Guadana urucu, Rheims, 2010

Rheims, Cristina Anne, 2010, A new genus of huntsman spiders from the Neotropical region (Araneae: Sparassidae: Heteropodinae), Zootaxa 2650 (1), pp. 33-46 : 44-45

Guadana urucu sp. nov.

Figs 3–4 , 34–39

Type material: Holotype: ♂ from Porto Urucu, Rio Urucu [04°50' 73" S; 65°02' 37" W], Coari Amazonas, Brazil, 24 September 2004, A.B. Bonaldo leg. (MPEG 2166) . Paratypes: 1♂, same locality as holotype, 22 July 2003, D.D. Guimarães leg. (MPEG 617) ; 1♀, same locality, 14 July 2003, A.B. Bonaldo leg. (MPEG 610) ; 1♂, same locality, 19 July 2003, A.B. Bonaldo leg. (IBSP 141841) ; 1♂, Rio Urucu, Igarapé mata 3 [04°33' S; 64°21' W], Coari, Amazonas, 14–25 August 1993, P.F. Bührmhein & N.O. Aguiar leg. (UA) .

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Guadana urucu sp. nov. is distinguished from the remaining species of the genus by the male palp with embolus with very long and slender tip and distally widened conductor ( Figs 34–35 ) and by the female epigynum with anterior bell-like pocket ( Fig. 36 ).

Description. Male (MPEG 2166): Dorsal shield of prosoma orange with brown variegated margins and a pair of brown marks at the base of cephalic region. Chelicerae orange with three small marks at base.

Pedipalps pale orange. Legs pale orange with pale gray marks at the base of spines. Opisthosoma pale yellow. Dorsally with bright orange hairs around muscular impressions ( Fig. 3 ). Total length 5.8. Prosoma: 2.8 long, 2.8 wide. Opisthosoma: 3.0 long, 2.0 wide. Eye diameters: 0.20, 0.20, 0.14, 0.24; interdistances: 0.10, 0.01, 0.22, 0.20, 0.20, 0.20. Legs: I: 22.3 (5.6, 1.5, 6.7, 6.3, 2.2); II: 25.0 (6.2, 1.6, 7.6, 7.2, 2.4); III: 15.6 (4.3, 1.2, 4.2, 4.4, 1.5); IV: 18.2 (4.7, 1.2, 4.8, 5.6, 1.9). Spination follows the generic pattern, except metatarsus III: p1- 1-1; r1-1-1. Palp: RTA with ventral branch slightly conical and dorsal branch wide, with distal curved projection; VTA very small and triangular; small, triangular tegular projection present at the base of embolus; DTA smooth; embolus curved prolaterally with very large and well developed base ( Figs 34–35 ).

Female (MPEG 610): Coloration pattern as in male ( Fig. 4 ). Total length 7.2. Prosoma: 3.0 long, 3.1 wide. Opisthosoma: 3.9 long, 3.0 wide. Eye diameters: 0.16, 0.20, 0.16, 0.24; interdistances: 0.14, 0.02, 0.28, 0.28, 0.26, 0.24. Legs: I: 16.3 (4.6, 1.5, 4.7, 4.0, 1.5); II: 17.9 (5.3, 1.7, 5.2, 4.2, 1.5); III: 12.8 (3.8, 1.3, 3.3, 3.2, 1.2); IV: 14.1 (4.1, 1.2, 3.6, 3.7, 1.5). Spination follows the generic pattern. Epigynum: epigynal field wider than long, rounded anteriorly; lateral lobes without projections; median septum longer than wide; epigynal ledges C-shaped, facing each other ( Fig. 36 ). Vulva: copulatory ducts extending transversally towards each other, posteriorly towards epigastric furrow and away from each other towards slightly convoluted spermathecae; fertilization ducts hook-shaped, pointing anteriorly ( Figs 37–38 ).

Variation. Males (n = 4): total length 5.5–6.5; prosoma 2.5–3.0; femur I 5.6–6.2.

Distribution. Only known from Coari, Amazonas, Brazil ( Fig. 39 ).

Figures

FIGURE 39. Distribution records for the species of Guadana gen. nov.

FIGURES 1–6. Habitus, dorsal view. 1–2 Guadana manauara sp. nov. (1 male, 2 female); 3–4 Guadana urucu sp. nov. (3 male, 4 female); 5 Guadana neblina sp. nov., male; 6 Guadana panguana sp. nov., male. Scale lines 1 mm.

FIGURES 34–38. Guadana urucu sp. nov. 34–35 Male, left palp (34 ventral, 35 retrolateral view); 36–37 Female (36 epigynum, ventral view, 37 vulva, dorsal view); 38 Schematic course of internal duct system. Scale lines: 0.5 mm.