Guadana manauara, 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 : 36

Guadana manauara sp. nov.

Figs 1–2 , 7–12 , 13–19 , 39

Type material: Holotype: ♂ from Reserva do Km 41 [03°06' S; 60°01' W], Manaus, Amazonas, Brazil, August 1999, A.S. Santos leg. (IBSP 36232) . Paratypes: 1♂, Fazenda Esteio [02°23' S; 59°52' W], 60km N Manaus, Amazonas , Brazil, 7 January 1986, B.C. Klein leg. (INPA) ; 1♂, same locality and collector, 4 December 1985 (INPA) ; 1♀, same locality and collector, 8 May 1985 (INPA) ; 1♀, Reserva Florestal Adolpho Ducke [02°57' S; 59°55' W], Manaus , Amazonas, Brazil, 5 March 1998, R. Ott leg. (MCTP 14764) ; 1♀, same locality, 18–28 March 1992, A.D. Brescovit leg. (MCN 21447) ; 1♂, 14–23 August 1991, A.D. Brescovit leg. (MCN 22017) ; 1♂, July 1971, L. Albuquerque leg. (INPA); 1♀, Reservas do PDBFF [02°19' S; 60°06' W], Manaus , Amazonas, Brazil, 2002, F.N.A.A. Rego leg. (IBSP 132122) ; 1♂, Parque Nacional da Serra do Divisor , Morro Queimado [07°07'– 09°24' S; 72°40'– 73°59' W], Acre, Brazil, 9 November 1996, R.S. Vieira leg. (IBSP 9163).

Etymology. The specific name is a noun in apposition taken from the Brazilian language that is used to denote a Manaus origin.

Diagnosis. Guadana manauara sp. nov. is distinguished from the remaining species of the genus by the male palp RTA with dorsal branch wide and slightly twisted distally and ventral branch truncated at tip, by the bulb with a bifid embolus with wide and rectangular base and long and slender tips ( Fig. 13 ), by the female epigynum with epigynal ledges transversal and fused ( Fig. 17 ) and by the vulva with rounded spermathecae ( Fig. 18 ).

Description. Male (IBSP 9163): Dorsal shield of prosoma yellow with pale brown markings laterally. Eye area slightly darker. Chelicerae pale yellow with brown spot at base. Pedipalps pale yellow. Legs pale yellow with brown spots at the base of spines. Sternum cream colored with pale brown markings. Labium and endites cream colored. Opisthosoma yellow. Dorsally with two pairs of round, orange muscular impressions. Laterally mottled with white spots and covered with dark hairs ( Fig. 1 ). Total length 7.1. Prosoma: 3.0 long, 3.0 wide. Opisthosoma: 3.7 long, 2.8 wide. Eye diameters: 0.22, 0.22, 0.14, 0.22; interdistances: 0.10, 0.02, 0.24, 0.24, 0.26, 0.22. Legs: I: 24.5 (6.3, 1.6, 7.0, 7.0, 2.6); II: 27.6 (7.0, 1.7, 8.1, 8.0, 2.8); III: 17.3 (4.8, 1.3, 4.7, 4.9, 1.6); IV: 19.7 (5.2, 1.2, 5.1, 6.2, 2.0). Spination follows the generic pattern, except tibia IV: d-1-0-1; metatarsus III: p1-1-1; r1-1-1. Palp: VTA triangular; DTA smooth; embolus curved prolaterally; conductor laminar and hyaline, distally involving tip of the embolus ( Figs 13–14 ).

Female (MCN 22017): Coloration pattern as in male ( Fig. 2 ). Total length 6.8. Prosoma: 2.9 long, 3.0 wide. Opisthosoma: 3.5 long, 2.8 wide. Eye diameters: 0.16, 0.18, 0.12, 0.22; interdistances: 0.12, 0.04, 0.26, 0.28, 0.26, 0.24. Legs: I: 16.3 (4.4, 1.6, 4.8, 4.1, 1.4); II: 17.7 (5.1, 1.6, 5.3, 4.3, 1.4); III: 12.7 (3.7, 1.2, 3.4, 3.2, 1.2); IV: 14.2 (4.0, 1.1, 3.7, 3.9, 1.5). Spination follows the generic pattern. Epigynum: epigynal field slightly wider than long; median septum longer than wide, widest posteriorly; lateral lobes with slightly triangular depressions laterally; anteriorly with pair of ill defined atria with lateral copulatory openings ( Fig. 17 ). Vulva: copulatory ducts long and slender, extending transversally towards each other then posteriorly to small rounded spermathecae; fertilization ducts short and hook-shaped, pointing anteriorly ( Figs 18–19 ).

Variation. Males (n = 6): total length 6.3–7.1; prosoma 2.7–3.0; femur I 5.9–6.4. Females (n = 3): total length 6.8–8.1; prosoma 2.9–3.4; femur I 4.3–4.8.

Distribution. Brazil: known from Amazonas and Acre ( 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 7–12. Guadana manauara sp. nov. 7 male, right chelicerae, ventral view; 8 male, endite, detail showing serrula; 9 female, pedipalp claw, retrolateral view; 10 male, metatarsus I, trilobate membrane, dorsal view; 11 male, tarsus I, claws, prolateral view; 12 male, epiandrium with epiandrous spigots, ventral view. Scale lines: 10 µm: 8, 10, 11; 100µm: 7, 9, 12.

FIGURES 13–19. Guadana manauara sp. nov. 13–14 Male, left palp (13 ventral, 14 retrolateral view); 15–16 Male, right palp (15 retrolateral, 16 prolateral); 17–18 Female (17 epigynum, ventral view; 18 vulva, dorsal view); 19 Schematic course of internal duct system. Scale lines: 0.5 mm.