Evarcha maculata, 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 : 290-292

Evarcha maculata n. sp.

( Fig. 6 )

TYPE MATERIAL. — Holotype: Mountain Leclerc , 900 m a.s.l., on the ground, 24.III.1991, leg. C. Rollard,; paratype: together with holotype, 1.

A B C

ETYMOLOGY. — The specific name is Latin for “spotted”, and refers to the abdominal pattern of this species.

DIAGNOSIS. — The male may be distinguished by the short embolus and the shape of the tibial apophysis. The female differs from other species by details of the internal structure of the epigyne, especially by the course of the seminal ducts.

DESCRIPTION

Male. Measurements: carapace length 1.7, width 1.2, height 0.8. Abdomen length 1.4, width 1.0. Eye field length 0.7, anterior width 1.1, posterior width 1.2. Eye field brown, two black patches in its centre, eye surrounds black. Thorax light brown, darker on slopes. Few brownish hairs on carapace, longer bristles near eyes. Small yellowish scales around anterior eyes. White hairs cover clypeus. Chelicerae and labium brown, sternum and maxillae yellowish-orange. Abdomen brownish with irregular median streak composed of yellowish patches; abdominal pattern resembles E. certa n. sp. Venter yellow, with wide median brownish streak and two narrow lines laterally. Sparse bristles at anterior abdominal margins. Spinnerets brown. Legs light brown with two darker rings on femora, and darker apical parts of remaining leg segments. Leg hairs brown and greyish, spines long. Pedipalp shown in Fig. 6 A-C. Embolus very short, bulbus with big posterior lobe, tibial apophysis straight, pointed.

Female. Measurements: carapace length 1.8, width 1.4, height 0.7. Abdomen length 1.8, width 1.1. Eye field length 0.8, anterior width 1.2, posterior width 1.3. Like male, but coloration lighter. Carapace light brown, only eye surroundings black. Clypeus brownish. Abdominal pattern as in male, but clearly lighter, not contrasting. Brown hairs cover abdomen, longer and bushier at anterior edge. Spinnerets grey. Legs yellowish-orange. Epigyne strongly sclerotized with two pockets near epigastric furrow ( Fig. 6D ). Receptacles multi-chambered ( Fig. 6E, F ).

Figures

FIG. 6. — Evarcha maculata n. sp., holotype (male) and paratype (female); A, palpal organ, ventral view; B, palpal organ, retrolateral view; C, palpal organ, dorsal view; D, epigyne; E, internal structure of epigyne, ventral view; F, internal structure of epigyne, dorsal view. Scale bars: A-C, 0.2 mm; D-F, 0.1 mm.