Cibyra bruna, 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 : 28-29

Cibyra bruna sp. nov.

urn:lsid:zoobank.org:act:

Pl. 5 : Figs 5–7 , Pl. 11: Fig. 6 , Pl. 13: Fig. 8 , Pl. 16: Fig. 2 , Pl. 20: Fig. 8 , Pl. 23: Fig. 8 , Pl. 24: Fig. 8

Type material. Holotype ♂ ( Pl. 5 : Fig. 7 ): / Brasil — PR [ Paraná], Vila Velha , 900 m, 26.I.2005 (4), C. Mielke leg./ DZ 15.559 / HOLOTYPUS, Cibyra bruna C. Mielke, Grehan & Koike, 2024 / ( DZUP) .

Paratypes (in total 23 ♂, 3 ♀). Brazil. Paraná. Ortigueira, 800 m: 1 ♂, 27.II.2003, C. Mielke leg. ( CGCM 6.971 [ JX215649 ]; CGCM). Carambeí, 1050 m: 1 ♂, 29.I.2005, C. Mielke leg. ( CGCM 22.836 [ JX215645 ]; CGCM); 1 ♀, 2.III.2012 ( CGCM 24.969 [ JX215589 ]; CGCM); 1 ♀, 28.I.2006 ( CGCM 22.876 [ GU661545 ]; CGCM). Ponta Grossa , Nova Rússia , 900 m: 1 ♂, 4.II.2005, C. Mielke leg. ( CGCM 29.049 ; CGCM) . Same data as holotype: 3 ♂ ( CGCM 22.924 , 43.647 , 44.204 ; CGCM) . Same locality and collector as holotype: 5 ♂ 1 ♀, 10.II.2012 ( CGCM 11.303 , 22.917 , 23.020 [ GU661547 ], 24.722, 24.874, 24.987 [ JX215611 ]; CGCM); 1 ♂, 26.I.2005 ( CGCM 22.700 ; CGCM) ; 9 ♂, 30.I.2005 ( CGCM 21.460 , 22.812 , 22.860 , 22.972 , 23.036 , 23.052 , 23.100 , 23.281 [ GU661546 ], 44.098; CGCM). Curitiba , 900 m: 1 ♂, 27.I.1975, V. O. Becker leg. ( CGCM 15.920 ; CGCM) ; 1 ♂, 7.II.1975 ( CGCM 15.624 ; CGCM) .

Diagnosis. Easily distinguished by its congeners of the pluriargenteus species-group by the tergal lobes being enlarged at base with a digitiform ventro-posterior process on each side (Pl. 16: Fig. 2 ; see arrow), and the absence of an epiphysis. In C. pluriargenteus , the tergal lobe is not enlarged at base, the ventro-posterior processes are triangular and tapered (Pl. 16: Fig. 1 ; see arrow), and the epiphysis is present. The base of the HW is much lighter in C. pluriargenteus than in C. bruna sp. nov. These two species are reciprocally allopatric.

Description. Male ( Pl. 5 : Fig. 7 , Pl. 11: Fig. 6 ). Forewing length: 14–18 mm, wingspan: 28–34 mm. Epiphysis absent.

Male genitalia (Pl. 16: Fig. 2 , Pl. 20: Fig. 8 ). Tergal lobes basally enlarged, protruded anteriorly with a ventro-posterior digitiform process. Tegumen slightly S-shaped. Pseudotegumen projected postero-dorsally, ventrally expanded, reinforced, and ribbed medially. Fultura inferior bilobed dorsally, as wide as long.

Female ( Pl. 5 : Figs 5–6 , Pl. 13: Fig. 8 ). Forewing length: 20–21 mm, wingspan: 40–42 mm.

Female genitalia (Pl. 23: Fig. 8 , Pl. 24: Fig. 8 ). Lamella antevaginalis slightly sclerotized, with its latero-posterior dorsal edge densely sclerotised and sharply produced as a triangular process. Ductus bursae as long as the pyriform corpus bursae.

Distribution. Central-eastern Paraná, southern Brazil, at altitudes between approximately 800 to 1050 m (Pl. 26: Fig. 2 ).

Etymology. Homonym in honour of Bruna F. Maestri, feminine. It is treated as a noun in the nominative singular in apposition.

Remarks. Cibyra bruna sp. nov. is known from a few localities within the Campos Gerais region in Paraná, and is allopatric to all other members of this species-group. All records are from the summer season.

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 5. FIGURES 1−12. Cibyra spp. of pluriargenteus species-group. Adults (dorsal): 1 (CGCM 36.084), 2 (CGCM 44.740), 3 (CGCM 43.008), 4 (CGCM 51.260), 5 (CGCM 24.987), 6 (CGCM 22.876), 7 (CGCM 23.084), 8 (CGCM 36.075), 9 (CGCM 44.059), 10 (MZSP 14 410), 11 (CGCM 44.333), 12 (MZSP 14 414). Depositories of the specimens: 1–6, 9, 11 in CGCM; 7–8 in DZUP; 10, 12 in MZSP.