Cibyra yumiko, 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 : 38-40

publication ID	https://doi.org/10.11646/zootaxa.5709.1.1
publication LSID	lsid:zoobank.org:pub:D3B12545-635D-4AEF-BD58-57B99B88DE48
DOI	https://doi.org/10.5281/zenodo.17883785
persistent identifier	https://treatment.plazi.org/id/03EDC94D-FFBB-D362-20E0-B382ECA4FD1C
treatment provided by	Plazi
scientific name	Cibyra yumiko
status	sp. nov.

Treatment

Cibyra yumiko View in CoL sp. nov.

urn:lsid:zoobank.org:act:

Pl. 8: Figs 5–7 View PLATE 1 , Pl. 12: Fig. 2 View PLATE 1 , Pl. 17: Fig. 6 View PLATE 1 , Pl. 21: Fig. 6 View PLATE 1

Type material. Holotype ♂ (Pl. 8: Fig. 6 View PLATE 1 ): /Brasil-RS [ Rio Grande do Sul], Morro Redondo , 19.III.2009, SIEWERT, R.R. [leg.]/ 24.096 Col. C. Mielke / BC-CGCM/ DZ 52.638 / HOLOTYPUS, Cibyra yumiko C. Mielke, Grehan & Koike, 2024 / ( DZUP) .

PLATE 8. FIGURES 1−13 View PLATE 1 View PLATE 2 . 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.

Paratypes (in total 10 ♂): Brazil. Rio Grande do Sul. Same data as holotype: 2 ♂ ( CGCM 24.425, 24.649; DZUP) GoogleMaps . Piratini, Passo da Invernada , 250–300m: 1 ♂, 26–27.III.1999, Prestes & Moser leg. ( CGCM 24.940 ; CGCM) . Canguçu: 1 ♂, 10–18.III.2018, V.O. Becker leg ( CGCM 39.587 ; CGCM) . Argentina. Entre Ríos. Colón, Parque Nacional El Palmar, Intendencia , 31°52‘7.57“S, 58°12‘30.13“W, 30 m, Núñez Bustos, C. Kopuchian & N. Garcia leg.: 1 ♂, 3.III.2011 (MACN-En 24561; MACN) GoogleMaps ; 4 ♂, 6.III.2011 (MACN-En 24587, 24629, 24636, 25343; MACN) GoogleMaps ; 1 ♂, 9.III.2011 (MACN-En 24607; MACN) .

Diagnosis. This and the previous species are unique among Cibyra in having a pronounced mesal antero-ventral projection of the pseudotegumen (Pl. 17: Figs 5–6 View PLATE 1 ; see upper arrow). However, C. yumiko sp. nov. can be distinguished by the emargination of the posterior margin of saccus, occupying 1/5 of saccus width, while 1/ 3 in C. munona , thus wider in the latter (Pl. 17: Figs 5–6 View PLATE 1 ; see arrows), and by the tergal lobes not protruding, in contrast to C. munona .

Description. Male (Pl. 8: Figs 5–7 View PLATE 1 , Pl. 12: Fig. 2 View PLATE 1 ). Forewing length: 11–16 mm, wingspan: 26–33 mm. Epiphysis absent.

Male genitalia (Pl. 17: Fig. 6 View PLATE 1 , Pl. 21: Fig. 6 View PLATE 1 ). Tergal lobes not protruded. Saccus with posterior edge notched mesally, occupying about 1/5 of its total length. Tegumen slightly sinuate. Pseudotegumen expanded and projected ventrally, ribbed ventro-anteriorly. Fultura inferior cup-like, distally bilobed, and 1.1 times longer than wide.

Female. Unknown.

Distribution. Known from a few places in southeastern Rio Grande do Sul, southern Brazil (Pl. 28: Fig. 2 View PLATE 1 ).

Etymology. Homonym in honour of the late Yumiko Miyashita, feminine. It is treated as a noun in the nominative singular in apposition.

Remarks. The relatively small type series has revealed that this new species shows different phenotypes, especially concerning the FW inner area, greyish-white and orangish-brown, and postdiscal band or line, white or dark brown. This variation is also found in the similar C. munona . Allopatric to all congenerics.