Selenops arikok, Crews, Sarah C., 2011

Crews, Sarah C., 2011, A revision of the spider genus Selenops Latreille, 1819 (Arachnida, Araneae, Selenopidae) in North America, Central America and the Caribbean, ZooKeys 105, pp. 1-182 : 9-10

Selenops arikok sp. n. Figs 1-2177Map 1

Type material.

Holotype female: near Gran Tonel in valley Rooi Coashati, Arikok National Park, Aruba, 12°29.356'N, 69°55.461'W, ~96 m, 16.X.2004, S. Crews, F. Franken, under bark, SCC04_045, (EME sel_068).

Other material examined.

ARUBA: Bringamosa, house of R. Croes, 12°29.547'N, 69°58.077'W, 14.X.2004, S. Crews, under rocks, with egg sacs, SCC04_041, 1♀, 1 imm. (CAS sel_069-070); Luela, shooting range, 12°29.023'N, 69°57.778'W, ~30 m, 15.X.2004, S. Crews, under piece of wood, SCC04_044, 1 imm. (EME sel_072).

Etymology.

The specific epithet refers to the type locality, Arikok National Park, and should be treated as a noun in apposition.

Diagnosis.

This species is most similar to Selenops curazao and Selenops isopodus , but can be distinguished by the more quadrangular and more hyaline median field than Selenops curazao , and unlike Selenops isopodus , the median field is not completely enclosed anteriorly. The shape of the epigynal plate and the internal copulatory organs also differ significantly (Figs 1-2). Males unknown.

Remarks.

Even though only two adult female specimens have been collected, some variation is seen in the shape of border of the median field of the epigynum. In the holotype it is wider anteriorly, and more quadrangular in general, while in the other specimen, the median field is more rounded, and not wider anteriorly than it is posteriorly.

Description.

Holotype female : Color: Carapace brown-yellow with cephalic area primarily brown, dusky spots medially and laterally, with white setae; sternum orange-brown, darker around border; chelicerae dark brown, lightening anteromedially; maxillae light orange-brown, dark on outer distal edge, white on inner distal edge; labium light brown, lightening distally; abdomen dorsally cream-colored with some duskier flecks, and dark festoon caudolaterally; ventrally pale yellow, no markings; legs cream-yellow, darker distally, with annulations on all segments except the tarsi. Carapace: 0.92 times longer than broad. Eyes: AER slightly recurved; PER recurved; PME larger than AME, PLE largest, ALE smallest; eye diameters, AME 0.08, ALE 0.05, PME 0.15, PLE 0.40; interdistances AME-PME 0.13, PME-ALE 0.10, ALE-PLE 0.40. PME-PME 1.70. ALE-ALE 2.33; ocular quadrangle AME-AME 0.35, PLE-PLE 2.00; clypeus 0.56 high. Mouthparts: Chelicerae with stout setae medially and anteriorly; labium distally rounded. Sternum: as long as broad, posteriorly indented. Legs: leg I only slightly shorter than legs II, III and IV; leg formula 3241; scopulae present on all tarsi, as well as on first three metatarsi, and on the distal portion of the tibiae of legs I and II; tarsi I-IV with strong claw tufts; pr claw per foot with a few teeth; spination: leg I, Fm pr 1 –1– 0, d 1 –1– 1, rl 1 –1– 1; Ti d 0, v 2 –2– 2; Mt v 2-2; leg II, Fm pr 1 –1– 0, d 1 –1– 1, rl 1 –1– 1; Ti v 2 –2– 2; Mt v 2-2; leg III, Fm pr 1 –1– 0, d 1 –1– 1, rl 1 –1– 1; Ti v 2 –2– 0; Mt v 2 –2– 1; leg IV, Fm pr 1 –1– 0, d 1 –1– 1, rl 0 –1– 1; Ti v 2 –2– 0; Mt v 2-2. Abdomen: with terminal setal tufts. Pedipalp: claw with 11 teeth. Epigyne: epigynal plate subquadrangular, lateral lobes indistinct, hyaline median septum present, epigynal pockets present; spermathecae ovoid, directed laterally, posterodorsal fold present and covers much of the internal ducts (Figs 1-2). Dimensions: Total length 7.23. Carapace length 3.33, width 3.60. Width 1.72. Abdomen length 3.90, width 2.75. Pedipalp: Fm 1.00, Pt 0.35, Ti 0.30, Ta 1.00, total 2.65. Leg I: Fm 3.25, Pt 0.25, Ti 3.00, Mt 2.00, Ta 1.20, total 9.70. Leg II: Fm 3.75, Pt 1.30, Ti 3.25, Mt 2.25, Ta 1.25, total 11.80. Leg III: Fm 4.00, Pt 1.25, Ti 3.25, Mt 2.25, Ta 1.25, total 12.00. Leg IV: Fm 3.75, Pt 1.00, Ti 3.00, Mt 2.25, Ta 1.15, total 11.15.

Natural History.

Collected under rocks, bark, and debris on the ground, both near and away from human dwellings. The egg sac is a flat, white disc attached to the substrate and guarded by the female (Fig. 177).

Distribution.

Known only from the island of Aruba (Map 1).