Hortipes fastigiensis, BOSSELAERS & JOCQUÉ, 2000

BOSSELAERS, JAN & JOCQUÉ, RUDY, 2000, Hortipes, A Huge Genus Of Tiny Afrotropical Spiders (Araneae, Liocranidae), Bulletin of the American Museum of Natural History 2000 (256), pp. 4-4 : 4-

Hortipes fastigiensis , new species Figures 10a–c , 11f ; Map 2

TYPES: Male holotype in pitfall trap on Mount Rungwe, SW slope, elev. 1900 m, Tanzania (20 August, 1980; M. Stoltze and N. Scharff) ( ZMUC). Paratype: 1♀ together with holotype .

ETYMOLOGY: The species’ epithet refers to the environment where the type specimens were found: fastigium means slope.

DIAGNOSIS: Males of H. fastigiensis are recognized by the beak­shaped RTA. Females can be recognized by the very large globular ST1, the simple and straight ID running in posterior direction and the epigyne being a rounded triangular depression.

MALE: Measurements. Total length 2.27; carapace 1.13 long, 0.86 wide; length of fe: I 0.95, II 1.00, III 0.78, IV 1.22. Leg spination. Fe: I rv 2; IV plt 0 rlt 0; ti: I, II vsp 5–6; mt: III plt 0–1 vt 0 rlt 0; IV plt 1 vt 1 rlt 1. Coloration. Carapace lemon yellow, lighter around the fovea. Chelicerae, sternum, and legs pale yellow. Abdomen pale

38 BULLETIN AMERICAN MUSEUM OF NATURAL HISTORY NO. 256

cymbium fairly elongate, without retrolateral concavity nor series of curved hairs; sperm duct fairly broad over entire course, restrict­ ed to anterior half of tegulum except for last loop, slightly narrowed just before entering embolus; MA originating in frontal part of tegulum, fairly broad at base, curved over tegulum, strongly tapered in basal part, slen­ der and sinuous in distal part, tip reaches RTA; embolus originating on prolateral part of tegulum, whiplike, fairly short, distal part appressed against MA (fig. 10a, b).

FEMALE: Measurements. Total length 2.27; carapace 1.13 long, 0.86 wide; length of fe: I 0.95, II 1.00, III 0.78, IV 1.22. Leg spination. Fe: I rv 2; IV plt 0 rlt 0; ti: I, II vsp 5–6; mt: III plt 0–1 vt 0 rlt 0; IV plt 1 vt 1 rlt 1. Coloration. Carapace yellow, cephalic region pale yellow. Chelicerae pale yellow, sternum, and legs yellow. Abdomen pale yellow, without pattern. Genitalia. Epigyne a triangular depression with rounded corners, situated between anterior ends of ST1 and flanked by ID entrances (fig. 10c). Vulva: IDs almost straight, running parallel to each other in posterior direction, entrance associated with glandular structure connected with the lumen through a series of pores. Spermathecae 1 globular, very large, touching each other on symmetry axis (fig. 11f).

DISTRIBUTION: Known only from the type locality.

Figures

Map 2. Distribution of Hortipes species in Tanzania. Hortipes angariopsis z, H. bjorni v, H. castor •, H. creber h, H. cucurbita ^, H. delphinus., H. exoptans, H. fastigiensis #, H. narcissus Δ, H. leno, H. libidinosus * H. mulciber, H. ostiovolutus n, H. platnicki D, H. pollux O, H. salticola V, H. scharffi, and H. stoltzei y.

Fig. 10. a–c. Hortipes fastigiensis, new species. a, b. Male left palp, ventral and retrolateral views. c. Epigyne. d–f. Hortipes ostiovolutus, new species. d, e. Male right palp, ventral and retrolateral views. f. Epigyne. g, h. Hortipes exoptans, new species, male right palp, ventral and retrolateral views. i–k.

Fig. 11. a. Hortipes platnicki, new species, vulva, ventral view. b. Hortipes castor, new species, vulva, ventral view. Arrows indicate ID entrances. c. Hortipes pollux, new species, vulva, ventral view. d. Hortipes ostiovolutus, new species, vulva, ventral view. e. Hortipes salticola, new species, vulva, ventral view. Arrows indicate ID entrances. f. Hortipes fastigiensis, new species, vulva, ventral view. Scale line: 0.1 mm.