Sparianthina soca, 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 : 427

Sparianthina soca sp. n.

Figs 86−93 , 102 , 111

Type material: Holotype: ♂ from TRINIDAD & TOBAGO: Arima: Arima, Road to Blanchisseuse (-10.7061, -61.2914), 29 June 1999, R. Pinto da Rocha leg. ( MZSP 18829 ).

Etymology. The specific name refers to a type of dance music common in Trinidad, which is a mix of Calypso, Indian music and rhythms; noun in apposition.

Diagnosis. Males of S. soca sp. n. resemble those of S. pumilla by the embolus with a bifid basal projection ( Figs 108, 111 ). They are distinguished from the latter species by the embolus with no additional projections (medial spine-like projection present in S. pumilla ) and by the basal projection with dorsal branch wide, concave and ventral branch shorter, laminar, distally rounded (dorsal branch tapering and ventral branch longer and distally blunt in S. pumilla ). Females are unknown.

Description. Male (holotype): Prosoma pale orange with brown margins and slightly darker thoracic striae; fovea pale brown; eye borders black. Chelicerae, legs and palps pale yellow, lighter than prosoma; legs with brownish gray marks at the base of spines. Labium pale brown, distally pale orange. Endites pale yellowish orange. Sternum pale yellowish orange with pale brown margins. Opisthosoma pale gray; dorsally with pair of rounded muscular impressions; ventrally with two posteriorly converging lines of muscle impressions; spinnerets pale yellow ( Figs 89−90 ). Total length 6.3. Prosoma: 2.8 long, 2.7 wide. Opisthosoma: 3.3 long, 1.9 wide. Eyes: diameters: 0.15, 0.20, 0.15, 0.25; interdistances: 0.15, 0.06, 0.26, 0.30, 0.29, 0.30. Legs (2143): I: 18.9 (4.9, 1.5, 5.5, 5.0, 2.0); II: 21.3 (5.5, 1.7, 6.2, 5.6, 2.3); III: 11.6 (4.3, 1.3, 4.2, 4.2, 1.6); IV: 17.9 (4.8, 1.2, 4.7, 5.3, 1.9). Palp: dRTA concave (slightly gutter-shaped in ventral view), longer than wide; DTA finger-like, gently curved retrolaterally at tip; embolus tapering; small, triangular tegular projection present, close to embolus base ( Figs 91−93 , 102 , 111 ).

Female: Unknown.

Distribution. Only known from the type locality in Trinidad & Tobago ( Fig. 118 ).

Figures

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 89−93. Sparianthina soca sp. n. male (MZSP 18829) 89−90 habitus (89 dorsal, 90 ventral); 91−93 left palp (91 prolateral, 92 ventral, 93 retrolateral). Scale lines: 89−90: 2 mm; 91−93: 1 mm.

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 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.).