Karaops yurlburr, Crews, Sarah C., 2013

Crews, Sarah C., 2013, Thirteen new species of the spider genus Karaops (Araneae: Selenopidae) from Western Australia, Zootaxa 3647 (3), pp. 443-469 : 452-454

Karaops yurlburr sp. nov.

( Figs 9–12 , 37 )

Type material. Holotype: female, 2.3 km ESE of Python Pool, SITE PW01 [21˚20’22.8” S 117˚15’36.3” E, Western Australia, Australia], 16 July 2003 – 11 October 2004, CALM PILBARA SURVEY, ethylene glycol pitfalls (WAM T79403).

Paratype: 1 male, same data as holotype, (WAM T79403).

Other material examined. AUSTRALIA: Western Australia: 2 penultimate males, 5 immatures, same data as holotype and paratype (WAM T79403).

Etymology. The specific epithet refers to the indigenous Yindjibarndi word for Python Pool, the type locality. Yindjibarndi is the language indigenous to the type locality. This name is to be treated as a noun in apposition.

Diagnosis. Females of K. yurlburr sp. nov. can be distinguished from all other species by the epigyne, which has a large medial depression, with the copulatory openings located laterally and the lateral lobes pointed posteriorly ( Figs 9–10 ). Males of K. yurlburr sp. nov. can be distinguished from all other species by having only 2 prolateral teeth and an RTA in which the dorsal branch is much longer than the ventral branch ( Figs 11–12 ).

Description. Female (holotype):

Colour. Dorsal shield of prosoma uniformly yellow-brown; sternum pale yellow-brown; chelicerae pale yellow with darker infuscations anteriorly; maxillae pale yellow; labium pale brown, lightening distally; opisthosoma dorsally yellow-brown with darker markings; ventrally pale yellow-brown; legs yellow brown with darker annulations, legs darkening distally.

Prosoma. 0.90 times longer than broad; clypeus 0.18 high.

Eyes. AER slightly recurved; PER recurved; PME larger than AME, PLE largest, ALE smallest; eye group width 1.23; eye diameters, AME 0.20, ALE 0.11, PME 0.29, PLE 0.36; interdistances AME-ALE 0.38, PME-PLE 0.36, ALE-PLE 0.25, AME-PME 0.02; ocular quadrangle AME-AME 0.13, PME-PME 0.45.

Sternum. 0.80 times longer than broad.

Chelicerae. Promargin with 3 teeth, retromargin with 2 teeth.

Female pedipalp. Claw with ca. 6 teeth.

Epigyne ( Fig. 9 ). Lateral lobes distinct, nearly touching posteriorly; medially, epigynal plate with large depression, rounded anteriorly, undulate posteriorly; copulatory openings located laterally.

Vulva ( Fig. 10 ). Medially projecting v-shaped area; large copulatory ducts extending posterolaterally to elongate spermathecae, directed anteriorly; a second, smaller pair of spermathecae located at the junction between the copulatory ducts and the larger pair of spermathecae; fertilisation ducts directed anterolaterally, small posterodorsal fold present.

Opisthosoma. Unclear if caudal setal tufts are present because the opisthosoma is damaged.

Legs. Leg I slightly shorter than II and III; leg formula unknown (at least one leg missing); leg III longest; tarsal claws without teeth; spination: leg I, Fm pr 1-1-1, d 1-1-1, rl 0; Ti d 0, v 2-2 -2-2-2; Mt v 2-2 -2-2; leg II, Fm pr 0-0-1, d 1-1-1, rl 0; Ti v 2-2 -2-2-2; Mt v 2-2 -2-2; leg III, Fm pr 0-0-1, d 1-1-1, rl 0; Ti v 1-1 -0; Mt v 2 -0.

Measurements. Total length 8.34. Dorsal shield of prosoma length 3.20, width 3.56. Sternum length 1.36, width 1.70. Opisthosoma length 5.14, width 3.90. Pedipalp: Fm 0.89, Pt 0.55, Ti 0.63, Ta 0.71, (total) 2.78. Leg I: Fm 3.25, Pt 1.30, Ti 2.93, Mt 2.39, Ta 1.09, (total) 10.96. Leg II: Fm 4.05, Pt 1.32, tibia 3.11, Mt 2.68, Ta 1.16, (total) 12.32. Leg III: Fm 4.42, Pt 1.46, Ti 3.08, Mt 2.93, Ta 1.29, (total) 13.18. Leg IV: Absent.

