Orinomana florezi, Grismado, Cristian J. & Rubio, Gonzalo D., 2015

Grismado, Cristian J. & Rubio, Gonzalo D., 2015, Three new species and the first known males of the Andean spider genus Orinomana Strand (Araneae, Uloboridae), Zootaxa 4052 (2), pp. 201-214 : 210-212

Orinomana florezi new species

( Figs. 5 E–F, 6G–I)

Types. Female holotype from Colombia, Departamento del Valle de Cauca, Parque Nacional Las Hermosas, Laguna Santa Teresa, 3° 31’N, 75° 59’W, 3500 m, IX 1994, col. E. Flórez. Deposited in ICN-AR (# 1254), prep. CJG-00167.

Etymology. The specific name is a patronym in honor of Eduardo Flórez (ICN), collector of the type series.

Diagnosis. Females of O. florezi are recognized by the triangular epigynal plate with a small incision on the posterior median border ( Fig. 6 G). The spermathecae are very similar to those of O. bituberculata , but the copulatory ducts are shorter, and arise from the posterior spermathecae instead from the constriction area ( Fig. 6 I; Opell 1979, fig. 125).

Description. Female (holotype): Total length 3.84, carapace length 1.44, sternum length 0.94, abdomen height 2.68. Leg I: femur length 1.68, tibia length 1.12, metatarsus length 1.34, tarsus length 0.58. Carapace brown with a medial dorsal yellowish stripe from the ocular area to back and two irregular dark spots in front to the fovea. Eyes on dark rings, the lateral ones on yellowish areas. Chelicerae, labium and endites distally whitish, proximally light brown. Sternum pale orange-brown with two anterior, oblique darker spots. Legs yellowish with irregular, diffused brown bands, this dark pigment is more extensive in prolateral surfaces of femora-patellae-tibiae I. Abdomen very high, whitish grey, with a cardiac dark band between the pedicel and the dorsal humps; posterior to the humps, diffuse dark transversal marks, slightly more evident on caudal area. Ventrally uniform yellowish.

Genitalia: Epigynal plate nearly triangular, with the posterior margin medially incised ( Fig. 6 G); fertilization ducts arise from the junction area of the anterior and posterior spermathecae, meanwhile the copulatory ducts open in the posterior pair ( Fig. 6 I).

Variability: The other adult female specimen show a lighter cardiac band, the abdominal pattern more marbled at sides, and the bands on legs are more dark and conspicuous, specially, the brown bands in distal metatarsi.

Material examined. One immature (same data as the holotype) and one female and four immatures –two of these are subadult males- (same data, ICN-AR 1239).

Distribution. Only known from the type locality, in Valle de Cauca, Colombia.

Figures

FIGURE 5. Habitus of Orinomana spp. A – D, O. ascha Grismado. E – F, O. florezi new species. A – B, E – F, females. C – D, male. A, D, E, dorsal view. B, C, F, lateral view. Scale bars, 1 mm.

FIGURE 6. Orinomana spp. genital morphology. Palp morphology. A – C, O. ascha Grismado; male left palp. D – I, female genitalia; D – F, O. viracocha new species. G – I, O. florezi new species. A, prolateral view; B, ventral, C, retrolateral; D, G, epigynum, ventral view; E, H, same, posterior view; F, I, vulva, cleared, dorsal view. Scale bars, 0.2 mm.