Bolostromus venustus Ausserer, 1875

Dupérré, Nadine, 2023, Review of the American genus Bolostromus Ausserer, 1875 with the description of fourteen new species (Araneae, Cyrtaucheniidae), Zootaxa 5317 (1), pp. 1-88 : 23

Bolostromus venustus Ausserer, 1875

Fig. 18 , map 1

Bolostromus venustus Ausserer, 1875: 150 , pl. 5, f. 10–12 (Description female).

Bolostromus venustus Simon, 1892 a: 100 , f. 101 (Description male).

Type material. Länge des ganzen Thieres …..6. 4. St. Fé de Bogota. ( BMNH) Examined by photo .

Diagnosis. (based on the illustration provided by Indicatti 2007: 20-A–E). Females are distinguished from all species by their elongated spermathecae with small, curved internally positioned lobes.

Distribution. Only known from Colombia.

Note. The type specimen is in bad condition, neither the opisthosoma nor the genitalia could be found in the vial (Sherwood pers. comm). Only a few details can be observed from the pictures, the AME are widely separated, the rastrellum has six spines and the cheliceral retromargin has six teeth. Simon (1892) described the male from an unknown locality with only an illustration of the eye pattern and a brief description of the tibia and metatarsi. In 1997, Indicatti stated that the specimen BMNH 300 was examined from photos and the genitalia was illustrated by J.P.L. Guadanucci and C.A. Rheims. Indicatti redescribed the species, based on a female and a male from the AMNH, from the Bogotá region. Consequently , his descriptions are the most reliable information to identify the species (Indicatti 1997: 51).

Figures

MAP 1. Distribution map of Bolostromus in Central America and Northern South America. Bolostromus laheredia n. sp. (turquoise circle), B. panamanus (Petrunkevitch, 1925) (blue star), B. holguinensis Rudloff, 1996 (green star), B. busu n. sp. (red circle), B. insularis (Simon, 1892) (pink star), B. pulchripes (Simon, 1889) (red star), B. fauna (Simon, 1889) (black star), Bolostromus venustus Ausserer, 1875 (orange star).

FIGURE 18. Bolostromus venustus Ausserer, 1875. Female syntype (BMNH). A. Carapace, dorsal view. B. Carapace ventral view. C. Eye region, dorsal view. D. Chelicerae, anterior view. E. Chelicerae, lateral view. Scale bar: 0.5mm.