Uaica karipuna, Rheims, 2025

Rheims, Cristina A., 2025, Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae), European Journal of Taxonomy 989, pp. 24-49 : 37-39

Uaica karipuna gen. et sp. nov.

urn:lsid:zoobank.org:act:E0DF65B2-179D-40FB-9587-CBCFAAADBC0D

Figs 8–9 , 15

Diagnosis

Males of U. karipuna gen. et sp. nov. are distinguished from those of all congeners by the palps with T strongly projecting retroproximally and E arising at 5 o’clock position ( Figs 8D , 9B ) (T not projecting and E arising at 8:30 o’clock in the other species). Females are unknown.

Etymology

The specific epithet refers to the Karipuna indigenous people that currently inhabit an Indigenous Territory located in the municipalities of Porto Velho and Nova Mamoré, in Rondônia, Brazil; noun in apposition.

Type material

Holotype BRAZIL – Rondônia State • ♂; Porto Velho; [8.7500º S, 63.9000º W]; 15 Apr. 1996; Equipe IBSP/ SMNK leg.; IBSP 8691 .

Other material examined

BRAZIL • 2 juvs; same vial as holotype; IBSP 8691 .

Description

Male (holotype)

COLOR. Prosoma pale brown, darker along thoracic striae and lateral margins of cephalic region; fovea dark brown; eye borders black. Chelicerae pale brown as prosoma. Legs and pedipalps slightly lighter than prosoma. Labium brown, distally pale brown. Endites pale brow, distally lighter. Sternum orange brown with darker margins. Opisthosoma cream colored; dorsally with two pairs of faint whitish marbled marks along lateral margins of cardiac mark and six light brown chevron-like marks medially down posterior half; ventrally with pale brownish-yellow band with two parallel lines of muscle impressions. Spinnerets pale yellow ( Fig. 8A–B ).

MEASUREMENTS. Total length 7.6. Prosoma: length 3.2 long, 3.2 wide. Opisthosoma: 4.2 long, 2.2 wide. Eyes: diameters 0.24, 0.22, 0.16, 0.20; interdistances 0.18, 0.06, 0.34, 0.28, 0.14, 0.10. Legs (2143): I: 22.2 (5.9, 2.1, 6.3, 6.2, 1.7); II: 25.5 (7.0, 2.1, 7.4, 7.1, 1.9); III: 15.6 (4.6, 1.5, 4.2, 4.1, 1.2); IV: 18.8 (5.5, 1.5, 5.0, 5.3, 1.5).

PALP. RTA almost 2 × as long as wide, projecting away from tibia in ventral view and with curved tip in retrolateral view; ST visible prolaterally; sp running retrolaterally with strong medial indentation; C 2 × as long as wide, with very wide base; E filiform, longer than C ( Figs 8C–E , 9 ).

Female

Unknown.

Distribution

Only known from the type locality, in the state of Rondônia ( Fig. 15 ).

Figures

Fig. 8. Uaica karipuna gen. et sp. nov., ♂, holotype (IBSP 8691). A. Habitus, dorsal view. B. Habitus, ventral view. C. Left palp, prolateral view. D. Left palp, ventral view. E. Left palp, retrolateral view. Scale bars: A−B = 2.0 mm; C−D = 0.5 mm.

Fig. 9. Uaica karipuna gen. et sp. nov., ♂, holotype (IBSP 8691). A. Left palp, prolateral view; B. Left palp, ventral view. C. Left palp, retrolateral view. Abbreviations: C = conductor; E = embolus; RTA = retrolateral tibial apophysis; sp = spermophore; ST = subtegulum. Scale bars: 0.5 mm.

Fig. 15. Distribution map for species of the genus Uaica gen. nov. (Brazil).