Guadana mapia, Rheims, 2021

Rheims, Cristina A., 2021, The Neotropical genera Guadana Rheims, 2010 and Sparianthina Banks, 1929 (Araneae: Sparassidae: Heteropodinae), Zootaxa 5061 (3), pp. 401-431 : 411

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 ).

Figures

FIGURES 29−33. 29−30 Guadana mapia sp. n. female (IBSP 8825) (29 epigyne ventral, 30 vulva dorsal). 31−33 Guadana ucayali sp. n. male (MUSM), left palp (31 prolateral, 32 ventral, 33 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; E—embo- lus; ep—epigynal pocket; FD—fertilization duct; LL—lateral lobe; MS—median septum; SP—spermathecae; vRTA—ventral branch of RTA; VTA—ventral tibial apophysis.

FIGURES 34−37. 34−35 Guadana mapia sp. n. female (IBSP 8825) habitus (34 dorsal, 35 ventral). Guadana ucayali sp. n. male (MUSM) habitus (36 dorsal, 37 ventral). Scale lines: 2 mm.

FIGURES 38−42. 38−39 Guadana mapia sp. n. female (IBSP 8825) (38 epigyne ventral, 39 vulva dorsal). Guadana ucayali sp. n. male (MUSM), left palp (40 prolateral, 41 ventral, 42 retrolateral). Scale lines: 1 mm.

FIGURES 43−47. Guadana muirapinima sp. n. 43−45 male (MPEG 30837), left palp (43 prolateral, 44 ventral, 45 retrola- teral); 46−47 female (MPEG 30677) (46 epigyne ventral, 47 vulva dorsal). Scale lines: 1 mm. C—conductor; CO—copulatory opening; dRTA—dorsal branch of RTA; DTA—dorsal tegular apophysis; E—embolus; ep—epigynal pocket; FD—fertiliza- tion duct; LL—lateral lobe; MS—median septum; SP—spermathecae; tp—tegular projection; vRTA—ventral branch of RTA; VTA—ventral tibial apohysis.

FIGURES 77−80. Female, epigyne. 77 Guadana manauara, 78 Guadana quillu, 79 Guadana urucu, 80 Guadana tambopata. Scale lines: 1 mm. el—epigynal ledge; LL—lateral lobe; MS—median septum; ufl—U-shaped flap of median septum. Illustra- tions modified from Rheims 2010a (internal structures visualized by transparency are omitted).

FIGURES 81−82. Distribution maps for Guadana spp. 81 (Guadana alpahuayo sp. n., Guadana amendoim sp. n., Guadana arawak sp. n., Guadana manauara, Guadana mapia sp. n., Guadana muirapinima sp. n.); 82 (Guadana neblina, Guadana panguana, Guadana quillu, Guadana tambopata, Guadana ucayali sp. n., Guadana urucu).