Scytodes vieirae, Rheims & Brescovit, 2000

Rheims, Cristina A. & Brescovit, Antonio D., 2000, Six new species of Scytodes Latreille, 1804 (Araneae, Scytodidae) from Brazil, Zoosystema 22 (4), pp. 719-730 : 726-728

Scytodes vieirae n. sp.

( Fig. 4 A-C)

TYPE MATERIAL. — Parque Nacional da Serra do Divisor. Acre, 23.XI.1996, R. S. Vieira, 1 holotype ( IBSP 23043 ) ; 24.III.1996, 1 paratype ( IBSP 12300 ) ; 23.II.1994, 1 paratype ( INPA) .

Reserva de Campina. Manaus, Amazonas, 7.XII.1973, L. Albuquerque, 1 paratype ( INPA).

ETYMOLOGY. — The specific name is a patronym in honour of the collector of most of the types.

MATERIAL EXAMINED. — Only the types.

DISTRIBUTION. — Northern Brazil (States of Acre and Amazonas).

DIAGNOSIS. — The male of Scytodes vieirae n. sp. differs from the other species, here described, in the bifid distal area of the bulb ( Fig. 4B, C ).

DESCRIPTION

Male (IBSP 23043)

Carapace with U-shaped black pattern. Pedipalps yellow with few irregular brown stains. Labium and endites brownish. Sternum cream coloured with brownish margins at base of each leg, extending along slight grooves toward centre. Legs with two longitudinal black stripes along ventral face of femur and single longitudinal stripe along dorsal face of tibia and metatarsus. Irregular stains on prolateral face of femur. Abdomen cream coloured with black dorsal pattern consisting of three posterior groups of transversal markings and irregular anteriorly scattered stains ( Fig. 4A ).

Total length 3.75. Carapace slightly arched, 1.87 long, 1.62 wide. Eye diameters: pme 0.14, ale 0.12, ple 0.14. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Sternum 1.04 long, 0.80 wide.

Cymbium with long, slender distal spine. Bulb 0.30 long with a strong median constriction ( Fig. 4B, C ). Abdomen 1.87 long, 1.25 wide, rounded, covered with large feathery hairs.

Legs. I, femur 4.37; patella 0.50; tibia 4.75; metatarsus 6.12; tarsus 0.75; total 16.49. II, 3.00; 0.50; 2.25; 3.37; 0.50; 9.62. III, 1.87; 0.37; 1.62; 1.87; 0.50; M6.23. IV, 2.87; 0.50; 2.75; 3.12; 0.62; 9.86. Palpal femur presenting very short, thick stridulatory pick with round, projected socket.

Female

Unknown.

Variation

Four males. Total length 2.37-3.75; carapace 1.25-1.85; femur I 3.12-4.37; bulb 0.30-0.38.

Figures

FIG. 4. — A-C, Scytodes vieirae n. sp.; A, male body, dorsal view; B, male left palpus, retrolateral view; C, male left palpus, prolateral view; D-F, Scytodes mapia n. sp.; D, female carapace, dorsal view; E, female epygine, ventral view; F, female epygine, dorsal view; G, H, Scytodes altamira n. sp.; G, male left palpus, retrolateral view; H, male left palpus, prolateral view. Scale bars: 0.25 mm.