Cosmetra truncana, Aarvik, Leif, 2016

Aarvik, Leif, 2016, Redefinition and revision of African Cosmetra Diakonoff, 1977 (Lepidoptera: Tortricidae) with description of six new species, Zootaxa 4088 (2), pp. 245-256 : 249-250

Cosmetra truncana new species

( Figs. 5 , 15 , 22 )

Type material. Holotype, ♂, MALAWI: Mulanje Mts., Chambe Hut, 1860 m, L[icht] F[ang] Widdringtonia forest, 20.x.1996, Mey & Nuss, genitalia slide L. Aarvik 2013.010 (ZMHU). Paratypes, 4♂, 4♀, 2 specimens of unknown sex, 1♂, 1♀, same data as holotype; remaining paratypes: Mulanje Mts., Lichenya Hut, 1840 m, L[icht] F[ang] Widdringtonia forest, 21.x.1996, Mey & Nuss, genitalia slide ♀ L. Aarvik 2014.014 (ZMHU).

Diagnosis. Cosmetra truncana differs externally from other Cosmetra species by its reddish brown forewing colour. In the male genitalia the truncate shape of the uncus and the triangular socii are unique. In the female genitalia the ductus bursae is distinctly narrower than in other Cosmetra species.

Description. Male ( Fig. 5 ). Head: Reddish brown, rough scaled, with forward directed tuft. Antenna pale brown. Labial palpus ca. 1.5 times diameter of eye, pale brown, lightly sprinkled with brown, third segment cream, nearly concealed by scaling of second segment. Thorax: Reddish brown. Fore- and mid-leg grey, with light rings, hind-leg cream, tarsi ringed with light grey. Wingspan 13.0–15.0 mm. Forewing upperside reddish brown; costal strigulae weakly expressed, indicated by greyish oblique streaks, dark reddish brown suffusion form a basal blotch and smaller rounded tornal blotch; dorsal patch edged white, with ill-defined grey and brown lines; terminal line cream, with black dots marking end points of veins; cilia concolorous with wing, interspersed with grey, becoming lighter in tornal area. Hindwing light greyish brown, veins with dark suffusion. Abdomen: Genitalia ( Fig. 15 ) with uncus truncate, large, tapered towards tip, apex wider; socii triangular; mid-part of valva nearly straight and parallel-sided, outer margin of cucullus evenly curved, dorsal lobe broad, ventral lobe with numerous stout spines.

Female. Head and Thorax: Externally similar to male. Abdomen: Genitalia ( Fig. 22 ) with apophyses anteriores 2.5 times the length of segment 8 and longer than apophyses posteriores; sterigma triangular, with well-defined anterior edge; ductus bursae rather narrow, asymmetrical, nearly straight in posterior half, becoming wider towards corpus bursae; corpus bursae round.

Distribution. Malawi.

Ecology. Collected in Widdringtonia forest.

Etymology. The species is named for the characteristically shaped uncus in the male genitalia.

Figures

FIGURES 1 – 10. Adults of Cosmetra. 1. C. spiculifera (Meyrick). Male from Ghana: Paradise Mt. 2. C. larseni, n. sp. Paratype male from Kenya: Gilgil. 3. C. tumulata (Meyrick). Female from Rep. South Africa: Waterval-Boven. 4. C. fibigeri, n. sp. Holotype male from Uganda: Malamigambo Forest. 5. C. truncana, n. sp. Paratype female from Malawi: Mulanje Mts. 6. C. multidentana, n. sp. Paratype male from Tanzania: Kigogo Forest. 7. C. usambarensis, n. sp. Paratype male from Tanzania: Usambara Mt., Magamba. 8. C. usambarensis, n. sp. Paratype female from Tanzania: Usambara Mt., Magamba. 9. C. juu, n. sp. Paratype male from Kenya: Mt. Longonot. 10. C. juu, n. sp. Paratype female from Kenya: Mt. Longonot. Scale 5 mm.

FIGURES 11 – 18. Male genitalia of Cosmetra. 11. C. spiculifera (Meyrick) (slide NHMO 2597). 12. C. larseni, n. sp. (slide NHMO 2160). 13. C. tumulata (Meyrick) (slide NHMO 2161). 14. C. fibigeri, n. sp. (slide NHMO 2719). 15. C. truncana, n. sp. (slide L. Aarvik 2013.010). 16. C. multidentana, n. sp. (slide NHMO 2839). 17. C. usambarensis, n. sp. (slide L. Aarvik 2015.010). 18. C. juu, n. sp. (slide L. Aarvik 2015.015). Scale 1 mm.

FIGURES 19 – 22. Female genitalia of Cosmetra. 19. C. spiculifera (Meyrick) (slide LAA 2015.008). 20. C. larseni, n. sp. (slide NHMO 2162). 21. C. tumulata (Meyrick) (slide NHMO 2717). 22. C. truncana, n. sp. (slide L. Aarvik 2014.014). Scale 1 mm.