Sitticus pintanus, Edwards & Baert & Fdacs, 1903

Edwards, G. B., Baert, L. & Fdacs, 1903, New Species, Combinations, and Records of Jumping Spiders in the Galápagos Islands (Araneae: Salticidae), Belgian Journal of Entomology 67, pp. 1-27 : 1-27

Tribe Sitticini

Sitticus pintanus sp. nov.

urn:lsid:zoobank.org:act:C04B9BA3-407E-4C9B-9184-EC3B7DC2A692

Figs 1 , 3 (A-B)

ETYMOLOGY: The species is named after the island of its occurrence.

TYPES: Holotype male from Isla Pinta : Cabo Ibbetson, sea cliff spraying, 16.III.1992, coll. S. Peck and J. Cook. Paratype male with same data. Only specimens known .

DIAGNOSIS: S. pintanus is easily distinguished from other members of its species group except S. trisetosus sp. nov. by the prolateral origin of the embolus. From the latter species it can be distinguished by its much smaller size and lack of abdominal spots, and by its slightly less clockwise embolus position with the spermophore turned outward near the embolus base. The origin of the embolus of other species in the group is either proximal or on the retrolateral side. The RTA also is more strongly ventrally curved than other related species.

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8 DESCRIPTION: Male holotype (paratype in parentheses): BL 3.07 (3.17), CL 1.58 (1.62), CW 1.12 (1.11), AER 1.07 (1.05), PER 0.99 (0.95). Chelicerae with four promarginal teeth fused basally, zero retromarginal teeth. Body entirely brown, varying only by shades. Carapace and abdomen dark brown, with median third of venter of abdomen medium grayish brown; legs medium brown except lateral sides of femora and distal ends of other segments dark brown; the inner edges of the endites and distal end of the labium are light brown; palps dark brown except dorsum of the cymbium is covered with white setae. Leg macrosetae: I-II M p 1-1, v 2- 2, Tb p 1-1-1, v 2-2-1r, P p 1; III M p 1-1, v 2-2, r 1-1, Tb p 1-1-1, v 2-0-0, r 1-1-1, P p 1, r 1; IV M p 1-1, v 2-2, r 1-1, Tb p 1-1-1, v 2-0-1p, r 1-1-1, P p 1, r 1.

Female unknown.

Sitticus trisetosus sp. nov.

urn:lsid:zoobank.org:act:160C6FFD-0CC7-4CC0-90B2-3D6F763858E2

Figs 2 , 3 (C-D)

ETYMOLOGY: The species is named for the unusual character of having three sets of lateral macrosetae on the fourth metatarsus.

TYPES: Holotype male from Isla Española , Pto. Suarez, blow-hole beach in rocks near high tide line, 21.I.1977. Only specimen known.

DIAGNOSIS: S. trisetosus is easily distinguished from other members of its species group except S. pintanus by the prolateral origin of the embolus. From the latter species it can be distinguished by its much larger size and sets of abdominal spots, and by its slightly more clockwise embolus position with the spermophore turned inward near the embolus base. The RTA tip has a short lateral hook.

DESCRIPTION: Male holotype: BL 5.92, CL 2.91, CW 2.07, AER 1.86, PER 1.61. Chelicerae with four promarginal teeth contiguous basally, zero retromarginal teeth. Body and legs mostly medium brown, distal leg segments with subdistal lighter brown rings. Abdomen with two pair of prominent pale dorsal spots surrounded anteriorly and laterally by five pair of faint pale spots; chelicerae, endites and labium darker brown, with the inner edges of the endites and adjacent edge of the labium pale; palps medium brown without white setae. Leg formula I-IV-II-III, leg macrosetae: I M v 2-2, Tb p 1-0-1, v 2-2(offset)-0, F dp 2-0-0; II like I except Tb v 2-1r-0; III M p 2-1, v 2-1p, r 2-1, Tb p 1-1-1, v 2-0-0, r 1-1-0, P p 1, r 1, F dp 2-0-0; IV M p 2-1-1, v 2-0-0, r 1-1-1, Tb p 1-1-1, v 2-0-1p, r 1-1-1, P p 1, r 1, F dp 1-0-0, dr 1-0-0.

Female unknown.

NOTES: Tibia I has the second pair of ventral macrosetae offset so that the retrolateral one is more proximal. The fourth metatarsus apparently has regained (or retained) some elements of the plesiomorphic condition of three sets of macrosetae. Possibly this is correlated with the fact that the legs are longer and more slender than is typical for a species of Sitticus .

Figures

Fig. 1. Sitticus pintanus sp. nov. Male holotype: A. dorsal, B. face, C. ventral, D. palp retrolateral, E. palp dorsoretrolateral, F. palp ventral, G. palp ventroretrolateral.

Fig. 3. Sitticus pintanus sp. nov. Male: A. right palp ventral, B. right palp retrolateral. Sitticus trisetosus sp. nov. Male: C. left palp ventral. D. left palp retrolateral (Julien Caudron).

Fig. 2. Sitticus trisetosus sp. nov. Male holotype: A. dorsal, B. ventral, C. anterior venter showing cheliceral teeth; D. palp dorsal, E. palp retroventral (arrow at distal hook), F. palp ventral, G. palp retrodorsal, H. palp retrolateral, I. ventral fourth metatarsus showing three sets (right arrows) of lateral macrosetae.