Plexippus fuscus, Rollard & Wesołowska, 2002

Rollard, Christine & Wesołowska, Wanda, 2002, Jumping spiders (Arachnida, Araneae, Salticidae) from the Nimba Mountains in Guinea, Zoosystema 24 (2), pp. 283-307 : 303-304

Plexippus fuscus n. sp.

( Fig. 15 )

TYPE MATERIAL. — Holotype: Mountain Leclerc , 1250 m a.s.l., on ground in low vegetation, 23.III.1991, leg. C. Rollard,.

ETYMOLOGY. — The specific name is Latin for “dark”, and refers to the coloration of this species.

DIAGNOSIS. — This species may be separated by the structure of the epigyne, especially the seminal ducts, initial parts of which are heavily sclerotized deep bowls.

DESCRIPTION

Male unknown.

Female. Measurements: carapace length 3.4, width 2.3, height 1.6. Abdomen length 4.0, width 2.4. Eye field length 1.3, anterior and

A posterior width 1.9. Medium sized spider. Carapace rather low, dark brown, near eyes black. Thorax medially lighter, orange. Dense brown hairs cover whole carapace, long bristles in vicinity of eyes. Clypeus low, brown. Chelicerae dark brown, two teeth on promargin, single tooth on retromargin. Labium brown, maxillae brown with pale tips, sternum orange. Abdomen elongated, brownishrusset with yellow broad median belt. Venter greyish-yellow. Dense brown hairs on abdomen, longer and denser at anterior margin. Spinnerets yellow. First pair of legs brown, remaining ones orange, only their femora brown. Leg hairs and spines brown. Epigyne elongated, large, strongly sclerotized, with single narrow pocket centrally and two fissured gonopores ( Fig. 15A ). Initial parts of seminal ducts wide, very strongly sclerotized ( Fig. 15B ).

Figures

FIG. 15. — Plexippus fuscus n. sp., holotype; A, epigyne; B, internal structure of epigyne. Scale bars: 0.2 mm.