Cibyra volta, Mielke & Grehan & Koike, 2025

Mielke, Carlos G. C., Grehan, John R. & Koike, Ricardo M., 2025, Review of the genus Cibyra Walker (Lepidoptera: Hepialoidea: Hepialidae) with descriptions of twenty-four new species from Brazil and Argentina, Zootaxa 5709 (1), pp. 1-74 : 41

Cibyra volta sp. nov.

urn:lsid:zoobank.org:act:

Pl. 8 : Figs 12–13 , Pl. 12 : Fig. 5 , Pl. 17 : Fig. 9 , Pl. 21 : Fig. 9

Type material. Holotype ♂ ( Pl. 8 : Fig. 13 ): / BRASIL: GO [ Goiás] Alto Paraíso, 1400 m, 1-6.xi.1996, V. O. Becker Col / 13.907 Col. C. Mielke [ JX215602 ]/ BC-CGCM/ DZ 52.598/ HOLOTYPUS, Cibyra volta C. Mielke, Grehan & Koike, 2024 / ( DZUP) .

Paratypes (in total 6 ♂): Brazil. Goiás. Alto Paraíso : same data as holotype ( CGCM 14.231 [ JX215636 ], 15.259, 15.614 [ JX215641 ]; CGCM); 3 ♂, São Jorge, Volta da Serra , 1020 m, 47°45′18.03′′ W, 14°10′7.34′′ S, 22.XI.2022 ( CGCM 45.693 , 46.355 , 46.938 ; DZUP) .

Diagnosis. This new species is easily distinguished from all other congenerics by the FW mottled pale brown with golden markings in the FW. The genitalia resemble the two previous species, but this species can be rapidly separated by i) emargination as an inverted trapeze of the posterior margin of the saccus while is V-shaped in C. agnes sp. nov. and U-shaped in C. alina sp. nov. ( Pl. 17 : Figs 7–9 ; see arrows), ii) the slightly protruded tergal lobes, while mesally projected in C. agnes sp. nov. and non-protruded in C. alina sp. nov. and iii) the inner side of the valvae are curved in C. volta sp. nov., while L-shaped in the two previous species.

Description. Male ( Pl. 8 : Figs 12–13 , Pl. 12 : Fig. 5 ). Forewing length: 14–17 mm, wingspan: 30–35 mm. Epiphysis absent.

Male genitalia ( Pl. 17 : Fig. 9 , Pl. 21 : Fig. 9 ). Tergal lobes slightly protruded posteriorly. Saccus with posterior margin as an inverted trapezoid mesally. Tegumen slightly sinuate. Pseudotegumen expanded ventrally, ribbed ventro-anteriorly. Fultura inferior as wide as long, constricted laterally, distally bilobed. Valvae inner side curved.

Female. Unknown.

Distribution. Endemic to the Chapada do Veadeiros, an elevated area within the Cerrado in central Brazil at altitudes between about 1000 and 1400 m ( Pl. 28 : Fig. 2 ). It is the northernmost record for the genus.

Etymology. Homonym in reference to the Santuário Volta da Serra, feminine, where some specimens were captured. It is treated as a noun in the nominative singular in apposition.

Remarks. In contrast to the previous species, C. volta sp. nov. is not highly variable, except for the FW golden markings, which can be variable in number, and the ground colour ranging from light brown to orangish-brown. The golden markings are also found in C. dorita , but the genitalia leave no doubt about its placement in this species-group. Allopatric to all congenerics.

Figures

PLATE 1. FIGURES 1−12. Cibyra spp. of ferruginosa species-group. Adults (dorsal): 1 (CGCM 33.377), 2 (CGCM 35.939), 3 (type no. 18604), 4 (CGCM 10.168), 5 (CGCM 27.547), 6 (CGCM 26.691), 7 (CGCM 23.321), 8 (CGCM 30.335), 9 (CGCM 30.343), 10 (CGCM 23.937), 11 (CGCM 42.000), 12 (CGCM 29.967). Depositories of the specimens: 1–2, 4–12 in CGCM; 3 in USNM.

PLATE 2. FIGURES 1−15. Cibyra spp. of monoargenteus species-group. Adults (dorsal): 1 (CGCM 25.160), 2 (CGCM 22.636), 3 (CGCM 24.860), 4 (CGCM 27.289), 5 (CGCM 36.137), 6 (CGCM 35.529), 7 (CGCM 35.658), 8 (CGCM 49.783), 9 (CGCM 49.833), 10 (CGCM 49.965), 11 (CGCM 45.284), 12 (CGCM 23.315), 13 (CGCM 43.815), 14 (CGCM 42.861), 15 (CGCM 23.483). Depositories of the specimens: 1–6, 13–15 in CGCM; 7, 12 in DZUP; 8–11 in CEIOC.

PLATE 8. FIGURES 1−13. Cibyra spp. of munona species-group. Adults (dorsal): 1 (CGCM 47.728), 2 (CGCM 47.507), 3 (CGCM 47.671), 4 (CGCM 46.033), 5 (CGCM 39.587), 6 (CGCM 24.096), 7 (CGCM 24.940), 8 (CGCM 24.847), 9 (CGCM 41.581), 10 (CGCM 51.823), 11 (DZ 52.708), 12 (CGCM 13.907), 13 (CGCM 46.938). Depositories of the specimens: 1–5, 7, 9, 13 in CGCM; 6, 8, 11, 12 in DZUP; 10 in CEIOC.

PLATE 12. FIGURES 1–11. Cibyra spp. of munona and olinda species-groups. Male abdomen, segments VII and VIII (left, tergites; right, sternites). Depositories of the specimens dissected: 1 in CGCM; 2–3, 5–11 in DZUP; 4 in CEIOC.

PLATE 17. FIGURES 1–8. Cibyra spp. of jurate, julie, and munona species-groups. Male genitalia, ventral view. Depositories of the specimens dissected: 1–4, 6–8 in DZUP; 5 in CGCM.

PLATE 21. FIGURES 1–9. Cibyra spp. of dorita, jurate, julie, and munona species-groups. Male genitalia, phallus.

PLATE 28. FIGURES 1–2. Distribution of Cibyra spp. of dorita/yungas (1) species-groups in northwestern Argentina and central-western Bolivia, and munona (2) species-group within central, southeastern, and southern Brazil and Argentina.