The Neotropical genera Guadana Rheims, 2010 and Sparianthina Banks, 1929 (Araneae: Sparassidae: Heteropodinae) Author Rheims, Cristina A. text Zootaxa 2021 2021-11-05 5061 3 401 431 journal article 3577 10.11646/zootaxa.5061.3.1 72f4b355-ff3e-4ca2-b6be-b6ef2b406c6c 1175-5326 5649711 14E73644-BF88-4999-887D-827553A372E1 Guadana arawak sp. n. Figs 17−19 , 22−23 , 26−28 , 58 , 68 Type material: Holotype : ♂ from FRENCH GUIANA : Regina Commune : Nouragues National Reserve ( Research Station ) ( 4.0833 , -52.6667 ), 5 May 2010 , V . Vedel leg. ( MNHN ). Etymology. The specific name refers to the Arawak Indians, the first people known to inhabit French Guiana ; noun in apposition. Diagnosis. Males of G. arawak sp. n. resemble those of G. alpahuayo sp. n. by the palps with embolus bearing a subdistal keel at tip ( Figs. 67−68 ) and dRTA barely reaching the proximal margin of the alveolus ( Figs 2 , 18 ). They are distinguished from those of the latter species by the basal projection with jagged margin (smooth in the other species) ( Figs 18 , 68 ). Females are unknown. Description. Male ( holotype ): prosoma pale brownish orange; cephalic region with three longitudinal, pale brown stripes running from posterior eyes to fovea; thoracic region with pale brown marks laterally; fovea and thoracic striae brown; eye borders black; clypeus pale yellow with dark brown antero-lateral margins. Chelicerae pale yellow with rounded brown proximal marks. Legs and palps pale brownish yellow with brown spots at the base of spines. Labium and endites pale brownish-orange at base, distally pale yellow. Sternum pale yellowish cream colored with brown margins. Opisthosoma pale yellow with no distinctive pattern; dorsally with two large, oval muscle impressions; ventrally with pair of curved lines of muscle impressions ( Figs 22−23 ). Total length 6.1. Prosoma: 2.8 long, 2.8 wide. Opisthosoma: 3.1 long, 2.3 wide. Eyes: diameters: 0.18, 0.20, 0.16, 0.22; interdistances: 0.10, 0.02, 0.26, 0.22, 0.20, 0.18. Legs (2143): I: 19.8 (5.2, 1.5, 5.8, 5.3, 2.0); II: 21.4 (5.6, 1.5, 6.3, 6.0, 2.0); III: 14.1 (3.9, 1.1, 3.9, 3.9, 1.3); IV: 16.4 (4.3, 1.1, 4.4, 4.9, 1.7). Palp: vRTA triangular, similar in size to dRTA; dRTA distally bifid, with one branch tappering and the other laminar; DTA sinuous in ventral view, subdistally curved retrolaterally; conductor hyaline, same width throughout the entire length; embolus strongly curved prolaterally ( Figs 17−19 , 26−28 , 58 , 68 ). FIGURES 15−19. 15−16 Guadana amendoim sp. n. female (IBSP 135243) (15 epigyne ventral, 16 vulva dorsal). 17−19 Guadana arawak sp. n. male (MNHN), left palp (17 prolateral, 18 ventral, 19 retrolateral). Scale lines: 1 mm. bp—basal projection of the embolus; C—conductor; CO—copulatory opening; dRTA—dorsal branch of RTA; DTA—dorsal tegular apophysis; Eembolus; ep—epigynal pocket; FD—fertilization duct; mab—muscle attachment bands; mp—mating plug; SP—spermathecae; vRTA—ventral branch of RTA; VTA—ventral tibial apophysis. FIGURES 20−23. 20−21 Guadana amendoim sp. n. female (IBSP 135243) habitus (20 dorsal, 21 ventral). 22−23 Guadana arawak sp. n. male (MNHN) habitus (22 dorsal, 23 ventral). Scale lines: 2 mm. FIGURES 24−28. 24−25 Guadana amendoim sp. n. female (IBSP 135243) (24 epigyne ventral, 25 vulva dorsal). 26−28 Guadana arawak sp. n. male (MNHN), left palp (26 prolateral, 27 ventral, 28 retrolateral). Scale lines: 1 mm. Female: unknown. Distribution. Only known from the type locality in the French Guiana ( Fig. 81 ).