Servaea spinibarbis Simon, 1909

Richardson, Barry J. & Gunter, Nicole L., 2012, Revision of Australian jumping spider genus Servaea Simon 1887 (Aranaea: Salticidae) including use of DNA sequence data and predicted distributions, Zootaxa 3350, pp. 1-33 : 23-26

Servaea spinibarbis Simon, 1909

Figs 39–45

Servaea spinibarbis Simon, 1909: 204 , Platnick 2012 unpaginated.

Remarks. All the type specimens examined are juveniles, though one specimen, given as male, is subadult rather than adult and palp characters are not present. The length of P1+T 1 in this specimen is consistent with other more recent material from coastal Western Australia, and not consistent with S. melaina

Type material. Syntypes: 3 imm. Station 115 North Fremantle 115.5°E, 32.05°S, ( ZMH, BJR 1186); 4 imm. Station 109, Subiaco; Station 144, Buckland Hill near North Freemantle; Station 116, East Fremantle Recreation Ground; ( ZMHB 19473, 19474, 19475,19473a).

Other material examined. WESTERN AUSTRALIA: 1F, Gum Tree Bay, 114.97°E, 29.78°S, 23 Jul, 1995, R.P. McMillan, ( WAM T66905, BJR 469); 1F, Gum Tree Bay, 114.97°E, 29.78°S, 10 Oct, 1994, R.P. McMillan, ( WAM T66906, BJR 470).1F, Darlington, 116.07°E, 31.92°S, Mar, 1975, G.H. Lowe, ( WAM T66957, BJR 481); 1F, Darlington, 116.07°E, 31.92°S, Mar, 1975, G.H. Lowe, ( WAM T66957, BJR 481); 1F, Darlington, 116.07°E, 31.92°S, Nov, 1968, G.H. Lowe, ( WAM T66956, BJR 487); 1F,Darlington, 116.07°E, 31.92°S, Nov, 1968, G.H. Lowe, ( WAM T66956, BJR 487); 1F, Bold Park, 115.77°E, 31.95°S, 2 Nov, 1991, R.P. McMillan, ( WAM T66897, BJR 466); 1F, Mosman Park, 115.77°E, 32.02°S, 20 Sep, 1992, C.A. Car, ( WAM T66914, BJR 446); 1F, Parmelia, 115.82°E, 32.25°S, 15 Oct, 2001, A.E. de Jong, ( WAM T66931, BJR 453); 1F, Parmelia, 115.82°E, 32.25°S, 5 Jan, 1987, A.E. de Jong, ( WAM T66926, BJR 454);. 1M, Leeuwin Swamp, Leeuwin-Naturaliste National Park, W.A., 115.08°E, 33.87°S, 19 August 2000, J. Waldock, G. Kendrick, P. Vinnnicombe, S. Sack-Smith, ( BJR 444, WAM T66909). 1F, Boranup Hill, 115.03°E, 34.15°S, 17 Feb, 1977, S.J. Curry, ( WAM, T66898, BJR 450); 1M, Scott Rd, D’Entrecasteau National Park, W.A., 115.74°E, 34.43°S, 6–13 November 2003, Malaise Bulk Sample, Casuarina- Jarrah woodland, C. Lambkin, J. Recsei, ( ANIC 42 0 0 0 281, BJR 418). 1F, Denmark, 117.35°E, 34.97°S, 30 Nov, 1987, B. and M. Baehr, (QM, S 73111 , BJR 940).

Diagnosis. It can be differentiated from S. incana , S. villosa and S. zabkai as fertilization duct is large and long and is visible externally as a deep red mass in the centre of the fossa and by the presence of a median gap between the right and left insemination ducts. It differs from S. narraweena in that the insemination duct crosses the middle of the epigynum and enters the spermatheca on the anterior edge. It can be differentiated from S. melaina as the chelicerae are light brown rather than black or dark brown, L1 is short (male P1+T1 less than 80% of CL) rather than long (male P1+T1 more than 90% of CL), the bulb is wider than the palp and the accessory gland is terminally or sub-terminally placed on the insemination duct. It is generally light brown/fawn in colour and males show female abdominal pattern rather than the male narrow stripe seen in other species. There is only a small anterior tooth projection on the brown chelicera.

