Cibyra ybyra C. Mielke, 2015

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 : 16-17

Cibyra ybyra C. Mielke, 2015

Pl. 2 : Figs 13–15 , Pl. 10: Fig. 10 , Pl. 14: Fig. 10 , Pl. 19: Fig. 10

Cibyra ybyra : Mielke (2015: 13; figs 8a–b ( holotype ♂ dorsal/ventral), 9–12 ( ♂ dorsal), 13a–b ( ♀ female), 20 ( holotype ♂ abdominal segment VIII), 21 ( holotype ♂ gen.), 22 ( holotype phallus), 23 (geographical distribution)); holotype ♂ with the following labels: / Holotypus, Cibyra ybyra C. Mielke det. 2014/ 18.–22. XII. 2000, Morro da Igreja, 1250 m, Urubici, SC , [ Brazil], Miers & C. Mielke leg./ CGCM 6.850/ DZ 15.541/ BC-CGCM [BC-JX215585]/; DZUP (examined).— Favretto (2016: 72).— Grehan et al. (2023: 78).

Diagnosis. Distinguished from all the previous species by the obtuse V-shaped posterior margin of the saccus (Pl. 14: Fig. 10 ; see arrow) and the protruded tergal lobes.

Material examined (in total 40 ♂ 1 ♀). Brazil. Same material listed by Mielke (2015): 26 ♂ 1 ♀ (including HT) . Santa Catarina. Same locality as holotype: 12 ♂, 1–2.II.1992, C. Mielke leg. ( CGCM 38.546 , 42.725 , 42.729 , 42.861 , 43.130 , 43.237 , 43.686 , 43.815 , 43.971 , 44.275 , 44.374 , 44.382 ; CGCM). Urubici , Santa Bárbara, 1360 m: 1 ♂, 1–3.II.1989, C. Mielke leg. ( CGCM 39.935 ; CGCM); 1 ♂, 25–27.XII.1989 ( CGCM 40.885 ; CGCM) .

Male ( Pl. 2 : Figs 13–14 , Pl. 10: Fig. 10 ). Forewing length: 13–21 mm, wingspan: 26–42 mm (see Mielke 2015).

Male genitalia (Pl. 14: Fig. 10 , Pl. 19: Fig. 10 ). For details, see Mielke (2015).

Female ( Pl. 2 : Fig. 15 ). Forewing length: 25 mm, wingspan: 49 mm (see Mielke 2015).

Female genitalia. Not dissected.

Distribution. Confined to the Serra Geral of southeastern Santa Catarina and northeastern Rio Grande do Sul, southern Brazil at altitudes between about 1000 and 1400 m (Pl. 25: Fig. 2 ).

Remarks. Males of C. ybyra present basically two forms as shown in Pl. 2 : Figs 13–14 . The same patterns are found in species of the endyra species-group ( C. endyra and C. ykeyra ), but the shape of the phallus leaves no doubt about its placement within monoargenteus species-group. It is frequent at light in summer, and is sympatric and synchronic to C. barbara sp. nov., C. monoargenteus , and C. stigmatica within this species-group.

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.