Male (from 21˚20’22.8” S 117˚15’36.3” E, 2.3 km ESE of Python Pool, SITE PW01, Western Australia, Australia; WAM T79403):

Colour. Dorsal shield of prosoma uniformly yellow-brown; sternum pale yellow-brown; chelicerae yellowbrown; maxillae pale yellow-brown; opisthosoma missing; legs yellow-brown, annulations not visible.

Prosoma. 0.92 times longer than broad; clypeus 0.18 high.

Eyes. AER slightly recurved; PER recurved; PME larger than AME, PLE largest, ALE smallest; eye group width 1.25; eye diameters, AME 0.20, ALE 0.09, PME 0.25, PLE 0.36; interdistances AME-ALE 0.29, PME-PLE 0.29, ALE-PLE 0.34, AME-PME 0.02; ocular quadrangle AME-AME 0.13, PME-PME 0.41.

Sternum. 0.65 times longer than broad.

Chelicerae. Promargin with 2 teeth, retromargin with 1 tooth.

Pedipalp. ( Figs 11–12 ). Fm, spination d 0–0–1; RTA with 2 apophyses, dorsal apophysis much longer than the ventral apophysis, long, narrow, curved ventrally, rounded at tip; ventral apophysis approximately a third of the length of dorsal apophysis, small, quadrate; two apophyses connected by thin keel; cymbium round to triangular; conductor large, pointed laterally, with finger-like process directed ventrally; embolus long and slender, arising from large tegular lobe, tapering abruptly, beginning at 7 o'clock, terminating at 1 o'clock; MA with wide base, with single process tapering to a pointed, hooked tip, directed anteriorly.

Opisthosoma. Missing.

Legs. Leg I much shorter than legs II, III and IV; leg formula 3241; leg III longest; tarsal claws without teeth; spination: leg I, Fm pr 1-1-0, d 1-1-1, rl 1-1-1; Ti d 0, v 2-2 -2-2-2; Mt v 2-2 -2-2; leg II, Fm pr 1-1-1, d 1-1-1, rl 1- 1-1; Ti v 2-2 -2-2-2; Mt v 2-2 -2-2; leg III, Fm pr 1-1-1, d 1-1-1, rl 1-1-1; Ti 2-2-2; Mt 2-0; leg IV, Fm pr 0-1-1, d 1- 1-1, rl 0-1-1; Ti v 2-2; Mt v 2 -0-0.

Measurements. Dorsal shield of prosoma length 2.96, width 3.21. Sternum length 0.96, width 1.48. Pedipalp: Fm 0.96, Pt 0.48, Ti 0.45, Ta 0.93, (total) 2.82. Leg I: Fm 3.56, Pt 1.43, Ti 3.51, Mt 3.46, Ta 1.25, (total) 13.21. Leg II: Fm 4.73, Pt 1.50, Ti 4.10, Mt 4.14, Ta 1.70, (total) 16.17. Leg III: Fm 4.86, Pt 1.46, Ti 4.29, Mt 4.00, Ta 1.67, (total) 16.28. Leg IV: Fm 4.68, Pt 1.25, Ti 3.76, Mt 4.39, Ta 1.63, (total) 15.71.

Distribution. Known only from the type locality ( Fig. 37 ).

Life history and habitat preferences. Unknown.

Remarks. Colours and patterns may not be typical because of collection in ethylene glycol.

Figures

FIGURE 37. Map of Australia. Inset A showing the Pilbara region of Western Australia with the records of Karaops nyiyaparli sp. nov. (black squares), Karaops banyjima sp. nov. (black hexagon), Karaops nyamal sp. nov. (black triangle), Karaops feedtime sp. nov. (white diamond), Karaops kariyarra sp. nov. (white stars), Karaops nyangumarta sp. nov. (white Xs), Karaops yurlburr sp. nov. (white triangle), Karaops ngarluma sp. nov. (black stars), Karaops yindjibarndi sp. nov. (black diamond), Karaops jaburrara sp. nov. (black X), Karaops forteyi sp. nov. (white rhomboids), Karaops burbidgei (white square), Karaops martamarta (white circles); Inset B showing the records of Karaops umiida sp. nov. (black circles); Inset C showing eastern Western Australia and western Northern Territory with the records of Karaops yumbu sp. nov. (white hexagon).

FIGURES 9 – 14. Karaops yurlburr sp. nov. 9 epigyne; 10 vulva; 11 – 12 left pedipalp (11 ventral, 12 retrolateral view). Karaops feedtime sp. nov. 13 epigyne; 14 vulva. Scales: 0.50 mm.