Corinnomma olivaceum Simon, 1896

Haddad, Charles R., 2006, A new species of Corinnomma (Araneae: Corinnidae) from southern and eastern Africa, with taxonomic notes on C. olivaceum and C. semiglabrum, African Invertebrates 47, pp. 71-83 : 80-82

Corinnomma olivaceum Simon, 1896

Figs 16, 17

Corinnomma olivaceum: Simon 1896: 403 .

Diagnosis: This species can be recognised by PME–PME eye interdistance, which is greater than in the other two species ( Fig. 16 ), and the entrance ducts, which are directed anteriorly ( Fig. 17 ).

Redescription:

Female.

Measurements: CL 3.03, CW 2.03, AL 3.10, AW 1.88, TL 6.50, FL 0.23, SL 1.45, SW 1.13, AME–AME 0.10, AME–ALE 0.05, ALE–ALE 0.40, PME–PME 0.18, PME– PLE 0.10, PLE–PLE 0.65.

Length of leg segments (sequence from femur to tarsus, and total): I 2.10+ 0.85+1.93+1.62+1.15=7.65; II both legs missing; III 1.95+0.75+1.40+1.60+0.80=6.50; IV 2.60+0.90+2.50+2.75+1.00=9.75.

The following is a translation of Simon’s (1896) description:*

Cephalothorax: Black, finely wrinkled, both sides clothed in downy whitish hairs, shiny golden-yellow medially. Abdomen: Narrow oblong, dark olive green on basal part (in mature specimens), covered with large spot on the back which is enlarged and shortened, with very shiny golden yellow setae, on apical part shiny golden yellow pubescent when mature but narrow and black near spinnerets, and in the middle a distinctive white spot, underneath in front whitish, at the back olive green, smaller when mature and on both sides covered with a pair of oblique whitish spots, in the region of the epigastric furrow leathery, black, near the edge two small indents. Sternum black, finely wrinkled, covered with small and minute white hairs. Claws arched, black, smoothly wrinkled. Tarsi ordinary, slender, front shiny, tibiae, except at apex, black, patellas with black lines on both sides, metatarsi 1 dark towards apex; four tarsi black at the back [referring to scopulae?], metatarsi reddish, tarsi yellowish-brown; tibias 1 with small spines 2–1, tibia 2 with 2 spines, all four metatarsi spined in front 2–2, armoured underneath. Pedipalps black, tarsus slightly brighter apically. – Northern Abyssinia.

Male. Unknown.

Holotype:^deposited in MNHN (examined). Two labels accompany the types: ‘ Abyssinia, E. Simon, 3405 // C. olivaceum E.S. ’.

Distribution: Currently known only from the type locality in Ethiopia.

Biology: Unknown.

Figures

Figs 16, 17. Corinnomma olivaceum Simon, holotype:(16) cephalothorax, dorsal view; (17) female epigyne, ventral view. Scale bars: Fig. 16 = 1.0 mm; Fig. 17 = 0.3 mm.