Caayguara juati Rheims, 2010, sp. nov.
Creators: name: Rheims, Cristina A.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Sparassidae
Caayguara
Caayguara juati

description: Caayguara juati sp. nov.
Figs 24–28, 73, 84
Type material. Holotype: ɞ from Reserva Biológica do Una [15°16' S; 39°04' W], Una, Bahia, Brazil, 15–28 November 2000, A. D. Brescovit et al. leg. (IBSP 48005). Paratypes: 3ɞ, 5Ƥ, with the same data as holotype (IBSP 45108; 47995; 48001; SMF; MZSP 31785–31786).
Additional material examined. BRAZIL. Bahia: 2Ƥ, Ilhéus [14°49' S; 39°02' W], Reserva do CEPLAC, (IBSP 19111); 1ɞ, Jussari [15°10' S; 39°29' W], Reserva Natural da Serra do Teimoso (IBSP 18603); 1ɞ, 6Ƥ, Una [15°16' S; 39°04' W], Reserva Biológica do Una (IBSP 47911–47912; 47993; 47996– 47997; 48003); Espírito Santo: 7Ƥ, Santa Teresa [19°55' S; 40°36' W], Reserva Biológica Augusto Ruschi (IBSP 121310; 121578; 121645); Minas Gerais: 1Ƥ, Alto Caparaó [20°25' S; 41°52' W], Parque Nacional do Caparaó (IBSP 54070).
Etymology. The specific name is a noun in apposition taken from the Tupi Indian language that means “spine” and refers to the spine-like dorsal process of the RTA of the male palp.
Diagnosis. The males of Caayguara juati sp. nov. resemble those of C. ajuba sp. nov. and C. apiaba sp. nov. by the general conformation of the palp, with the RTA showing a single subdistal ventral lobe and a slender dorsal projection (Figs 24–25; 29–30, 34–35; vl, dp) and by the prolateral subdistal keel on the embolus (Figs 24, 29, 34; sk). It can be distinguished from the two latter species by the very long and spinelike dorsal projection (Fig. 24; dp) in the male palp. The females resemble those of C. apiaba sp. nov. by the triangular shape of the median septum of the epigynum (Figs 26, 36), but are distinguished from it by having a larger median septum and more divergent lateral borders, forming an obtuse angle (Fig. 26) and by the vulva with smaller number of lobes in the posterior part of the copulatory duct (Fig. 27).
Description. Male (IBSP 48005): Dorsal shield of prosoma orange with faint brown markings laterally in front of coxae I. Fovea brown and eye borders black. Chelicerae and pedipalps orange. Legs orange with brown spots at the base of spines. Sternum pale yellow with pale orange margins. Labium and endites pale orange, distally pale yellow. Opisthosoma pale yellow, dorsally mottled with small white spots. Total length 7.2. Prosoma: 2.9 long, 2.8 wide. Opisthosoma: 4.0 long, 2.0 wide. Eye diameters: 0.24, 0.20, 0.16, 0.22; interdistances: 0.14, 0.02, 0.22, 0.22, 0.16, 0.12. Leg measurements: I: 23.9 (6.1, 1.8, 7.0, 6.8, 2.2); II: 28.7 (7.2, 2.0, 8.4, 8.4, 2.7); III: 17.2 (4.9, 1.5, 4.7, 4.7, 1.4); IV: 19.6 (5.5, 1.4, 5.2, 5.8, 1.7). Spination follows the generic pattern. Palp (Fig. 73): RTA with no basal lobe and very slightly pronounced subdistal lobe (Fig. 25, dl). Tegulum smooth, with no projections. Embolus with distal region strongly curved and bifid, with small triangular subdistal projection (Fig. 24, sp) and small subdistal prolateral keel (Fig. 24, sk); pars pendula inconspicuous.
Female (IBSP 48001): Coloration pattern as in male. Total length 8.2. Prosoma: 3.2 long, 3.0 wide. Opisthosoma: 4.8 long, 2.0 wide. Eye diameters: 0.24, 0.22, 0.16, 0.22; interdistances: 0.16, 0.06, 0.28, 0.28, 0.14, 0.14. Leg measurements: I: 17.9 (4.9, 1.8, 5.0, 4.7, 1.5); II: 21.4 (5.8, 2.0, 6.0, 5.8, 1.8): III: 13.9 (4.1, 1.5, 3.7, 3.5, 1.1); IV: 15.5 (4.5, 1.5, 4.0, 4.2, 1.3). Spination follows the generic pattern. Epigynum: epigynal field rounded anteriorly, wider than long; median septum triangular, wider than long; touching part of lateral lobes as long as median septum, slightly divergent posteriorly (Fig. 26). Vulva: pp with 4–5 linearly arranged lobes (Fig. 27); fd slender, slightly oblique, shorter than pp (Figs 27–28).
Variation. Males (n = 8): total length 6.7–7.6; prosoma 2.7–3.2; femur I 5.7–6.8. Females (n = 9): total length 7.2–9.8; prosoma 2.9–3.7; femur I 4.5–5.3.
Distribution. Northeastern and southeastern Atlantic forest, from southern Bahia to Espírito Santo (Fig. 84).
description: Published as part of Rheims, Cristina A., 2010, Caayguara, a new genus of huntsman spiders from the Brazilian Atlantic Forest (Araneae: Sparassidae), pp. 1-29 in Zootaxa 2630 on pages 9-11, DOI: 10.5281/zenodo.198317