Eustala eldorado, Poeta, Maria Rita Muniz, 2014

Poeta, Maria Rita Muniz, 2014, The orb-weaving spider genus Eustala Simon, 1895 (Araneae, Araneidae): eight new species, redescriptions, and new records, Zootaxa 3872 (5), pp. 440-466 : 452-454

Eustala eldorado new species

Figs 65–68 , 86

Type material. Holotype: ♂, Fazenda São José , Eldorado do Sul, Rio Grande do Sul, Brazil, 30°01’S, 51°36’W, 12.X.1998, L. Moura ( MCN 29742 ). Paratype; ♂, Cachoeira do Sul, Rio Grande do Sul, Brazil, 29°53’S, 52°55’W, 02.XII.1992, R.G. Buss ( MCTP 3674 ) .

Additional material examined. None.

Etymology. The specific name is a noum in apposition taken from the type locality.

Diagnosis. Palp of Eustala eldorado n. sp. ( Figs 65, 66 ) similar to those of E. guarani n. sp. ( Fig. 1 ) by the curved terminal apophysis in mesal view ( Fig. 65 ). Differs from this species by the conspicuous pointed tegular projection ( Fig. 66 ) and by the long and strongly sinuous embolus, in mesal view ( Fig. 65 ).

Description. Male (holotype, MCN 29742 ) : Carapace pale yellow with many setae near the thoracic furrow.

Sternum pale yellow with gray border. Abdomen diamond-shaped, with a small posterior hump, numerous setae, and two additional terminal humps ( Figs 67, 68 ). Dorsum pale yellow with a wide dark gray folium. Venter pale yellow with a well-defined dark gray band from the epigastric furrow to the spinnerets, with a circular median white patch. Legs yellow with brown bands. Total length 7.9. Carapace length 3.5, width 2.9. Leg formula 1243; length leg I: femur 5.1; patella+tibia 6.6; metatarsus 4.4; tarsus 0.7; total 16.8. Patella+tibia II 4.9; III 2.5; IV 4.5.

Female: Unknown.

Variation. Male (n=2): total 7.7–7.9; carapace length 3.5–3.7, width 2.8–2.9. Carapace and legs orange, legs with bands more or less wide. Inconspicuous abdominal humps.

Distribution. Brazil: Rio Grande do Sul ( Fig. 86 ).

Figures

FIGURES 65 – 74. Eustala eldorado n. sp. 65, 66, Palp (65, mesal; 66, ventral). 67, Male habitus, dorsal. 68, Male abdomen, lateral. Eustala ulecebrosa (Keyserling, 1892). 69 – 73, Epigynum (69, ventral; 70, posterior; 71, lateral; 72, posterior, cleared; 73, lateral, cleared). 74, Female habitus, dorsal. Abbreviations: A, terminal apophysis; E, embolus; Tp, tegular projection. Scale bars, 65, 66, 69 – 73, 0.25 mm; 67, 68, 1 mm; 74, 2 mm.

FIGURE 85 – 87. Records of the Eustala species. 85, Eustala guarani n. sp., E. catarina n. sp., E. ericae n. sp., and E. cidae n. sp. 86, Eustala lisei n. sp., E. cuia n. sp., E. farroupilha n. sp., and E. eldorado n. sp. 87, Eustala ulecebrosa (Keyserling, 1892), E. itapocuensis Strand, 1916, E. photographica Mello-Leitão, 1944, and E. mourei Mello-Leitão, 1947. Scale bars, 500 km.

FIGURES 1 – 9. Eustala guarani n. sp. 1, 2, Palp (1, mesal; 2 ventral). 3, Male habitus, dorsal. 4 – 8, Epigynum (4, ventral; 5, posterior; 6, lateral; 7, posterior, cleared; 8, lateral, cleared). 9, Female habitus, dorsal. Abbreviations: A, terminal apophysis; Asc, apex of scape; Bsc, base of scape; C, conductor; Cd, copulatory duct; E, embolus; Fd, fertilization duct; LP, lateral plate; MP, median plate; M, median apophysis; S, subterminal apophysis; Stp, spermathecae; st, stipe; r, radix; Tp, tegular projection. Scale bars, 1, 2, 4 – 8, 0.25 mm; 3, 9, 2 mm.