Cibyra julie, 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 : 37-38

Cibyra julie sp. nov.

urn:lsid:zoobank.org:act:

Pl. 7: Figs 8–10 , Pl. 11: Fig. 11 , Pl. 17: Fig. 4 , Pl. 21: Fig. 4

Type material. Holotype ♂ (Pl. 7: Fig. 9 ): 28.I.1997, Rio Natal, 550 m, São Bento do Sul, SC [ Santa Catarina ], Brasil. A. Rank leg./ DZ 52.659/ HOLOTYPUS, Cibyra julie C. Mielke, Grehan & Koike, 2024 / ( DZUP).

Paratypes (in total 4 ♂ 1 ♀): Brazil. Santa Catarina. Same locality as holotype : 1 ♂, II.2004, A. Rank leg. ( CGCM 13.724 ) ; 1 ♂, I.2005, A. Rank leg. ( CGCM 17.636 ). São Bento do Sul , Rio Vermelho, 800 m : 1 ♀, I.1996, I. Rank leg. ( CGCM 6.427 [ HM375844 ]) ; 1 ♂, 26.I.1999, I. Rank leg. ( CGCM 4.467 ) ; 1 ♂, 28.I.2003, I. Rank leg. ( CGCM 4.684 ) .

Diagnosis. Males of C. julie sp. nov. can be readily identified by the uniform ground colour of the FW with a lighter area on the anterior portion of the postmedial band. The male genitalia cannot be confused with any other congeneric species with respect to the posterior margin of the saccus being deeply concave mesally with two protrusions laterally. The edged valvae with an inner side ribbed are unique within the genus (Pl. 17: Fig. 4 ; see arrows).

Description. Male (Pl. 7: Figs 8–9 , Pl. 11: Fig. 11 ). Forewing length: 19–25 mm, wingspan: 37–49 mm. Epiphysis present.

Male genitalia. (Pl. 17: Fig. 4 , Pl. 21: Fig. 4 ). Tergal lobes crab claw-shaped, setose basally with a spiniform process mesally. Saccus U-shaped, posterior edge bilobed, and mesally concave. Tegumen slightly S-shaped. Pseudotegumen expanded antero-ventrally, reinforced and ribbed medially. Fultura inferior rectangular, bilobed dorsally, slightly constricted meso-laterally.

Female (Pl. 7: Fig. 10 ). Forewing length: 39 mm, wingspan: 77 mm. Epiphysis present.

Female genitalia. Not dissected.

Distribution. Known from the type locality only (Pl. 27: Fig. 1 ).

Etymology. Homonym in honour of Julie Schultz, feminine. It is treated as a noun in the nominative singular in apposition.

i) Species-group: munona . Five species: C. agnes sp. nov., C. alina sp. nov., C. munona , C. volta sp. nov., and C. yumiko sp. nov.

In all members of this species-group, the posterior margin of the saccus is deeply concave along with an expansion of the inner wall of the saccus, which defines the species-group (Pl. 17: Figs 5–9 ). In addition the group can be recognized by: i) male sternite VIII trapezoidal, distally more sclerotised, posterior margin V-shaped; ii) tegumen not extended beyond the articulation with saccus; iii) valvae notably ribbed in its inner side and tapered distally, and; iv) phallus, when everted, bears on its distal portion two dorso-lateral and two globular meso-ventral diverticula on each side.

Distribution. Coastal and mainland between Goiás in central Brazil and the extreme south of Rio Grande do Sul in southern Brazil at altitudes between about 600 and 1400 m. The widest distribution of all species-groups, occurring in the Cerrado and Atlantic Forest (Pl. 28: Fig. 2 ).

Key for species based on males

1) Pseudotegumen projected antero-ventrally................................................................. 2 Pseudotegumen regular................................................................................ 3

2) Emargination of posterior margin of saccus occupying 1/5 of saccus width......................... C. yumiko sp. nov. Emargination of posterior margin of saccus occupying 1/3 of saccus width............................... C. munona

3) FW postdiscal band or line not clearly marked, golden markings conspicuous........................ C. volta sp. nov. FW postdiscal band or line clearly marked, golden markings not conspicuous..................................... 4

4) Tergal lobes protruded, posterior margin of saccus V-shaped...................................... C. agnes sp. nov. Tergal lobes not protruded, posterior margin of saccus U-shaped.................................. C. alina sp. nov.

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.