Sparianthina Banks, 1929

Rheims, Cristina A., 2021, The Neotropical genera Guadana Rheims, 2010 and Sparianthina Banks, 1929 (Araneae: Sparassidae: Heteropodinae), Zootaxa 5061 (3), pp. 401-431 : 421-422

Genus Sparianthina Banks, 1929

Sparianthina Banks, 1929: 80 (Type species Sparianthina selenopoides Banks by original designation).

Emended diagnosis. Species of Sparianthina resemble those of Guadana in having intermarginal denticles arranged in a row; two pairs of ventral spines on tibiae I−II and one lateral spine on each side of metatarsi I−II (see Jäger et al. 2009: figs 10, 33; Rheims 2010a: fig. 7); male palps with a strong dorsal tegular apophysis (DTA) ( Figs 57−66 , 94−102 ); and female palps with a long-toothed claw ( Jäger et al. 2009: figs 13, 64). Males are distinguished from those of the latter genus by the palps with DTA roundly blunt, bifid, or widened at tip ( Figs 94−102 ); and embolus with basal projection at the retrolateral or ventral side of the embolus ( Figs 103−111 ) (DTA acutely tapering and embolus with basal projection absent or at the prolateral side of the embolus in Guadana ). Females are distinguished by the epigyne with median septum smooth, without ledges or pockets ( Figs 83 , 112−116 ) (present in Guadana ) and vulva bearing glandular projection and fertilization ducts long ( Fig. 84 ; Jäger et al. 2009: figs 15, 29, 59; Rheims 2011: figs 5, 13) (glandular projection absent and fertilization ducts short in Guadana ).

Distribution. Southern Central America and Northern South America, with records in Costa Rica, Panamá, Colombia, Venezuela and Trinidad & Tobago ( Figs 117−118 ).

Composition. Ten species: Sparianthina adisi ; S. boyaca sp. nov.; S. deltshevi ; S. gaita ; S. milleri ; S. parang ; S. pumilla ; S. saaristoi ; S. selenopoides ; S. soca sp. nov.

Figures

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 94−102. Male, left palp, DTA, ventral, detail. 94 Sparianthina adisi, 95 Sparianthina deltshevi, 96 Sparianthina gaita, 97 Sparianthina milleri, 98 Sparianthina parang, 99 Sparianthina pumilla, 100 Sparianthina saaristoi, 101 Sparianthina selenopoides, 102 Sparianthina soca sp.n.. Scale lines: 1 mm.

FIGURES 103−111. Male, left palp, embolus, ventral, detail. 103 Sparianthina adisi, 104 Sparianthina deltshevi, 105 Sparianthina gaita, 106 Sparianthina milleri, 107 Sparianthina parang, 108 Sparianthina pumilla, 109 Sparianthina saaristoi, 110 Sparianthina selenopoides, 111 Sparianthina soca sp. n.. Scale lines: 1 mm. bp—basal projection; spp –spine-like projection.

FIGURES 83−88. 83−85 Sparianthina boyaca sp. n., female (MCZ 46472) (83 epigyne ventral, 84 vulva dorsal, 85 schematic course of internal duct system). 86−88 S. soca sp. n., male (MZSP 18829), left palp (86 prolateral, 87 ventral, 88 retrolateral). Scale lines: 1 mm. AA—anterior atrium; bp—basal projection of the embolus; C—conductor; dRTA—dorsal branch of RTA; DTA—dorsal tegular apophysis; E—embolus; FD—fertilization duct; GP—glandular projection; LL—lateral lobe; MS—me- dian septum; SP—spermathecae; tp—tegular projection; VTA—ventral tibial apophysis.

FIGURES 112−116. Female, epigyne. 112 Sparianthina gaita, 113 Sparianthina milleri, 114 Sparianthina parang, 115 Sparianthina pumilla, 116 Sparianthina selenopoides. Scale lines: 1 mm. AA—anterior atrium. Illustrations 113, 115, 116 modified from Jäger et al. 2009; 112, 114 from Rheims 2011 (internal structures visualized by transparency are omitted).

FIGURES 117−118. Distribution maps for Sparianthina spp. 117 (Sparianthina adisi, Sparianthina boyaca sp. n., Sparianthina gaita, Sparianthina milleri, Sparianthina parang); 118 (Sparianthina deltshevi, Sparianthina pumilla, Sparianthina saaristoi, Sparianthina selenopoides, Sparianthina soca sp. n.).