Karaops yumbu, 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 : 467

Karaops yumbu sp. nov.

( Figs 35–37 )

Type material. Holotype: male, c. 280 km S of Lake Argyle [18°54’36.1” S 128°55’24” E, Western Australia, Australia], 15 January 2012 – 16 March 2012, A. Slabber (Browns Range—Site 10–97), wet pitfall, sand plain (WAM T123210).

Paratype: 1 male, c. 280 km S of Lake Argyle [18°54’4.3” S 128°55’31.7” E, Western Australia, Australia], 15 January 2012 – 16 March 2012, A. Slabber (Browns Range—Site 10–97), wet pitfall, stony rise (WAM T123209).

Etymology. The specific epithet comes from the Jaru word for spider, yumbu , in the indigenous language of the type locality. This name is to be treated as a noun in apposition.

Diagnosis. Males of Karaops yumbu sp. nov. can be differentiated from all other species by having an MA that arises from the distal end of an unsclerotised, retromedially-oriented extension of the tegulum ( Figs 35–36 ). Females are unknown.

Description. Male (holotype):

Colour. Dorsal shield of prosoma uniformly yellow-brown; sternum pale yellow; chelicerae pale yellow with darker infuscations anteriorly; maxillae brown, lightening distally; labium pale yellow-brown, lightening distally; opisthosoma grey-brown with darker marks; ventrally pale yellow; legs yellow-brown to brown, annulations present on all legs, those on femora with hollow centres, not entirely encircling femora.

Prosoma. 0.89 times longer than broad; clypeus 0.13 high.

Eyes. AER slightly recurved; PER recurved; PME larger than AME, PLE larges, ALE smallest, eye group width 1.00; eye diameters AME 0.18, ALE 0.09, PME 0.20, PLE 0.27; interdistances AME-ALE 0.25, PME-PLE 0.20, ALE-PLE 0.13, AME-PME 0.02; ocular quadrangle AME-AME 0.13; PME-PME 0.45.

Sternum. 0.90 times longer than broad.

Chelicerae. Promargin with 4 teeth, retromargin with 3 teeth.

Pedipalp ( Figs 35–36 ). Fm spination 0-1-2; RTA with 2 apophyses, dorsal apophysis much longer than ventral apophysis, in lateral view sinuous, curved ventrally, then dorsally, then ventrally, pointed at tip, ventral apophysis rectangular, directed ventrally, RTA with excavation dorsally where it connects to pedipalpal tibia; cymbium round; conductor large, crescent-shaped, projecting ventrally at tip; embolus very long and slender, arising at 3 o’clock from behind tegular extension, extending beyond proximal margin of cymbium, then curving around the edge of cymbium, passing the 3 o’clock starting point and ending at 5 o’clock; MA very small, arising from the distal end of an unsclerotised, retromedially-oriented extension of the tegulum, sclerotised, at tip, slightly hooked distally, directed proximally.

Opisthosoma. Possible setal tufts, but setae are worn off.

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

Measurements. Total length 4.82. Dorsal shield of prosoma length 2.32, width 2.64. Sternum length 1.27, width 1.41. Opisthosoma length 2.50, width 2.29. Pedipalp: Fm 0.79, Pt 0.39, Ti 0.32, Ta 1.00, (total) 2.50. Leg I: Fm 2.64, Pt 1.31, Ti 2.50, Mt 2.14, Ta 1.16, (total) 9.57. Leg II: Fm 3.66, Pt 1.14, Ti 2.86, Mt 2.61,Ta 1.30, (total) 11.57. Leg III: Fm 4.00, Pt 1.07, Ti 3.21, Mt 2.86, Ta 1.32, (total) 12.46. Leg IV: missing.

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

Life history and habitat preferences. Sandy and rocky areas.

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 31 – 36. Karaops nyamal sp. nov. 31 epigyne; 32 vulva. Karaops banyjima sp. nov. 33 epigyne; 34 vulva. Karaops yumbu sp. nov. 35 – 36 left pedipalp (35 ventral, 36 retrolateral view). Scales: 0.50 mm.