Caayguara ybytyriguara, 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: 18-20

publication ID

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

persistent identifier

http://treatment.plazi.org/id/03CF8789-FFB1-0719-FF22-F97117BAE6E7

treatment provided by

Plazi

scientific name

Caayguara ybytyriguara
status

sp. nov.

Caayguara ybytyriguara  sp. nov.

Figs 54 –58View FIGURES 54 – 58, 79View FIGURES 71 – 82, 86View FIGURE 86

Type material. Holotype: ɞ from Estação Biológica de Boracéia, Salesópolis [23 º 37 ' S; 45 º 52 ' W], São Paulo, Brazil, 18–24 May 2001, Equipe Biota leg. ( IBSP 54408). Paratypes: 5 ɞ, 5 Ƥ, with the same data as holotype ( IBSP 54414; 54504–54505; 54509–54510; SMF; MZSP 31780); 1 ɞ, 1 Ƥ, Vale do Jurubatuba [25 º 51 ' 53 " S; 46 º 18 ' 15.7 " W], Santos, São Paulo, March – December 2007, A.A. Nogueira leg. ( MZSP 31781).

Additional material examined. BRAZIL. São Paulo: 8 ɞ, 1 Ƥ, Caucaia do Alto [23 ° 37 ' S; 46 ° 55 ' W], Reserva Florestal do Morro Grande ( IBSP 124306–124307; 124330–124332; 124334; 124340; 124342; 124347); 2 Ƥ, Mogi das Cruzes [23 º 31 ' S; 46 º 11 ' W], Parque Natural Municipal da Serra do Itapety ( IBSP 54032; 54035); 45 ɞ, 14 Ƥ, Salesópolis, Estação Biológica de Boracéia [23 º 37 ' S; 45 º 52 ' W] ( IBSP 54401– 54403; 54405–54406; 54409–54413; 54417–54421; 54424–54426; 54503; 54507; 54577; 27083; 38297; 43279–43281; 130860; MZSP 17476); 7 ɞ, 1 Ƥ, 2 juveniles, Santo André [23 º 46 ' S; 46 º 19 ' W] Estação Biológica Alto da Serra de Paranapiacaba ( MZSP 20701; IBSP 23879; 52049; 52073); 1 ɞ, Santos [23 º 57 ' S; 46 º 19 ' W] ( IBSP 118408); 15 ɞ, 12 Ƥ, Vale do Jurubatuba [25 º 51 ' 53 " S; 46 º 18 ' 15.7 " W] ( IBSP 119754– 119756; 119758–119775); 1 ɞ, Peruíbe [24 º 25 ' S; 47 º03' W], Estação Ecológica Juréia-Itatins ( IBSP 13583).

Etymology. The specific name is a noun in apposition taken from the Tupi Indian language that means “mountain inhabitant”, and refers to the distribution of this species along the coastal mountains of São Paulo.

Diagnosis. The males of Caayaguara ybytyriguara  sp. nov. resemble those of C. itajucamussi  sp. nov. by the general conformation of the male palp, with RTA lacking both dorsal and ventral branches and embolus with a triangular subdistal projection ( Figs 49View FIGURES 49 – 53, 54View FIGURES 54 – 58; sp). They are distinguished from the latter by the RTA with a triangular subdistal lobe ( Figs 54–55View FIGURES 54 – 58; sl) and by the embolus with an inconspicuous pars pendula and small ventral keel ( Fig. 54View FIGURES 54 – 58; ppl, vk). The females are distinguished from the remaining species of the genus by the touching part of the lateral lobes more than twice as long as the small median septum ( Fig. 56View FIGURES 54 – 58).

Description. Male ( IBSP 54408): Dorsal shield of prosoma orange, slightly darker along fovea and thoracic striae. Chelicerae slightly darker than prosoma. Legs and pedipalps orange. Sternum cream colored with pale orange margins. Labium and endites grayish orange, distally cream colored. Opisthosoma brownish gray, dorsally with two pairs of small marks anteriorly and one large mark posteriorly. Total length 9.7. Prosoma: 4.2 long, 3.9 wide. Opisthosoma: 5.4 long, 2.7 wide. Eye diameters: 0.28, 0.28, 0.20, 0.26; interdistances: 0.14, 0.04, 0.30, 0.28, 0.12, 0.10. Leg measurements: I: 27.5 (7.1, 2.5, 7.7, 7.8, 2.4); II: 31.3 (8.2, 2.6, 9.0, 8.9, 2.6); III: 19.4 (5.8, 1.8, 5.2, 5.1, 1.5); IV: 21.8 (6.2, 1.9, 5.6, 6.3, 1.8). Spination follows the generic pattern. Palp ( Fig. 79View FIGURES 71 – 82): RTA with triangular subdistal lobe and no dorsal projection ( Figs 54–55View FIGURES 54 – 58). Embolus bifid, bent at tip ( Fig. 54View FIGURES 54 – 58).

Female ( IBSP 54504): Coloration pattern as in male, except opisthosoma orange brown, mottled with brown spots. Total length 11.2. Prosoma: 4.7 long, 4.3 wide. Opisthosoma: 6.6 long, 3.8 wide. Eye diameters: 0.30, 0.30, 0.20, 0.28; interdistances: 0.22, 0.06, 0.38, 0.34, 0.20, 0.14. Leg measurements: I: 21.0 (5.8, 2.6, 5.5, 5.4, 1.7); II: 6.7, 2.7, 6.5, 6.3, 1.9); III: 16.4 (5.0, 2.1, 4.1, 3.9, 1.3); IV: 17.9 (5.5, 2.0, 4.4, 4.6, 1.4). Spination follows the generic pattern, except tibiae I –II: d 1 - 0-1. Epigynum: epigynal field rounded anteriorly, slightly longer than wide; lateral lobes large; median septum small, wider than long ( Fig. 56View FIGURES 54 – 58). Vulva: pp longitudinal, 8–10 linearly arranged lobes; fd, transversal, almost 1.5 times longer than pp ( Fig. 57–58View FIGURES 54 – 58).

Variation. Males (n = 10): total length 8.1–10.5; prosoma 3.6–4.3; femur I 6.5–7.2. Females (n = 10): total length 7.9–11.6; prosoma: 3.7–4.8; femur I 4.6 –6.0.

Distribution. Known only from the state of São Paulo ( Fig. 86View FIGURE 86).

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