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

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

persistent identifier

http://treatment.plazi.org/id/03CF8789-FFAA-0701-FF22-FEE410F8E35A

treatment provided by

Plazi

scientific name

Caayguara ajuba
status

sp. nov.

Caayguara ajuba  sp. nov.

Figs 29 –33View FIGURES 29 – 33, 74View FIGURES 71 – 82, 84View 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: 1 ɞ, with the same data as holotype ( IBSP 135052); 3 ɞ, 3 Ƥ, 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); 1 Ƥ, 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: 1 ɞ, Porto Seguro, Parque Nacional do Monte Pascoal [16 ° 27 ' S; 39 °03' W] ( IBSP 18512); Espírito Santo: 2 Ƥ, 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 24–25View 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. 30View FIGURES 29 – 33, dp) and the larger and more widened distal region of the embolus ( Fig. 29View FIGURES 29 – 33). The females resemble those of C. cupepemassu  sp. nov. by the rounded shape of the median septum of the epigynum ( Figs 31View FIGURES 29 – 33, 41View 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. 31View FIGURES 29 – 33) and by the vulva with the posterior part of the copulatory duct at a more anterior position ( Fig. 32View 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. 74View FIGURES 71 – 82): RTA simple with no basal lobe and very slightly pronounced subdistal lobe ( Fig. 30View FIGURES 29 – 33, sl); dorsal projection short ( Fig. 30View FIGURES 29 – 33, dp). Tegulum smooth, with no projections. Embolus with distal region curved and bifid, with subdistal prolateral keel ( Fig. 29View 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. 31View FIGURES 29 – 33). Vulva: pp short, with only 3–4 lobes ( Fig. 32View FIGURES 29 – 33); fd slightly thickened and transversal, almost twice as long as pp ( Figs 32–33View 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. 84View FIGURE 84).

IBSP

Instituto Biologico de Sao Paulo

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Caayguara