Afroceto corcula, Lyle & Haddad, 2010

Lyle, Robin & Haddad, Charles R., 2010, A revision of the tracheline sac spider genus Cetonana Strand, 1929 in the Afrotropical Region, with descriptions of two new genera (Araneae Corinnidae), African Invertebrates 51 (2), pp. 321-321 : 350-352

publication ID	https://doi.org/ 10.5733/afin.051.0206
DOI	https://doi.org/10.5281/zenodo.7913771
persistent identifier	https://treatment.plazi.org/id/03EE87AD-FFEA-FFE9-FDF5-FD35C6204F95
treatment provided by	Felipe
scientific name	Afroceto corcula
status	sp. nov.

Treatment

Afroceto corcula View in CoL sp. n.

Figs 10 View Figs 1–22 , 64–66 View Figs 64–66

Etymology: From Latin corcullum (little heart); refers to the heartshaped structure of the epigynal ridges.

Diagnosis: This species is easily recognised by the heart shape of the anterior epigynal ridges. It can be further recognised by the small globular shape of ST I and ST II, linked by a curved duct ( Figs 65, 66 View Figs 64–66 ). Ventral cusps are present on the anterior metatarsi and tarsi ( Fig. 64 View Figs 64–66 ). Male unknown.

Description:

Female.

Measurements: CL 2.80–2.95, CW 2.30–2.48, AL 2.60–3.50, AW 2.20–2.23, TL 5.70– 6.40, FL 0.18–0.20, SL 1.60–1.78, SW 1.33–1.38, AME–AME 0.15, AME–ALE 0.08, ALE–ALE 0.48, PME–PME 0.15, PME–PLE 0.20, PLE–PLE 0.83. Length of leg segments (sequence from femur to tarsus, and total): I 2.40+1.08+1.98+1.60+1.08=8.14; II 2.25+1.10+1.68+1.53+1.03=7.59; III 1.78+0.88+1.13+1.45+0.55=5.79; IV 2.50+1.05+ 1.95+1.80+0.70=8.00.

Carapace bright orange to brown ( Fig. 10 View Figs 1–22 ); first two thirds of carapace convex, last third with relatively steep decline; surface smooth, covered in short, fine setae; fovea short, distinct, at two thirds CL. Ocular region brown with dark brown rings around eyes; AER slightly recurved,AME slightly larger than ALE; clypeus height equal to AME diameter; AME separated by distance slightly less their diameter; AME separated from ALE by 0.4 AME diameter; PER recurved, PLE slightly larger than PME; PME separated by 1.2 their diameter; PME separated from PLE by 1.6 PME diameter. Chelicerae orange, slightly darker at fang base; scattered long setae on anterior surface, increasing slightly in length towards fang base; fang pale orange; two promarginal teeth, distal tooth largest; one retromarginal tooth, situated distally. Sternum pale orange, brown towards border; surface covered in fine, long, pale setae. Abdomen cream dorsally, with very pale grey chevron with few lateral branches; abdomen broader anteriorly, tapering posteriorly; two pairs of pale grey sigilla, anterior and posterior to midpoint of abdomen; fine scattered setae covering abdomen; venter cream. Legs I to IV uniform brown to pale yellow; anterior legs more robust than posterior pairs; relatively dense scopulae on ventral surface of tibiae, metatarsi and tarsi; remaining leg segments covered in fine, pale setae; leg spines and cusps present. Leg spination: femora: I pl 2; patellae spineless; tibiae: III pl 1 vt 1, IV plv 1 vt 2; metatarsi: I plv 5 cusps, II plv 5 cusps, III pl 1 rl 1 plv 1, IV pl 1 rl 1 plv 2; tarsi: I plv 4 cusps, II plv 3 cusps ( Fig. 64 View Figs 64–66 ). Epigyne weakly sclerotised; epigynal ridges meeting anteriorly medially, heartshaped, extending laterally to median copulatory openings ( Fig. 65 View Figs 64–66 ); ST II globular, situated slightly anterior to copulatory openings, with curved narrow duct leading to slightly larger globular lateral ST I; ST I situated posterior to copulatory openings ( Figs 65, 66 View Figs 64–66 ).

Holotype: ♀ SOUTH AFRICA: Northern Cape: Horingsgat , ca 4 km N of Leliefontein in Kamiesberg, 30°18'S: 18°05'E, 24–25.ii.1979, B. Lamoral ( NMSA, 11891). GoogleMaps

Paratype: ♀ SOUTH AFRICA: Western Cape: Clanwilliam, Dwars Rivier 330, 32°31'S: 19°16'E, 13.iii.1993, L.N. Lotz, night in house ( NMBA, 5940) GoogleMaps .

Distribution: Known from the Western and Northern Cape provinces, South Africa ( Fig. 67 View Fig ).