Description. Male: Cephalothorax orange with scattered pennate grey hairs over dorsal surface and lateral margins. Integument surrounding ALE, PME and PLE, black with covering of grey hairs. Clypeus narrow, with long sparse fringe of grey hairs. Chelicerae geniculate, tan. A blunt protuberance, projecting forwards off a tubercle on the anterior face of each chelicera, three large promarginal teeth on a single base and one large straight fissident retromarginal tooth. Endites tan grading to yellow with a rounded distal edge. Labium tan and sternum light brown. Abdomen with a central anterior cleft, light brown with dark brown mid line pattern, scattered spots and edges. Ventral abdomen same colour as dorsal surface of the abdomen. Spinnerets light brown. L1 and L2 more robust than L3 and L4. L1 and L2, femur, patella, tibia, metatarsus and tarsus mid brown with fringing on patella and tibia. Other legs pale yellow without fringing. All femora with three transverse darker stripes. Palp: brown, tibia with single slender apophysis. Tegulum relatively long and narrow without anterior lateral lobe but with a proximal lobe, bulb as wide or wider than the cymbium, origin of the embolus distal, forming a tapering single-turn anticlockwise spiral around the bulb. Dimensions: CL 2.41±0.06 (2), EFL 1.05±0.06 (2), CW 1.92 (1), AEW 1.76±0.03 (2), AMEW 0.96±0.03 (2), PEW 1.55±0.06 (2), AL 2.48 (1), P1+T1 1.89±0.09 (2).

Female. Cephalothorax orange with scattered pennate grey hairs over lateral surfaces. Integument surrounding ALE, PME and PLE, black with partial covering of grey hairs. Clypeus narrow with long sparse fringe of grey hairs. Chelicerae geniculate, tan. Fang narrow in distal half. Chelicera with no protuberance projecting forwards off the anterior face, three promarginal teeth on a single base and one large straight fissident retromarginal tooth. Endites tan grading to yellow with a rounded distal edge. Labium tan grading to yellow and sternum light brown. Abdomen with a central anterior cleft, fawn with darker brown mid line pattern, scattered spots and edges. Many specimens with a large ginger ring of hairs on either side. Ventral abdomen same colour as dorsal surface of the abdomen. Spinnerets light brown. Palp yellow grading to mid brown. L1 and L2 slightly more robust than L3 and L4. L1 and L2, femur, patella, tibia, metatarsus and tarsus mid brown with sparse fringing on patella and tibia. Other legs pale yellow without fringing. All femora with three transverse darker stripes and transverse darker brown bands on the other segments. Epigynum: Indistinct fossae and a well sclerotised margin. A distinct brown patch varying in shape is found in the middle of each side. Guides and copulatory openings indistinct. Accessory gland either terminal or sub-terminal, on the dorsal surface of the insemination duct. Insemination duct passes laterally across the middle of the fossa to the mid line and then move posteriorly until entering the spermathecae on the anterior mid line. Spermatheca small, rounded and within the margin of the epigynum but at the posterior edge. Right and left spermatheca and insemination ducts touching. The fertilization duct is large and red in colour, arising from the dorsal anterior edge of the spermatheca, passing under the ventral edge of the insemination duct and then curving dorsally in an incomplete circle. Dimensions: CL 2.58±0.05 (11) (2.23–2.79), EFL 1.13±0.03 (11) (0.99– 1.30), CW 2.14±0.04 (11) (1.86–2.35), AEW 1.84±0.03 (11) (1.61–1.98), AMEW 1.05±0.02 (11) (0.93–1.11), PEW 1.94±0.03 (11) (1.73–2.04), AL 2.48, P1+T1 1.93±0.05 (11) (1.61–2.17).

Distribution and biology. Found in sand areas of the coastal regions of temperate southwestern Australia ( Fig. 46 ). Found under bark in eucalypt forest and woodlands. Likely IUCN Red List Category LC.

Figures

FIGURES 39 – 46. Servaea spinibarbis. 39 – 40 dorsal view (39 female, 40 male); 41 – 42 female genitalia (41 dorsal view of cleared specimen, 42 ventral view of external characteristics); 43 – 45 male palp (43 ventral view, 44 anterior lateral view, 45 posterior lateral view); 46 known and predicted distribution. Scale: total body 1 mm; remainder 0.2 mm.