Bigenditia millawa, PLATNICK, 2000

PLATNICK, NORMAN I., 2000, A Relimitation And Revision Of The Australasian Ground Spider Family Lamponidae (Araneae: Gnaphosoidea), Bulletin of the American Museum of Natural History 2000 (245), pp. 1-328 : 218-219

Bigenditia millawa , new species

Figures 530–533 ; Map 60

TYPE: Male holotype taken in drift fence pitfall trap 20.4 km N Millawa South Bore , 348359S, 1418039E, Victoria (Feb. 1987; A. Yen), deposited in NMVS .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: This eastern sister species of B. zuytdorp can easily be distinguished by the much narrower median apophysis of males (fig. 530) and the posteriorly narrower epigynum of females (fig. 532).

MALE: Total length 6.1. Coloration as in B. zuytdorp except femora not darkened, all legs orange. Leg spination: tibiae IV v1p­1p­ 2; metatarsi III v2­0­2. Retrolateral tibial apophysis angular (fig. 531), median apophysis relatively narrow (fig. 530).

FEMALE: Total length 7.3. Coloration as in male except abdominal dorsum with pair of paler patches anteriorly. Leg spination: tibiae IV v1p­1p­2; metatarsi III v2­0­2. Epigynal atrium not widened posteriorly (fig. 532); spermathecae extending far anterior of epigynal hood (fig. 533).

OTHER MATERIAL EXAMINED: New South Wales: Kinchega National Park, 328289S, 1428229E, Mar. 29 –30, 1984, pitfall (J. Smith, QMB), 1?. Northern Territory: Bullock Creek, Camfield Homestead , 178109S, 1318259E, Aug. 19–20, 1982 (I. Archibald, MNT), 1/; near Lambert Centre, Australian Centre marker, 258379S, 1348249E, Mar. 29, 1993 (D. Hirst, SAM N1996 /440), 1?. Queensland: Lake Broadwater , site 5, 278219S, 1518069E, Feb. 25–Apr. 22, 1986, pitfall (M. Bennie, QMB S34353 ), 1?; Windermere, near Glenmorgan , 278179S, 1498459E, July–Sept. 1991 (R. Raven, D. Smyth, QMB S30361 ), 2?. South Australia: 1 km W Blue Hills Bore, 278079S, 1328519E, Mar. 17, 1993, pitfall ( SAM N1996 /434), 1?; 7.89 km N Coongie , 278069S, 1408099E, May 7, 1987, pitfall (J. Reid, SAM N1996 /431), 1 ?; 9.42 km NNE Coongie , 278069S, 1408099E, Mar. 14, 1987 (J. Reid, SAM N1996 /341), 1?, May 7, 1987, pitfall (J. Reid, SAM N1996 /433), 1/; 10.9 km NNE Coongie , 278059S, 1408099E, May 7, 1987, pitfall (J. Reid, SAM N1996 / 432), 1/; Edwards Creek , 288209S, 1358519E, Mar. 16, 1993 (D. Hirst, SAM N1996 /429, 430), 2 ?; Katarapko Game Reserve, 348259S, 1408349E, May 28, 1991, pitfall (A. McArthur, SAM N1996 /428), 1/. Victoria: 7.5 km ENE Kingower , 368369S, 1438509E, Mar. 26–29, 1990, mallee (A. Coventry, NMV K4653 ), 2 /.

DISTRIBUTION: Eastern sister species of B. zuytdorp (map 60).

Figures

Map 60. Records of Bigenditia zuytdorp, new species (circles) and B. millawa, new species (squares).

Figs. 530–533. Bigenditia millawa, new species. 530. Left male palp, ventral view. 531. Same, retrolateral view. 532. Epigynum, ventral view. 533. Same, dorsal view.