Helvetia rinaldiae, Gustavo R. S. Ruiz & Antonio D. Brescovit, 2008

Gustavo R. S. Ruiz & Antonio D. Brescovit, 2008, Revision of Helvetia (Araneae: Salticidae: Heliophaninae), Revista Brasileira de Zoologia 25 (1), pp. 139-147 : 146-147

Helvetia rinaldiae sp. nov.

Figs 21-22

Types. Female holotype from Serra do Cachimbo , Novo Progresso, Pará, Brazil, deposited in MPEG 2088 ; female paratype from Fazenda Gold Farm , Vitoriana , Botucatu, São Paulo, Brazil, 01.X.1986, I.M.P. Rinaldi & L.C. Forti leg., deposited in UBTU 2658 .

Etymology. The species is named in honour of the Brazilian arachnologist Isabella M.P. Rinaldi, who collected one of the type specimens.

Diagnosis. Females of this species can be easily distinguished from others by the wide deep epigynal atrium ( Figs 21 and 22 ).

Description. Female (holotype). Total length: 4.35. Carapace dark brown, 1.75 long, 1.10 wide, 0.65 high. Cephalic area black. Ocular quadrangle 0.85 long. Anterior eye row 0.90 wide and posterior 0.95 wide. Chelicera brown. Endite, labium and sternum dark brown. Legs 4132, yellow, I-II with longitudinal brown stripes. Length of femur: I 0.80, II 0.65, III 0.65, IV 1.00; patella + tibia: I 1.00, II 0.75, III 0.70, IV 1.15; metatarsus + tarsus: I 0.55, II 0.55, III 0.75, IV 0.95. Spination. Femur I, II, III, IV d1-1-1; tibia I, II v1 pr, III v2 di, IV v2 di, p1; metatarsus I, II v2-2, III, IV v1, p2di, r1di. Abdomen cream colored with a pair of wide longitudinal brown stripes laterally and a narrow longitudinal brown one; ventrally grayish. Epigynum as in figures 21 and 22. Spinnerets dark brown.

Male. Unknown.

Variation. Two females: total length: 4.35-4.45; carapace length: 1.75-1.80.

Additional material examined. BRAZIL, Pará: Novo Progresso ( Serra do Cachimbo , Campo de Provas Brigadeiro Velloso ), 1 female, 8.IX-25.V.2003, A.B. Bonaldo leg. ( IBSP 81049 , ex- MPEG 1364) .

Distribution. Known from the states of Pará and São Paulo, Brazil.

Note. This species has an epigynum much modified, but the remaining morphological characters are very similar to those of the group in which the type species is located. Its inclusion in the genus may be corroborated with the future description of the male.

Figures

Figures 21-24. Epigynum of (21-22) Helvetia rinaldiae: (21) ventral view̡ (22) dorsal view; (23-24) Helvetia roeweri: (23) ventral view̡ (24) dorsal view. Bars = 0.25 mm.