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 mapia sp. n. Figs 29−30 , 34−35 , 38−39 Type material: Holotype : ♀ from BRAZIL : Amazonas : Borba , Rio Mapiá [ -4.3833 , -59.5833 ], 22 April 1996 , Equipe IBSP / SMNK leg. ( IBSP 8825 ). Etymology. The specific name refers to the type locality; noun in apposition. Diagnosis. Females of S. mapia sp. n. resemble those of S. muirapinima sp. n. and S. urucu by the epigyne with MS bearing a single anterior epigynal pocket ( Figs 29 , 46 , 79 ). They are distinguished from those of S. muirapinima sp. n. by the pocket as wide as long (much wider than long in the latter species) and from S. urucu by the median septum roughly rectangular, with sinuous lateral margins (roughly trapezoid in the latter species) ( Fig. 29 ). Males are unknown. Description. Female ( holotype ): Prosoma pale brownish yellow with irregular brown marks between thoracic striae and at the base of cephalic region; fovea and thoracic striae brown; eye borders black. Chelicerae, legs and palps yellowish orange with faint pale brown marks at the base of spines and setae. Labium brown, distally orange brown. Endites yellowish cream colored, Sternum yellowish cream colored with brown margins. Opisthosoma dorsally brownish yellow with gray marks around pale heart mark and one pair of brown muscle impressions; ventrally brownish cream colored with two curved lines of muscle impressions. Spinnerets pale yellow ( Figs 34−35 ). Total length 6.8. Prosoma: 3.1 long, 3.2 wide. Opisthosoma: 3.6 long, 2.7 wide. Eyes: diameters: 0.19, 0.24, 0.17, 0.25; interdistances: 0.15, 0.05, 0.32, 0.30, 0.29, 0.30. Legs (2143): I: 16.6 (4.7, 1.5, 4.9, 4.0, 1.5); II: 18.6 (5.3, 1.7, 5.6, 4.5, 1.5); III: 13.2 (4.0, 1.0, 3.6, 3.3, 1.3); IV: 14.5 (4.3, 1.1, 3.8, 3.8, 1.5). Epigyne: epigynal field longer than wide; anterior epigynal pocket wider than long, opening posteriorly; MS longer than wide ( Figs 29 , 38 ). Vulva: internal ducts sinuous, running posteriad; SP u-shaped; FD short, anteriad ( Figs 30 , 39 ). Male. Unknown. Distribution. Only known from the type locality in northern Brazil ( Fig. 81 ).