Cibyra yungas ( Viette, 1961 )

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 : 21-22

Cibyra yungas ( Viette, 1961)

Pl. 3 : Fig. 15–16 , Pl. 10: Fig. 14 , Pl. 15: Fig. 4 , Pl. 19: Fig. 14

Xytrops yungas Viette (1961: 3 ; fig. 4 ([ holotype] ♂ gen.)); holotype ♂, Bolivia , [ Cochabamba], Yungas del Palmar, 2000 m, R. Zischka leg.; GP P. Viette no. 3790; ZSBS (examined) [ holotype ♂ with the following labels: / BOLIVIA, Yungas del Palmar, 2000 m, leg. R. Zischka, Zoolog. Staatsslg / TYPE/ Holotypus, Xytropus [ sic] yungas Vtte., Zool. Staatssammlung München / Genitalia ♂, P. Viette, Prép. No. 3790/ P.E.L. Viette det 1960, Xytrops ♂ yungas n.sp. Holotype P. Viette / Specimen photog Checklist Aust Lep Film 169/32]

Aepytus (Xytrops) yungas : Nielsen & Robinson (1983: 20).— Robinson & Nielsen (1984: 17).

Cibyra (Xytrops) yungas : Nielsen et al. (2000: 842).

Cibyra yungas : Mielke & Grehan (2012: 137).— Grehan et al. (2023: 78).

Diagnosis. The pseudotegumen folded outwards posteriorly, a unique condition within the genus as are the phallus with two diverticula only on its antero-ventral portion, and the inward folded fultura inferior.

Examined material (in total 2 ♂). Bolivia. Cochabamba. 1 ♂ , HT; 1 ♂, Chapare, Locotal, 1200 m: 1 ♂, X.2019, Calderón-Villavicencio leg. ( CGCM 42.521 ; CGCM) .

Male ( Pl. 3 : Fig. 15–16 , Pl. 10: Fig. 14 ). Forewing length: 19 mm, wingspan: 40 mm.

Male genitalia (Pl. 15: Fig. 4 , Pl. 19: Fig. 14 ). Saccus with posterior edge concave. Tegumen rectangular, slightly curved. Tergal lobes protruded posteriorly. Pseudotegumen less reinforced anteriorly than posteriorly, the latter expanded latero-posteriorly and folded outwards. Fultura inferior rectangular, twice as wide as long, posterior margin inward folded. Valvae apically pointed (not visible in the Pl. 15: Fig. 4 ).

Female. Unknown.

Distribution. Known from two localities in Cochabamba, Bolivia (Pl. 28: Fig. 1 ).

Remarks. Viette (1961) figured the male genitalia in the original description, so here the male is figured for the first time.

d) Species-group: endyra . Six species: C. claudia sp. nov., C. endyra , C. hannelore sp. nov., C. mirna sp. nov., C. monique sp. nov., and C. ykeyra .

Defined by the phallus shape with a distal bladder, that when everted, comprises three mesal diverticula (posterior, mesal, and ventral) (Pl. 20: Fig. 1–6 ). In addition by: i) male sternite VIII uniformly sclerotised and shows the posterior margin obtuse; ii) tegumen extended beyond articulation with saccus; iii) tergal lobes crab claw-shaped with or without projections; iv) pseudotegumen ribbed and expanded mesally; v) valvae digitiform and ribbed, and; vi) plates of the lamella antevaginalis with mesal corner projected and tapered.

Distribution. Coastal and mainland between Espírito Santo in southeastern Brazil and Santa Catarina in southern Brazil at altitudes between about 600 and 2200 m (Pl. 26: Fig. 1 ).

Key for species based on males

1) Corner of mesal projection of the posterior portion of the saccus at straight angle.................................. 2 Corner of mesal projection of the posterior portion of the saccus curved.......................................... 4

2) Posterior margin of the saccus clearly V-shaped...................................................... C. endyra Posterior margin of the saccus concave.................................................................... 3

3) Tergal lobes without protrusion................................................................... C. ykeyra Tergal lobes with protrusion........................................................... C. hannelore sp. nov.

4) Tergal lobe with protrusion, pseudotegumen reinforced anteriorly................................. C. mirna sp. nov. Tergal lobe without differentiation, pseudotegumen not reinforced anteriorly...................................... 5

5) Posterior portion of saccus slightly pronounced, posterior margin slightly concave.................. C. claudia sp. nov. Posterior portion of saccus pronounced, posterior margin almost straight......................... C. monique 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.

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 3. FIGURES 1−16. Cibyra spp. of monoargenteus and yungas species-group.Adults (dorsal): 1 (DZ 15.548), 2 (CGCM 26.432), 3 (CGCM 23.181), 4 (CGCM 23.231), 5 (CGCM 480), 6 (CGCM 36.073), 7 (CGCM 7.238), 8 (CGCM 51.990), 9 (CGCM 51.089), 10 (CGCM 50.768), 11 (CGCM 38.984), 12 (CGCM 42.783), 13 (CGCM 39.896), 14 (CGCM 38.574), 15 (3790), 16 (CGCM 42.521). Depositories of the specimens: 1, 6, 13 in DZUP; 2–5, 7, 11–12, 14, 16 in CGCM; 8–10 in CEIOC; 15 in ZSBS.