Guadana amendoim, 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 : 407

Guadana amendoim sp. n.

Figs 15−16 , 20−21 , 24−25

Type material: Holotype: ♀ from BRAZIL: Acre: Senador Guiomard, Reserva Extrativista de Catuaba [-10.0667, -67.6167], 2002, E. Morato et al. leg. ( IBSP 98083 ) . Paratype: 1♀, same data as holotype ( IBSP 135243 ) .

Etymology. The specific name means peanut in Portuguese and refers to a traditional festival (Festival do Amendoim) from Senador Guiomard, type locality of the species; noun in apposition.

Diagnosis. Females of G. amendoim sp. n. resemble those of G. alpahuayo sp. n. and G. manauara by the epigyne with MS bearing pair of epigynal pockets ( Figs 4 , 15 , 77 ). They are distinguished in having the pockets separated and opening posteriorly ( Figs 15 , 24 ) (medially connected and opening anteriorly in the latter species). Males are unknown.

Description. Female (holotype): Prosoma pale brownish orange with sub-marginal pale brown stripes and two small irregular pale brown marks at the base of cephalic region; fovea and thoracic striae pale brown; eye borders black. Chelicerae, legs and palps pale orange with small brown spots. Labium brown. Endites pale yellowish-cream, darker at base; sternum pale yellowish-orange with brown margins. Opisthosoma pale gray; dorsally with lighter lateral margins with few whitish guanine spots and two pairs of rounded brown muscle impressions; ventrally with scattered whitish guanine spots and pair of curved lines of muscle impressions; spinnerets pale yellowish orange ( Figs 20−21 ). Total length 7.5. Prosoma: 3.1 long, 3.2 wide. Opisthosoma: 4.2 long, 3.5 wide. Eyes: diameters: 0.17, 0.20, 0.15, 0.22; interdistances: 0.13, 0.06, 0.31, 0.26, 0.27, 0.24. Legs (2143): I: 13.9 (4.0, 1.4, 4.0, 3.3, 1.2); II: 15.6 (4.6, 1.5, 4.5, 3.7, 1.3); III: 11.9 (3.7, 1.2, 3.1, 2.9, 1.0); IV: 12.6 (3.7, 1.0, 3.3, 3.4, 1.2). Epigyne: epigynal field slightly wider than long with lateral muscle attachment bands; MS squared, slightly longer than wide; paired epigynal pockets two times wider than long ( Figs 15 , 24 ). Vulva: internal ducts running anteriad from CO then posteriad to SP; SP oval; FD antero-laterad (mating plugs blocking CO)( Figs 16 , 25 ).

Male. Unknown.

Variation. Females (n = 2): total length 7.5−8.2; prosoma length 3.0−3.1.

Distribution. Only known from the type locality in northwestern Brazil ( Fig. 81 ).

Figures

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.

FIGURES 1−5. Guadana alpahuayo sp. n. 1−3 male (holotype), left palp (1 prolateral, 2 ventral, 3 retrolateral); 4−5 female (paratype, IBSP 165059) (4 epigyne ventral, 5 vulva dorsal). Scale lines: 1 mm. bp—basal projection of the embolus; C—con- ductor; CO—copulatory opening; dRTA—dorsal branch of RTA; DTA—dorsal tegular apophysis; E—embolus; ep—epigynal pocket; FD—fertilization duct; LL—lateral lobe; MS—median septum; sc—scape-like projection; SP—spermathecae; vRTA— ventral branch of RTA; VTA—ventral tibial apophysis.

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).