Karaops umiida Crews, 2013, sp. nov.
Creators: name: Crews, Sarah C.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Selenopidae
Karaops
Karaops umiida

description: Karaops umiida sp. nov.
(Figs 1–4, 37)
Type material. Holotype: female, Irvine Island, 134 km north of Derby [16˚5’48” S 123˚33’13” E, Western Australia, Australia], 17 July 2010, R. Teale, M. Greenham, opportunistic collection (WAM T 110393).
Paratypes: 2 males, Margaret Island, 127 km north of Derby [16˚9’12” S 123˚34’42” E, Western Australia, Australia], 18 July 2010, R. Teale, M. Greenham, opportunistic collection (WAM T 110400, T 110401).
Other material examined. AUSTRALIA: Western Australia: 1 immature, Irvine Island, 135 km north of Derby, 16˚5’0” S 123˚32’28” E, 20 July 2010, R. Teale, M. Greenham, opportunistic collection (WAM T 110402).
Etymology. The specific epithet refers to the Umiida language that was spoken by the indigenous people of the region where this species is found. This name is to be treated as a noun in apposition.
Diagnosis. Females of K. umiida sp. nov. are most similar to K. jenniferae but can be differentiated by characters of the epigyne. In K. umiida sp. nov., the lateral lobes of the epigyne are fused before reaching the posterior margin of the u-shaped median field, and the median field is located more centrally on the epigynal plate (Figs 1–2). Males of K. umiida sp. nov. can be differentiated from other species of Karaops by nearly equal-sized dRTA and vRTA, the embolus is not curved around the edge of the cymbium but is located more medially, beginning at 6 o’clock and ending at 12 o’clock, the MA is not in contact with the tegular lobe, and the conductor has a small hook distally (Figs 3–4).
Description. Female (holotype):
Colour. Dorsal shield of prosoma yellow-brown, with slightly darker marks laterally; sternum pale yellow; chelicerae pale yellow with darker infuscations anteriorly; maxillae pale yellow-brown, lightening distally; labium pale yellow-brown, lightening distally; opisthosoma dorsally yellow-brown with reddish-brown and dark setae, black horizontal w-shaped marks medially, black flecks laterally; ventrally pale yellow-brown; legs with all segments clearly annulated.
Prosoma. Dorsal shield of prosoma flattened; 0.85 times longer than broad, clypeus 0.14 high.
Eyes. AER slightly recurved; PER recurved; PME larger than AME, PLE largest, ALE smallest; eye group width 1.63; eye diameters, AME 0.20, ALE 0.16, PME 0.30, PLE 0.41; interdistances AME-ALE 0.45, PME-PLE 0.36, ALE-PLE 0.21, AME-PME 0.04; ocular quadrangle AME-AME 0.55, PME-PME 1.16.
Sternum. 0.89 times longer than broad.
Chelicerae. Promargin with 3 teeth, retromargin with 2 teeth.
Female pedipalp. Claw with ca. 11 long, narrow teeth and 1 short, triangular tooth located more distally than the others.
Epigyne (Fig. 1). Lateral lobes surround a small u-shaped median field centrally located on the epigynal plate; lateral lobes fused before reaching posterior margin of median field.
Vulva (Fig. 2). One large copulatory opening that branches posterolaterally into short copulatory ducts that lead to laterally-located ovoid spermathecae; fertilisation ducts located posteriorly, directed posterolaterally; posterodorsal fold absent.
Opisthosoma. Caudal setal tufts present.
Legs. Leg I only slightly 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 0; Ti d 0, v 2-2 -2-2-2; Mt v 2-2 -2; leg II, Fm pr 0, d 1-1-1, rl 0; Ti v 2-2 -2-2-2; Mt v 2-2 -2; leg III, Fm pr 0, d 1-1-1, rl 0; Ti 1-0-0; Mt v 1 -0; leg IV, Fm R pr 0; d 1-1-1; rl 0; L pr 0, d 1- 1-1-1, rl 0; Ti 0; Mt 0.
Measurements. Total length 7.32. Dorsal shield of prosoma length 3.56, width 4.05. Sternum length 1.93, width 2.15. Opisthosoma length 3.75, width 3.66. Pedipalp: Fm 1.05, Pt 0.68, Ti 0.63, Ta 0.61, (total) 2.97. Leg I: Fm 3.95, Pt 1.73, Ti 3.96, Mt 2.92, Ta 1.32, (total) 13.88. Leg II: Fm 4.44, Pt 1.79, Ti 4.44, Mt 3.37, Ta 1.43, (total) 15.47. Leg III: Fm 5.07, Pt 1.71, Ti 4.49, Mt 3.71, Ta 1.45, (total) 16.43. Leg IV: Fm 4.93, Pt 1.45, Ti 3.95, Mt 3.51, Ta 1.43, (total) 15.27.
