Jamberoo australis, Gray & Smith, 2008

Gray, Michael R. & Smith, Helen M., 2008, A New Subfamily of Spiders with Grate-shaped Tapeta from Australia and Papua New Guinea (Araneae: Stiphidiidae: Borralinae), Records of the Australian Museum 60 (1), pp. 13-44: 31

publication ID

http://doi.org/ 10.3853/j.0067-1975.60.2008.1493

persistent identifier

http://treatment.plazi.org/id/038E4730-6E26-C151-E54C-A61AFC7A3823

treatment provided by

Felipe

scientific name

Jamberoo australis
status

n.sp.

Jamberoo australis   n.sp.

Figs 8a View Fig , 12a–e View Fig

Type material. Victoria: HOLOTYPE:?, KS46337, Box Corner , 4.5 km N of Mount Buller village, 37°09'S 146°27'E, 1000 m, 8 Apr.1978 (specimen matured 3 Jan. 1979), M.R. Gray GoogleMaps   . PARATYPES:?, KS46338, collected mature, otherwise data as holotype;!, KS77020, Box Corner, Mt Buller, 37°09'S 146°27'E, 16 Nov. 1982, M.R. Gray;?, KS77022, La La Falls , Warburton, 37°45'S 145°42'E, 13 Mar. 1954, A. Neboiss GoogleMaps   .

Other material. Victoria:?, KS46336, 7 km E of Mirimbah on Mount Stirling Road , 37°09'S 146°57'E, 8 Apr. 1978 GoogleMaps   , M.R. Gray, 920 m;!, KS46081, 3 km NE of Mirimbah , 37°07'S 146°56'E, 21 Apr. 2002 GoogleMaps   , M.R. Gray;!, KS34754, Sherbrooke Forest , 37°53'S 145°22'E, 19 Jan. 1955 GoogleMaps   .

Diagnosis. Differs from other species in having the lesser spine on the spiniform sclerotized lateral process of MA reduced to a spicule (not “claw-like”); and the epigynal fossa without a dividing septum.

Description

Male (holotype). BL 8.80, CL 4.12 (range 3.22–4.16), CW 2.84, CapW 1.71, EGW 1.14, LL 0.68, LW 0.61, SL

1.95, SW 1.62. Legs: 1243 (I: 19.73; II: 16.33; III: 13.40; IV: 15.40); ratio tibia I length:CW = 1:0.56. Sternum dark brown. Male palp ( Fig. 12a,b View Fig ). RVTA large, anvil shaped (lateral view). Cymbium apex short coniform. Cymbial flange very wide. Bulb wider than long. Prolateral margin of TL rounded, sometimes with a small thorn-like protuberance. Lateral process of MA slender spiniform, with secondary spine reduced to a spicule ( Fig. 12b View Fig ).

Female (KS77020) BL 8.41, CL 3.80 (range 3.80–4.29), CW 2.65, CapW 1.80, EGW 1.16, LL 0.65, LW 0.65, SL 1.88, SW 1.57. Legs: 1243 (I: 14.83; II: 12.67; III: 10.67; IV: 12.33); ratio tibia I length:CW = 1:0.71 Sternum dark brown. Epigynum ( Fig. 12c–e View Fig ). Fossa open, without median septum or posterior knob, longer than wide, narrowest anteriorly. Internal genitalia (KS46081) with short copulatory ducts and large spermathecae separated by about a third of spermatheca width.

Comments. All other Jamberoo species   have a divided epigynal fossa. Possession of an open fossa initially precluded placing the Mt Buller–Mirimbah males and females together. However, collecting has not revealed a second “striped” species in this region so that the male– female matching seems reliable. The midline area of the fossa rises ventrally from front to back, possibly reflecting a former or incipient division of the fossa.

Distribution. Southern Great Dividing Range, eastern Victoria.

Etymology. The name refers to the southern distribution of this species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Stiphidiidae

Genus

Jamberoo