Celaetycheus beiju, Polotow, Daniele & Brescovit, Antonio D., 2013

Polotow, Daniele & Brescovit, Antonio D., 2013, New species of the Neotropical spider genus Celaetycheus Simon, 1897 (Araneae: Ctenidae), Zootaxa 3637 (2), pp. 139-157 : 148-149

Celaetycheus beiju new species

Figures 8 , 14–15

Type material. Male holotype from Prado (Fazenda Furado) [17°20ʹ27ʺS, 39°13ʹ15ʺW], Bahia, Brazil, 13–26.IX.1970, CEPLAC, deposited in IBSP 163485. Paratypes: 1 female, same data as the holotype, deposited in IBSP 163486; 1 male, same locality as the holotype, 08.VIII.1970, CEPLAC, deposited in IBSP 163487; 1 male from Itamarajú (Fazenda Nossa Senhora das Neves) [17°02ʹ20ʺS, 39°31ʹ51ʺW], Bahia, Brazil, 09.X.1978, J.S. Santos, deposited in IBSP 163488.

Etymology. “ Beiju ” is a typical meal of the Brazilian culinary tradition, very popular in the northeast of Brazil. It is prepared with cassava starch as a kind of pancake or crepe, traditionally filled with coconut and cheese. The other common name for this meal is “Tapioca”.

Diagnosis. Males of Celaetycheus beiju sp. nov. ( Figs 8A–B ) can be distinguished from the remaining species of the genus by the male palp with an elongated and large median tegular projection pointing prolaterally and embolus with a basal projection. Females of C. beiju sp. nov. ( Figs 8C–D ) resemble those of C. caruru sp. nov. ( Figs 10C–D ) by the subtriangular shape of the median sector of the epigynum, but can be distinguished from those by the presence of elongated lateral lobes on the lateral sector of epigynum ( Fig. 8C ).

Description. Male (holotype IBSP 163485). Total length 3.4. Carapace 1.8 long, 1.55 wide. Eye diameters: AME 0.10, ALE 0.08, PME 0.16, PLE 0.16. Leg measurements: I: femur 1.65/ patella 0.63/ tibia 1.5/ metatarsus 1.55/ tarsus 0.85/ total 6.18; II: 1.55/ 0.65/ 1.25/ 1.45/ 0.75/ 5.65; III: 1.5/ 0.6/ 1.15/ 1.6/ 0.75/ 5.6; IV: 2.0/ 0.65/ 1.6/ 2.2/ 1.05/ 7.5. Leg formula 4123. Leg spination: tibia I–II v2-2 -2-2-2, p1-1, r1-1, III–IV v2-2 -2, p1-1, r1-1; metatarsus I–IV v2-2 -2, p1-1-1, r1-1-1. Palpal femur with short spines close to the proximal area; coxa and trochanter of leg II with short and thick spines ( Fig. 14 B). Palp ( Figs 8A–B ): tibia straight, slightly longer than cymbium; retrolateral tibial apophysis with bifid tip; ventral tibial apophysis short; short median apophysis with a prolateral cup-shaped projection; embolus thin and elongated.

Female (paratype IBSP 163486). Total length 4.7. Carapace 1.9 long, 1.7 wide. Eye diameters: AME 0.12, ALE 0.10, PME 0.17, PLA 0.17. Leg measurements: I: femur 1.45/ patella 0.65/ tibia 1.35/ metatarsus 1.3/ tarsus 0.6/ total 5.35; II: 1.5/ 0.65/ 1.2/ 1.25/ 0.6/ 5.2; III: 1.4/ 0.6/ 1.2/ 1.2/ 0.6/ 5.0; IV: 1.8/ 0.6/ 1.5/ 1.95/ 0.85/ 6.7. Leg formula 4123. Leg spination: tibia I–II v2-2 -2-2-2, p0, r0, III–IV v2-2 -2, p1-1, r1-1; metatarsus I–II v2-2 -2, p0, r0, III–IV v2-2 -2, p1-1-1, r1-1-1. Epigynum ( Figs 8C–D ): median sector, short and large, not covering the lateral lobes on the lateral fields; copulatory duct projected; head and base and head of spermathecae small; fertilization ducts thin.

Distribution. Prado and Itamarajú, State of Bahia, northeast Brazil ( Fig. 15 B).

Figures

FIGURE 14. Graphic representation of the distribution of ventral spines in the prosoma. A, Celaetycheus bobo sp. nov. and C. moqueca sp. nov.; B, Celaetycheus aberem sp. nov., C. beiju sp. nov. and C. caruru sp. nov.; C, Celaetycheus abara sp. nov., C. mungunza sp. nov.; D, Celaetycheus acaraje sp. nov. and C. vatapa sp. nov.

FIGURE 15. Collection localities of Celaetycheus species: A, South America. B – C, close-up, northeast Brazil, State of Bahia.

FIGURE 8. A – D Celaetycheus beiju sp. nov.: A – B Male palp (scale bar 1 mm); A. Ventral view; B. Retrolateral view. C – D Epigynum (scale bar 0.5 mm); C. Ventral view; D. Dorsal view.

FIGURE 10. A – D Celaetycheus caruru sp. nov.: A – B Male palp (scale bar 1 mm); A. Ventral view; B. Retrolateral view. C – D Epigynum (scale bar 0.5 mm); C. Ventral view; D. Dorsal view.