°5'S 132°33'E,  17 Jun 1973, J. Cardale( ANIC);  1 male, 1 female, Gulungul Billabong, East Jabiru,  23 Feb 1988, P. Dostine( NTM);  1 male, 12°38'S 132°53'E, Gulungul Billabong, East Jabiru,  20 May 1989, A. Wellsand P. Suter( NTM);  1 male, ARRS, South Alligator Riverat GimbatOSS Station, 13°34.3'S 132°36.7'E,  24 May 1988, A. Wellsand P. Suter( NTM);  3 males, ARRS, Kambolgie Creek, 13°28.9'S 132°22.0'E,  25 May 1988, A. Wellsand P. Suter( ANIC);  1 male, ARRS, East Alligator Riverat Cahills Crossing,  27 May 1988, A. Wellsand P. Suter( NTM);  2 males, SAR site 1,  30 Sep 1988, P. Dostine( NTM);  5 males, 12°48'S 132°49'E, Baroalba Springs,  25 Apr 1991, Wellsand Webber( NMV);  1 male, 12°42'S 132°57'E, Kakadu National Park, Magela Creek, OSS Site009,  8 Jun 1991, Wellsand Webber( NTM);  1 male, 12°48'S 132°49'E, Little Baroalba Creek,  10 Jul 1991, Wellsand Webber( NTM);  5 males, female, Alligator River, Two Mile Hole, 12°42'S 132°09'E,  5 Aug 1996, I Edwards( NMV). Other material. WA: Kimberley, Four Mile Creek,  2 Feb 1979, J.E. Bishop( ANIC) (slide); male, female, 14°25'S 126°38'E, CALM site 13/H 12 kmS of Kalumburu Mission,  7–11 Jun 1988, T.A. Weir( ANIC);  5 males, female, NT, Alligator RiverTwo Mile Hole, 12°42'S 132°09'E,  5 Aug 1996, I. Edwards, NMV. Qld: female, Palmer River,  20 Jun 1971, E.F. Riek( ANIC); male, 15°41'S 145°12'E, Annan River, 3 kmW by S Black Mountain,  17 Sep 1980, J.C. Cardale( ANIC); male, 4 females, 15°25'S 141°53'E, Hann River, 7 kmNW by W Laura,  27 Jun 1986, J.C. Cardale( ANIC). NT: male, 12°57'S 132°33'E, Jim Jim Creek,  19 kmWSW of Mt Cahill,  17 Jun 1973, J.C. Cardale, ANIC; female, Howard Creek,  3 kmE of Howard Springs, 12°27.5'S 131°3.1'E,  17 Aug 1979, J. Blyth( NMV);  1 female, Magela Creekat Rangerpipe outlet,  20 May 1988, P. Suterand A. Wells( NTM); female, Magela Creekat Ranger Pipe Outlet, Suterand Wells,  23 May 1988( NMV).  Diagnosis. Forewing length less than 4 times width, veins sclerotised, appear very prominent,footstalk absent on fork 1; an unusual forward bulge present at base of vein Cu1a. In male genitalia, inferior appendages with mesial margin irregular, not smoothly curved; phallus smoothly arched, length about 4 times width.  Description. Spurs 1, 2, 2. Male forewing length 6.6–8.1 mm. Wings strongly sclerotised with veins dark, hair short; in forewing (Fig. 91) fork 1 sessile, anterior anastomosis with t1 and t2 almost linear, and well distad of t3, a forwardly directed bulge on Cu1a. Male genitalia, Figs 92, 93. Segment IX almost of uniform length on all sides, but excavated deeply midventrally; preanal appendages slender, elongate. Segment X elongate in lateral view, slightly swollen towards base. Inferior appendages in ventral view with small inner lobe at about half length. Phallus,curved, slender with length about 4 times width.  Figures 91–93,  Oecetis digitata sp. nov.: 91, forewing; 92, 93, male genitalia, ventral and lateral views. Figure 94,  O. crosslandi sp. nov., forewing. Figures 95–97,  O. ancala sp. nov., male genitalia, ventral, dorsal and lateral views. Figures 98–100,  O. crosslandi sp. nov., male genitalia, ventral, dorsal and lateral views.  Distribution. Qld, NT, Kimberley Region of northern WA (Fig. 129).  Remarks. Several of the New Guinean  Oecetisspeciesresemble  O. digitatain having broad wings with bold or prominent venation, and may be allied to this species. However, none has Cu1a as in  O. digitataand  O. ancala sp. nov.  Etymology. Latin,  digitata— having fingers, for the finger-like appearance of the male genitalia in lateral view. NMV J. Blyth Kakadu National Park 20 105 1 holotype 1972-10-12 ANIC E. F. Riek Muirella Park 20 105 10 3 7 paratype 1973-06-05 1973-06-06 1973-06-05 ANIC J. C. Cardale -12.1 Mt Borrodaile 1293 133.06667 20 105 1 paratype 1973-06-17 ANIC J. Cardale -12.083333 Jim Jim Creek 1294 132.55 20 105 1 paratype 1988-02-23 NTM P. Dostine Gulungul Billabong East Jabiru 20 105 2 1 1 paratype 1989-05-20 NTM A. Wells & P. Suter -12.633333 Gulungul Billabong 1293 132.88333 East Jabiru 20 105 1 1 paratype 1988-05-24 NTM A. Wells & P. Suter Station -13.571667 South Alligator River 128 132.61166 Gimbat 20 105 1 1 paratype 1988-05-25 ANIC A. Wells & P. Suter -13.481667 Kambolgie Creek 128 132.36667 20 105 3 3 paratype 1988-05-27 NTM A. Wells & P. Suter East Alligator River Cahills Crossing 20 105 1 1 paratype 1988-09-30 NTM Dostine 20 105 2 2 paratype 1991-04-25 NMV Wells & Webber -12.8 Baroalba Springs 1292 132.81667 20 105 5 5 paratype 1991-06-08 NTM Wells & Webber Site -12.7 Kakadu National Park 1292 132.95 Magela Creek 20 105 1 1 paratype 1991-07-10 NTM Wells & Webber -12.8 Little Baroalba Creek 1292 132.81667 20 105 1 1 paratype 1996-08-05 NMV I Edwards -12.7 Alligator River 1292 132.15 Two Mile Hole 20 105 5 5 paratype 1979-02-02 ANIC J. E. Bishop Kimberley Four Mile Creek 20 105 1 1988-06-07 1988-06-11 1988-06-07 ANIC T. A. Weir -14.416667 Kalumburu Mission 1288 126.63333 20 105 1 1971-06-20 1996-08-05 1971-06-20 ANIC I. Edwards & Qld & E. F. Riek -12.7 Alligator River 1292 132.15 Palmer River 20 105 5 5 1980-09-17 ANIC S Black Mountain & J. C. Cardale -15.683333 Annan River 1284 145.2 20 105 1 1986-06-27 ANIC J. C. Cardale -15.416667 Hann River 1285 141.88333 Laura 20 105 4 4 1973-06-17 J. C. Cardale -12.95 Jim Jim Creek 1291 132.55 20 105 1 1979-08-17 NMV J. Blyth -12.458333 Howard Creek 129 131.05167 20 105 1 1988-05-20 NTM P. Suter & A. Wells Magela Creek Ranger 20 105 1 1 1988-05-23 NMV Wells Magela Creek Suter 20 105 1