Caayguara juati, 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: 9-11

publication ID

http://doi.org/ 10.5281/zenodo.198317

persistent identifier

http://treatment.plazi.org/id/03CF8789-FFA8-0700-FF22-FAF114C6E62F

treatment provided by

Plazi

scientific name

Caayguara juati
status

sp. nov.

Caayguara juati  sp. nov.

Figs 24 –28View FIGURES 24 – 28, 73View FIGURES 71 – 82, 84View FIGURE 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: 3 ɞ, 5 Ƥ, with the same data as holotype ( IBSP 45108; 47995; 48001; SMF; MZSP 31785–31786).

Additional material examined. BRAZIL. Bahia: 2 Ƥ, Ilhéus [14 ° 49 ' S; 39 °02' W], Reserva do CEPLAC, ( IBSP 19111); 1 ɞ, Jussari [15 ° 10 ' S; 39 ° 29 ' W], Reserva Natural da Serra do Teimoso ( IBSP 18603); 1 ɞ, 6 Ƥ, Una [15 ° 16 ' S; 39 °04' W], Reserva Biológica do Una ( IBSP 47911–47912; 47993; 47996– 47997; 48003); Espírito Santo: 7 Ƥ, Santa Teresa [19 ° 55 ' S; 40 ° 36 ' W], Reserva Biológica Augusto Ruschi ( IBSP 121310; 121578; 121645); Minas Gerais: 1 Ƥ, 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 24–25View FIGURES 24 – 28; 29 –30, 34– 35; vl, dp) and by the prolateral subdistal keel on the embolus ( Figs 24View FIGURES 24 – 28, 29View FIGURES 29 – 33, 34View FIGURES 34 – 38; sk). It can be distinguished from the two latter species by the very long and spinelike dorsal projection ( Fig. 24View FIGURES 24 – 28; 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 26View FIGURES 24 – 28, 36View FIGURES 34 – 38), but are distinguished from it by having a larger median septum and more divergent lateral borders, forming an obtuse angle ( Fig. 26View FIGURES 24 – 28) and by the vulva with smaller number of lobes in the posterior part of the copulatory duct ( Fig. 27View FIGURES 24 – 28).

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. 73View FIGURES 71 – 82): RTA with no basal lobe and very slightly pronounced subdistal lobe ( Fig. 25View FIGURES 24 – 28, dl). Tegulum smooth, with no projections. Embolus with distal region strongly curved and bifid, with small triangular subdistal projection ( Fig. 24View FIGURES 24 – 28, sp) and small subdistal prolateral keel ( Fig. 24View FIGURES 24 – 28, 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. 26View FIGURES 24 – 28). Vulva: pp with 4–5 linearly arranged lobes ( Fig. 27View FIGURES 24 – 28); fd slender, slightly oblique, shorter than pp ( Figs 27–28View FIGURES 24 – 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. 84View FIGURE 84).

IBSP

Instituto Biologico de Sao Paulo

SMF

Forschungsinstitut und Natur-Museum Senckenberg

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Caayguara