Yoruba ibadanus, Rodrigues & Rheims, 2020

Rodrigues, Bruno V. B. & Rheims, Cristina A., 2020, An overview of the African genera of Prodidominae spiders: descriptions and remarks (Araneae: Gnaphosidae), Zootaxa 4799 (1), pp. 1-80: 69-75

publication ID

https://doi.org/10.11646/zootaxa.4799.1.1

publication LSID

lsid:zoobank.org:pub:E295AAC9-09C8-48A3-8C5F-402117381B80

persistent identifier

http://treatment.plazi.org/id/03EE8789-3B1B-A13A-6AEC-F974ADEDF967

treatment provided by

Plazi

scientific name

Yoruba ibadanus
status

sp. nov.

Yoruba ibadanus   sp. nov.

Figs 54 View FIGURE 54 B–F, 55A–F, 56A–F, 57A–F, 58A–F, 59A –F

Type material. Male holotype from Nigeria, Ibadan [7°23’47”N 3°55’E], 1 April 1973, A. Russell-Smith leg., deposited in MRAC 245546 View Materials . GoogleMaps   Paratypes from the same vial as holotype: 13 males and 3 females GoogleMaps   .

Etymology. The specific name refers to the type locality, adjective.

Diagnosis. Males of Yoruba ibadanus   sp. nov. are distinguished from those of Y. toubensis   sp. nov. by the presence of a screw-shaped embolus (laminar and without folds in Y. toubensis   sp. nov.) and straight VTA (pointing retrolaterally in ventral view in Y. toubensis   sp. nov.) ( Figs 58D View FIGURE 58 , 59B, C View FIGURE 59 ); females differ of Y. toubensis   sp. nov. by the presence of an epigynal scape (absent in Y. toubensis   sp. nov.) and the slender connecting ducts, with proximal part curving behind the copulatory duct ( Fig. 59E View FIGURE 59 ).

Description. Male (holotype). Total length: 2.78. Carapace 1.03 long, 0.70 wide; Abdomen 1.46 long, 0.68 wide; Sternum 0.68 long, 0.55 wide; Spinnerets: ALS 0.22 long, 0.14 wide. Eye diameters: AME 0.05, ALE 0.045, PME 0.04, PLE 0.04; interdistances: AME–AME 0.03, PME–PME 0.02. Chelicerae 0.27 long. Leg measurements: I: 3.30 (0.90, 0.66, 0.68, 0.56, 0.50); II: 2.46 (0.70, 0.40, 0.51, 0.45, 0.40); III: 2.28 (0.58, 0.30, 0.50, 0.46, 0.44); IV: 3.38 (0.92, 0.49, 0.75, 0.66, 0.56). Leg spination: I—femur d1-0-0. II—femur d1-0-0. III—femur d1-1-0; tibia v1-0-1, r0-0-1, p0-0-1; metatarsus v2-0-1, r1-0-1, p0-0-1. IV—femur 1-1-0; tibia v1-2-2, r1-0-1, p1-0-1; metatarsus v1-1-2, p1-0-1, r0-1-0. Palp: RTA short and tapered; embolus arising from center of tegulum at 9 o’clock position ( Figs 61 View FIGURE 61 D–F, 62A–C).

Female (Paratype). Total length: 2.21. Carapace 0.87 long, 0.62 wide; Abdomen 1.31 long, 0.78 wide; Sternum 0.62 long, 0.50 wide; Spinnerets ALS 0.20 long, 0.12 wide. Eye diameters: AME 0.04, ALE 0.03, PME 0.04, PLE 0.03; interdistances: AME–AME 0.01, PME–PME 0.02. Chelicerae 0.26 long. Leg measurements: I: 2.87 (0.78, 0.56, 0.59, 0.52, 0.42); II: 1.97 (0.55, 0.30, 0.40, 0.37, 0.35); III: 1.75 (0.47, 0.28, 0.36, 0.32, 0.32); IV: 3.01 (0.79, 0.45, 0.66, 0.60, 0.51). Leg spination: I—femur d1-1-0. II—femur d1-1-0. III—femur d1-1-0; tibia v0-1-1, p1-0-1; metatarsus v1-0-1, r0-1-0, p0-0-1. IV—femur 1-1-0; tibia v1p-1p-2, r1-0-1, p1-0-1; metatarsus v1-0-2, p0-0-1, r0- 1-0. Vulva: copulatory ducts with constrictions laterad; primary spermathecae rounded ( Fig. 59E View FIGURE 59 ).

Variation. Total length (14 males): 1.97–2.40; (3 females): 2.12–2.70.

Distribution. Known only from type locality, Ibadan, Nigeria ( Fig. 61 View FIGURE 61 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Gnaphosidae

Genus

Yoruba