Guadana arawak, 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 : 407-411

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 ).

Female: unknown.

Distribution. Only known from the type locality in the French Guiana ( 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 57−66. Male, left palp, DTA, ventral, detail. 57 Guadana alpahuayo sp. n., 58 Guadana arawak sp. n., 59 Guadana manauara, 60 Guadana muirapinima sp. n., 61 Guadana neblina, 62 Guadana panguana, 63 Guadana quillu, 64 Guadana tambopata, 65 Guadana ucayali sp. n., 66 Guadana urucu. Scale lines: 1 mm. rm—ridged margin; vk—ventral keel.

FIGURES 67−76. Male, left palp, embolus, ventral, detail. 67 Guadana alpahuayo sp. n., 68 Guadana arawak sp. n., 69 Guadana manauara, 70 Guadana muirapinima sp. n., 71 Guadana neblina, 72 Guadana panguana, 73 Guadana quillu, 74 Guadana tambopata, 75 Guadana ucayali sp. n., 76 Guadana urucu. Scale lines: 1 mm. bp—basal projection of the embolus; sk—subdistal keel.

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 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).