Hortipes lejeunei, 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 lejeunei , new species Figures 24a–c , 26a, b ; Map 3

TYPES: Male holotype and paratype collected among dry fern leaves, Ruwenzori north slope, Kikura camp, valley of the Ruanoli, Kivu, Congo N00°35', E29°57' (July–August 1974; M. Lejeune) ( MRAC 154.105 ). Paratypes: 16 together with holotype ; 2♀ at elev. 2000 m, Ruwenzori N slope, Kikura camp, Kivu, Congo N00°35', E29°57' (July – August, 1974; M. Lejeune) ( MRAC; 1♀ in AMNH) ; 1♀ on overhanging soil, elev. 1700 m, Kahuha Forest , km 7 on the road Butembo­Beni, Kivu, Congo N00°09', E29°17' (15–20 April 1974; M. Lejeune) ( MRAC) .

ETYMOLOGY: The species is named in hon­ or of the reverend M. Lejeune, who collected the type specimens.

DIAGNOSIS: Males of H. lejeunei are rec­

78 BULLETIN AMERICAN MUSEUM OF NATURAL HISTORY NO. 256

flap. Females are close to those of H. falcatus and H. narcissus but differ from both species by the entrances of the IDs, which are separated by more than half the width of the entire vulva in H. lejeunei .

MALE: Measurements. Total length 2.57; carapace 1.16 long, 0.97 wide; length of fe: I 0.95, II 1.03, III 0.78, IV 1.16. Leg spination. Fe: I rv 2; IV plt 0 rlt 0; ti: I, II vsp 6; mt: III plt 1 vt 0 rlt 0; IV plt 1 vt 1 rlt 1. Coloration. Carapace orange yellow, lighter at the fovea. Chelicerae, legs, and sternum yellow. Abdomen yellowish white, no pat­ dorsal rim, thus delimiting smaller proximal triangle, and with small tooth­shaped anterior spike, pointing inward; cymbium with large, ill­defined retrolateral bend with series of widely spaced long setae; sperm duct with wide basal part and not much narrower distal part with shallow turn just in front of embolus; MA large, curved down and sickle shaped and with large, thin indented flap along dorsal median margin; embolus with fairly broad, triangular base, long, whiplike, looped over 450° (fig. 24a, b).

FEMALE: Measurements. Total length

2000 BOSSELAERS AND JOCQUÉ: HORTIPES 79

spination. Fe: I rv 2; IV plt 0 rlt 0; ti: I, II vsp 6; mt: III plt 1 vt 0 rlt 0; IV plt 1 vt 1 rlt 1. Coloration. Carapace orange brown, chelicerae, and sternum yellow, legs orange yellow. Abdomen peach, no pattern. Genitalia. Epigyne a slightly curved transversal slit (fig. 24c). Vulva: entrances of IDs separated by more than half the width of entire vulva; ID consisting of wide and very thickwalled, looped first stretch associated with gland and connected to ST1 through long and tortuous duct consisting of several circular and horseshoe loops; ST1 separated by at least their own diameter (fig. 26a, b).

OTHER MATERIAL EXAMINED: 16 in humic substrate in forest, Itombwe , Uvira region , Mulenge station, Nyalengwe, elev. 2300 m, Kivu, Congo S03°07', E29°00' (November 1959; N. Leleup) ( MRAC) ; 1♀ by sifting forest litter, elev. 2300 m, INRS site, 4 km W of Pindura, Nyungwe Forest , Rwanda S02°29', E29°13' (7 November 1985; Jocque´, Nsengimana and Michiels) ( MRAC) .

VARIABILITY: The shape of the sickleshaped RTA process and the exact course of the coils and loops of ID are somewhat variable.

DISTRIBUTION: Kivu, Congo and SW Rwanda, between elev. of 1700 and 2300 m.

Figures

Map 3. Distribution of Hortipes species in the Kivu region. Hortipes amphibolus D, H. auriga., H. aurora •, H. echo O, H. falcatus ^, H. hastatus, H. horta V, H. lejeunei Δ, and H. narcissus v.

Fig. 24. a–c. Hortipes lejeunei, new species. a, b. Male left palp, ventral and retrolateral views. c. Epigyne. d–f. Hortipes narcissus, new species. d, e. Male left palp, ventral and retrolateral views. f. Epigyne. g–i. Hortipes machaeropolion, new species. g, h. Male left palp, ventral and retrolateral views. i. Epigyne. j. Hortipes puylaerti, new species, epigyne. k. Hortipes chrysothemis, new species, epigyne. Scale lines: 0.25 mm.

Fig. 26. a, b. Hortipes lejeunei, new species. a. Vulva, ventral view. b. Vulva, schematic representation. c. Hortipes chrysothemis, new species, vulva, ventral view. d. Hortipes angariopsis, new species, vulva, ventral view. e. Hortipes puylaerti, new species, vulva, ventral view. f. Hortipes machaeropolion, new species, vulva, ventral view. Arrow indicates ID entrance. Scale line: 0.1 mm.