Male (from 16˚9’12” S 123˚34’42” E, Margaret Island, 127 km north of Derby, Western Australia, Australia; WAM T 110401):
Colour. Dorsal shield of prosoma uniformly yellow-brown; sternum pale yellow; chelicerae pale yellow with darker infuscations anteriorly; maxillae pale yellow; labium pale yellow-brown, lightening distally; opisthosoma dorsally yellow-brown, anteriorly red-brown, posteriorly and laterally with dark marks; ventrally pale yellow; legs pale yellow-brown with annulations on all segments of legs I and II except tarsi; annulations do not completely encircle femora; legs III and IV without annulations.
Prosoma. Dorsal shield of prosoma flattened; 0.87 times longer than broad; clypeus 0.09 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 0.16, PME 0.25, PLE 0.36; interdistances AME-ALE 0.30, PME-PLE 0.23, ALE-PLE 0.20, AME-PME 0.04; ocular quadrangle AME-AME 0.41, PME-PME 0.93.
Sternum. 0.86 times longer than broad.
Chelicerae. Promargin with 3 teeth, retromargin with 2 teeth.
Pedipalp (Figs 3–4). Fm spination d 0–1–2; RTA with 2 apophyses, roughly of similar length; dorsal apophysis slightly curved ventrally, pointed distally; ventral apophysis rounded distally; cymbium oval to triangular, slightly angled posterolaterally; conductor irregularly-shaped, distally with pointed, small process such as a small hook or claw; embolus long and slender, sickle-shaped, beginning at 6 o'clock, gently curving and terminating at 12 o'clock, not following the perimeter of the cymbium, but located more medially; MA with single process, lightly sclerotised, long, curved, proximally wide, narrowing distally to a wide, flat process at tip, directed anterolaterally.
Opisthosoma. Caudal setal tufts present.
Legs. Leg I much shorter than leg II but only slightly shorter than leg III; leg formula 2413; leg II longest; claws without teeth; spination: leg I, Fm pr 1-1-0, d 1-1-1, rl 0; Ti d 0, v 2-2 -2-2-2; Mt v 2-2 -2; leg II, Fm pr 0, d, 1- 1-1, rl 0-1-0; Ti v 2-2 -2-2-2; Mt v 2-2 -2; leg III, Fm pr 0, d 1-1-1, rl 0-1-1; Ti 0; Mt 0; leg IV, Fm pr 0, d 1-1-1, rl 0- 0-1; Ti 0; Mt 0.
Measurements. Total length 5.43. Dorsal shield of prosoma length 2.86, width 3.29. Sternum length 1.52, width 1.77. Opisthosoma length 2.57, width 2.64. Pedipalp: Fm 1.02, Pt 0.55, Ti 0.54, Ta 0.91, (total) 3.02. Leg I: Fm 3.85, Pt 1.41, Ti 3.54, Mt 2.93, Ta 1.50, (total) 13.23. Leg II: Fm 4.83, Pt 1.52, Ti 4.20, Mt 3.85, Ta 1.46, (total) 15.86. Leg III: Fm 3.75, Pt 0.96, Ti 3.36, Mt 2.93, Ta 1.34, (total) 12.34. Leg IV: Fm 4.15, Pt 1.16, Ti 3.61, Mt 3.07, Ta 1.30, (total) 13.29.
Distribution. Known only from Irvine Island and Margaret Island (Fig. 37).
Life history and habitat preferences. Found under rocks during the day, on boulder scree between open deciduous forests.
Remarks. The spination differs between the left and right femora of leg IV of the female and between the left and right leg I of one of the males. Because of the overall appearance of the legs with fewer spines, it is likely that they were lost and have recently re-grown. The juvenile was assigned to this species based on somatic morphology and collecting locality.
description: Published as part of Crews, Sarah C., 2013, Thirteen new species of the spider genus Karaops (Araneae: Selenopidae) from Western Australia, pp. 443-469 in Zootaxa 3647 (3) on pages 447-450, DOI: 10.11646/zootaxa.3647.3.3, http://zenodo.org/record/218404