Caayguara ajuba, Rheims, Cristina A., 2010

Rheims, Cristina A., 2010, Caayguara, a new genus of huntsman spiders from the Brazilian Atlantic Forest (Araneae: Sparassidae), Zootaxa 2630, pp. 1-29 : 11-12

publication ID	https://doi.org/ 10.5281/zenodo.198317
DOI	https://doi.org/10.5281/zenodo.6209410
persistent identifier	https://treatment.plazi.org/id/03CF8789-FFAA-0701-FF22-FEE410F8E35A
treatment provided by	Plazi
scientific name	Caayguara ajuba
status	sp. nov.

Treatment

Caayguara ajuba View in CoL sp. nov.

Figs 29–33 View FIGURES 29 – 33 , 74 View FIGURES 71 – 82 , 84 View FIGURE 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.

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 View FIGURES 24 – 28 ; 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 View FIGURES 29 – 33 , dp) and the larger and more widened distal region of the embolus ( Fig. 29 View FIGURES 29 – 33 ). The females resemble those of C. cupepemassu sp. nov. by the rounded shape of the median septum of the epigynum ( Figs 31 View FIGURES 29 – 33 , 41 View FIGURES 39 – 43 ), 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 View FIGURES 29 – 33 ) and by the vulva with the posterior part of the copulatory duct at a more anterior position ( Fig. 32 View FIGURES 29 – 33 ).

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 View FIGURES 71 – 82 ): RTA simple with no basal lobe and very slightly pronounced subdistal lobe ( Fig. 30 View FIGURES 29 – 33 , sl); dorsal projection short ( Fig. 30 View FIGURES 29 – 33 , dp). Tegulum smooth, with no projections. Embolus with distal region curved and bifid, with subdistal prolateral keel ( Fig. 29 View FIGURES 29 – 33 , 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 View FIGURES 29 – 33 ). Vulva: pp short, with only 3–4 lobes ( Fig. 32 View FIGURES 29 – 33 ); fd slightly thickened and transversal, almost twice as long as pp ( Figs 32–33 View FIGURES 29 – 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 View FIGURE 84 ).