Hamiamia trancasiana ( Razowski and Pelz, 2010 ) Brown, 2024

Brown, John W., 2024, New genera and species of tortricid moths from Chile and Argentina (Lepidoptera: Tortricidae), Zootaxa 5551 (1), pp. 51-90 : 59

Hamiamia trancasiana ( Razowski and Pelz, 2010) , new combination

( Figs. 6 , 24 , 43 )

Varifulva trancasiana Razowski and Pelz, 2010: 21 .

Diagnosis. Superficially, H. trancasiana is slightly reminiscent of Acmanthina acmanthes , but only because the forewing maculation features alternating areas of white and dark scales. Hamiamia trancasiana is distinguished from all other Euliina by the well-defined areas of snow white ground color between the irregular brown fascia of the forewing. The female genitalia resemble those of Varifula fulvaria . However, the long, strongly attenuate anterior portion of the corpus bursae is unique in the tribe.Additional diagnostic features are given in the diagnosis of the genus above.

Redescription. Head: Scales of vertex and frons ferruginous and cream; scales of labial palpus mostly ferruginous on outer surface, paler on inner surface; scaling of antenna brown on dorsum, cream on venter.

Thorax: Dorsum mixed with ferruginous, pale brown, and cream scales. Forewing length 8.5‒9.0 mm (n = 2); forewing ground color snow white; large brown blotch in basal 0.2 of wing; irregular brown median fascia broadest medially, outer margin convex near middle, often with white scales sparsely scattered throughout; subterminal fascia extending from costa ca. 0.8 distance from wing base, to termen; termen with a few scattered white spots; fringe more or less concolorous with ground color. Underside pale gray brown with trace of upperside pattern. Hindwing pale grey-brown; fringe concolorous with wing.

Abdomen: Male genitalia ( Fig. 24 ) as described for genus. Female genitalia ( Fig. 43 ) as described for genus.

Type. Holotype ♀, Chile, Ñuble Province, 2 km N Las Trancas, 70 km E Chillan, 1400 m, 36º54'S, 71º28'W, 14 Jan 2001, C. Gielis & H. v. d. Wolf, slide V. P. 1192 ( VPC).

Additional material examined (1♂, 1♀). Chile: Ñuble Province : Las Trancas, 21 km E Recinto, near high waterfall, 1300 m, 17 Jan 1979 (1♂, 1♀), M. & D. Davis & B. Akerbergs ( USNM) .

Distribution and biology. This species is known only from the vicinity of Las Trancas in Ñuble Province, Chile, at elevations of 1300‒1400 m. Specimens have been collected only in January.

Figures

FIGURES 1‒8.Adults of tortricid species from Chile andArgentina.1. Argentiliana basipallidana, paratype female. 2. Terifrona fronteria, holotype male. 3. Transtilliana biloba, paratype male. 4. Transtilliana biloba, paratype male. 5. Vargasia karsholti, holotype male. 6. Hamiamia trancasiana, Chile, Ñuble Province. 7. Varifula fulvaria, Chile, Aconcagua Province. 8. Varifula geomops, holotype male.

FIGURES 21‒28. Male genitalia of tortricid species from Chile and Argentina. 21. Terifrona fronteria, USNM slide 145,517. 22. Transtilliana biloba, USNM slide 154,846. 23. Vargasia karsholti, Horak slide GP 733. 24. Hamiamia trancasiana, USNM slide 92,490. 25. Varifula fulvaria, USNM slide 154,848. 26. Varifula geomops, USNM slide 68,492. 27. Proeulia hasta, furca attached to phallus, USNM slide 154,802. 28. Proeulia hasta, furca in situ, USNM slide 81,233.

FIGURES 39‒44. Female genitalia of tortricid species from Chile and Argentina. 39. Argentiliana basipallida, USNM slide 154,800. 40. Terifrona fronteria, USNM slide 145,518. 41. Transtilliana biloba, USNM slide 154,847. 42. Vargasia karsholti, JWBrown slide 1216. 43. Hamiamia trancasiana, USNM slide 92491. 44. Varifula fulvaria, USNM slide 88,471.