Acanthoctenus dumicola Simon, 1906

Arizala, Stephany, Labarque, Facundo Martín & Polotow, Daniele, 2021, Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae Acanthocteninae), Zootaxa 4920 (1), pp. 1-55 : 21-23

Acanthoctenus dumicola Simon, 1906 stat. res.

Figs 10B , 19–21

Acanthoctenus dumicola Simon, 1906: 289 (female holotype from Venezuela, La Guaira, [10º35’15.0”N, 66º55’17.0”W], deposited in MNHN AR14426, examined).—Mello-Leit„o 1936: 201.— World Spider Catalog 2020.

Acanthoctenus spiniger — Lehtinen, 1967: 208 (Syn.).— World Spider Catalog 2020.

Other material examined. VENEZUELA. Apure: Mararay [7º20’35.4”N, 71º15’00.4”W], 1 female ( SMF 69661) .

Diagnosis. Females of Acanthoctenus dumicola stat. res. ( Figs 19 A–B, 20D, 21A–B) resemble those of A. remotus ( Fig. 34 C–D; Polotow & Brescovit 2012: 41, fig. 1c–d) by the atrium with two strongly sclerotized anterior borders and the lateral sectors anterior border forming a 30° angle with the median sector longitudinal axis. It can be distinguished by the median sector 1.5 times longer than wide, the atrium narrowed, and the presence of an adesmatic joint in the metatarsus IV ( Fig. 20 E–F). A. remotus presents an elongated median sector, more than two times longer than wide, a broader atrium, and an entire metatarsus IV.

Description. Male. Unknown.

Female (holotype MNHN AR14426). Total length 13.38. Carapace 5.31 long and 4.87 wide. Clypeus 0.38 high. Eye diameters: AME 0.29, ALE 0.20, PME 0.35, PLE 0.47. Leg measurements: I: femur 6.50/ patella 2.56/ tibia 6.67/ metatarsus 5.85/ tarsus 1.81/ total 23.39; II: 6.51/ 2.67/ 6.19/ 5.39/ 1.62/ 22.38; III: 5.12/ 2.10/ 4.30/ 5.15/ 1.70/ 18.37; IV: 6.94/ 2.35/ 5.67/ 7.53/ 2.20/ 24.69. Leg formula 4123. Leg spination: tibia I and II v2-2-2-2-2-2-2-2-2, p-1-1-1-1-1, r-1-0-1-1-1, III v2-2-2, p-1-1, r-1-1-1, IV v-2-2-2, p-1-1, r-1-1; metatarsus I and II v-2-2-2-2-2, p-1-0-1-1, r-1-1-0-1, III v-2-2-2, p-1-1-1,r-1-1 and IV v-1-1-1-1-1, p-1-1-1, r-1-1. Epigynum ( Figs 19 A–B, 20D, 21A–B): median sector subpentagonal, elongated, wide anteriorly, extending into the atrium, and projected posteriorly; anterior border of the lateral sectors straight; atrium small; copulatory ducts strongly sclerotized, curved, S-shaped; spermathecae head quote-shaped, with apical glandular openings, spermathecae base curled; fertilization ducts tubular, slanting outwards

Distribution. Northern Venezuela ( Fig. 10B ).

Figures

FIGURE 10. Distribution map of Acanthoctenus species. A, south of North America and Central America; B. north of South America.

FIGURE 19. Acanthoctenus dumicola Simon, 1906 stat. res., female (SMF 69661).A, epigynum, ventral; B, internal genitalia, dorsal.

FIGURE 20. Acanthoctenus dumicola Simon, 1906 stat. res., female holotype (MNHN AR14426). A–C, habitus; A, dorsal; B, ventral; C, frontal. D, epigynum, ventral. E–F, leg metatarsus-tarsus IV, prolateral; E, arrow to adesmatic joint; F, detail.

FIGURE 21. Acanthoctenus dumicola Simon, 1906 stat. res., female (SMF 69661).A, epigynum, ventral; B, internal genitalia, dorsal (asterisk to gland openings).

FIGURE 34. Acanthoctenus remotus Chickering, 1960, copulatory organs.A–B, male palp (holotype, MCZ 22882); A, ventral; B, retrolateral; C–D, female genitalia (paratype, MCZ 22882); C, epigynum, ventral. D, internal genitalia, dorsal.