Euryopis boliviensis new species

Figs. 5 A–D, 6 A–D, 8C, 9E, F, 10

LSIDurn:lsid:zoobank.org:act: FAD9973-09A8-4D7F-AAA6-A9BE81FCFB70

Type material. Holotype. Bolivia: La Paz Department, Murillo (Mecapaca 16°39’51.5”S, 68°00’56.6”W), III.1980, 1M (MCN 25528) . Paratype: La Paz Department, Murillo (Mecapaca 16°39’51.5”S, 68°00’56.6”W), III.1980, 1F (MCN 25528) .

Etymology. The specific name is derived from the type locality.

Diagnosis. Males of Euryopis boliviensis n. sp. resemble those of Euryopis nasuta, but E. boliviensis n. sp. differs from E. nasuta in having the apical portion of the conductor with a thin hook-like projection (Fig. 8C), absent in E. nasuta, and by the absence of nose-like projection in the clypeus, present in the latter. Females of the E. boliviensis n. sp. resemble those of E. nasuta, but differ by having the second spermathecae further apart (Figs 9E, F), and closer to each other in the E. nasuta, and by a larger and more sclerotized copulatory opening (Fig. 9E) than in E. nasuta .

Description. Male holotype (MCN 25528). Total length 2.33. Carapace length 0.94, width 0.77, clypeus height 0.33. Sternum length 0.50, width 0.46. Abdomen length 1.19, width 0.86, height 0.58. Leg formula IV/I/II/ III; segment length (I/II/III/IV): femora 0.63/0.60/0.56/0.73; patellae+tibiae 0.79/0.73/0.69/0.88; metatarsi+tarsi 0.84/0.79/0.79/0.94; total 2.26/2.12/2.04/2.55. Carapace oval (Fig. 5A), orange brown. Ocular region slightly pronounced, eyes with black margins (Fig. 5C). Eye diameter and interdistances: AME 0.02, PME 0.04, ALE 0.04, PLE 0.06, AME–AME 0.04, AME–ALE 0.02, PME–PME 0.06, PME–PLE 0.04. Fovea marked dark brown (Fig. 5A). Sternum scutiform (Fig. 5B), yellow, lighter than the carapace. Legs yellow with blackish pigment on the sides, except on the coxae and trochanter. Pedicel elongated with two longitudinal blackened bands (Fig. 5A, 5B, 5D). Abdomen oval (Fig. 5A, 5B), dorsally brown with irregular yellow pattern. In ventral view, predominantly yellow with a blackened spot in median-anterior area and two blackened spots on the posterior laterals. Spinnerets yellow. Palp with cymbium oval in dorsal view; the conductor distally hook-shaped and embolus apically sclerotized (Fig. 8C); conductor enlarged, and median apophysis with loop-like duct (Fig. 8C).

Female paratype (MCN 25528). Total length 2.54. Carapace length 0.96, width 0.79. Clypeus height 0.14. Sternum length 0.56, width 0.44. Abdomen length 1.65, width 1.05, height 0.94. Leg formula IV/I/III/II; segment length (I/II/III/IV): femora 0.73/0.65/0.60/0.71; patellae+tibiae 0.88/0.79/0.81/1.05; metatarsi+tarsi 0.92/0.73/0.77/1.00; total 2.53/2.17/2.18/2.76. Carapace (Fig. 6A) yellow, oval, with blackish edges. Ocular region slightly bulged, eyes with black margins (Fig. 6C). Eye diameter and interdistances: AME 0.06, PME 0.06, ALE 0.06, PLE 0.06, AME–AME 0.04, AME–ALE 0.02, PME–PME 0.06, PME–PLE 0.04. Sternum scutiform (Fig. 6B), yellow with blackened edges. Pedicel yellow with two longitudinal blackened bands (Fig. 6A). In dorsal view, abdomen longer than wide (Fig. 6A, 6B), sparse setae, predominantly yellow with irregular pattern of dark brown spots. In ventral view abdomen yellow with two black spots on the posterior laterals (Fig. 6B). Spinnerets yellow. Epigynum with a slightly sclerotized plate, longer than wide (Fig. 9E). Internal genitalia with two pairs of round spermathecae with the similar size, first pair of spermathecae slightly larger (Fig. 9F), short and coiled fertilization ducts (Fig. 9F) and uncoiled copulatory ducts (Fig. 9F).

Natural history. Unknown.

Distribution. Bolivia (La Paz, Fig. 10).