Caayguara, a new genus of huntsman spiders from the Brazilian Atlantic Forest (Araneae: Sparassidae) Author Rheims, Cristina A. text Zootaxa 2010 2630 1 29 journal article 10.5281/zenodo.198317 197f64b7-86ce-4a89-bd9e-6835bc2ed52a 1175-5326 198317 Caayguara ajuba sp. nov. Figs 29–33 , 74 , 84 Type material. Holotype : ɞ from Reserva Biológica do Córrego do Veado, Pinheiros [ 18°20' S ; 40°10' W ], Espírito Santo, Brazil , 21–23 October 2005 , T. Souza et al . leg. ( IBSP 134919). Paratypes : 1ɞ, with the same data as holotype ( IBSP 135052); 3ɞ, 3Ƥ, Parque Estadual de Itaúnas [ 18°25' S ; 39°42' W ], Conceição da Barra, 15 December 2002 – 6 March 2003 , Equipe Biota leg. ( IBSP 54308; 54310–54311; 54317; MZSP 31789–31790); 1Ƥ, Reserva Florestal da Vale do Rio Doce, Linhares [ 19°23' S ; 40°04' W ], 19–25 August 1997 , A. D. Brescovit et al. leg. ( IBSP 12804); all from Espírito Santo, Brazil . Additional material examined. BRAZIL . Bahia : 1ɞ, Porto Seguro, Parque Nacional do Monte Pascoal [ 16°27' S ; 39°03' W ] ( IBSP 18512); Espírito Santo : 2Ƥ, Colatina [ 19°32' S ; 40°37' W ], Rio São José ( MZSP 10266). Etymology. The species name is a noun in apposition taken from the Tupi Indian language that means “yellow” and refers to the coloration pattern of the specimens. FIGURES 29–33. Caayguara ajuba sp. nov. 29 male, left palp, ventral view (sk = subdistal keel; VTA = ventral tibial apophysis); 30 ditto, retrolateral view (dp = dorsal projection; sl = subdistal lobe); 31 female, epigynum, ventral view; 32 ditto, vulva, dorsal view; 33 schematic course of internal duct system. Scale lines: 0.5 mm. Diagnosis. The males of Caayguara ajuba sp. nov. resemble those of C. juati sp. nov. and C. apiaba sp. nov. by the general conformation of the palp, with the RTA with a single subdistal ventral lobe and dorsal projection ( Figs 24–25 ; 29–30, 34–35, sl, dp). It can be distinguished from the two latter species by the smaller dorsal projection of the RTA ( Fig. 30 , dp) and the larger and more widened distal region of the embolus ( Fig. 29 ). The females resemble those of C. cupepemassu sp. nov. by the rounded shape of the median septum of the epigynum ( Figs 31 , 41 ), but are distinguished from the latter by the smaller size of the median septum, by the touching part of the lateral lobes only slightly shorter than median septum ( Fig. 31 ) and by the vulva with the posterior part of the copulatory duct at a more anterior position ( Fig. 32 ). Description. Male (IBSP 134919): Dorsal shield of prosoma yellow, slightly darker along fovea; eye borders black. Chelicerae, legs and pedipalps yellow. Sternum cream colored with pale orange margins. Labium and endites pale orange. Opisthosoma pale orange. Dorsally with two small clusters of white marks on anterior half and one large median cluster on posterior half. Ventrally mottled with white spots laterally. Total length 6.9. Prosoma: 2.8 long, 2.7 wide. Opisthosoma: 4.0 long, 1.9 wide. Eye diameters: 0.26, 0.22, 0.16, 0.22; interdistances: 0.14, 0.02, 0.24, 0.22, 0.18, 0.14. Leg measurements: I: 24.2 (6.2, 1.9, 7.1, 6.8, 2.2); II: 26.4 (6.8, 1.8, 7.8, 7.5, 2.5); III: 17.3 (4.9, 1.6, 4.8, 4.7, 1.3); IV: 5.5, 1.5, 5.4, 5.8, 1.5). Spination follows the generic pattern. Palp ( Fig. 74 ): RTA simple with no basal lobe and very slightly pronounced subdistal lobe ( Fig. 30 , sl); dorsal projection short ( Fig. 30 , dp). Tegulum smooth, with no projections. Embolus with distal region curved and bifid, with subdistal prolateral keel ( Fig. 29 , sk) and no subdistal retrolateral projection; pars pendula inconspicuous. Female (IBSP 12804): Coloration pattern as in male except opisthosoma dorsally mottled with brown spots. Total length 9.8. Prosoma: 4.1 long, 3.7 wide. Opisthosoma: 5.4 long, 2.9 wide. Eye diameters: 0.26, 0.24, 0.18, 0.24; interdistances: 0.20, 0.06, 0.36, 0.32, 0.22, 0.20. Leg measurements: I: 19.7 (5.3, 2.2, 5.7, 5.0, 1.5); II: 22.5 (6.0, 2.5, 6.3, 5.9, 1.8); III: 15.0 (4.5, 1.7, 3.9, 3.7, 1.2); IV: 17.1 (5.0, 1.8, 4.4, 4.5, 1.4). Spination follows the generic pattern. Epigynum: epigynal field rounded, slightly wider than long; median septum rounded ( Fig. 31 ). Vulva: pp short, with only 3–4 lobes ( Fig. 32 ); fd slightly thickened and transversal, almost twice as long as pp ( Figs 32–33 ). Variation. Males (n = 4): total length 6.4–7.2; prosoma 2.7–3.0; femur I 5.5–6.3. Females (n = 6): total length 7.7–11.2; prosoma 3.2–4.1; femur I 4.8–5.6. Distribution. Southeastern Atlantic Forest, from southern Bahia to Espírito Santo ( Fig. 84 ).