Silenoides divergens 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 : 76-77

Silenoides divergens Brown , new species

LSIDurn:lsid:zoobank.org:act: B8308884-7ED5-4DA1-9CBB-3F9AAD2C24C9

( Figs. 18 , 38 , 49 )

Diagnosis and remarks. Silenoides divergens is described as monotypic, and hence can be distinguished from all other species by the characters provided in the diagnosis of the genus above.

Description. Head: Scales of vertex and frons pale gray, tipped with pale cream; scales of labial palpus gray, tipped with pale cream on outer surface, paler on inner surface; scaling of antenna pale cream on dorsum.

Thorax: Dorsum scales pale gray, tipped with pale cream in anterior 0.4, pale cream in medial 0.2, mostly brown in posterior 0.4, including metathoracic tuft. Forewing length 6.5 mm (n = 1) in male, 9.0 mm (n = 2) in female; forewing ground color pale gray; conspicuous, dark brown, triangular blotch subbasally from hind margin; median fascia pale brown, broad, nearly parallel-sided, only slightly narrowed toward tornus, originating at costa ca. 0.4–0.6 distance from forewing base, extending obliquely to hind margin immediately before tornus; apical 0.1 of wing pale brown, isolating a subapical band of ground color between apical region and median fascia; fringe mostly pale brown, pale cream at tornus. Underside uniformly brown. Hindwing pale grey-brown; fringe concolorous with wing.

Abdomen: Male genitalia ( Fig. 38 ) as described for genus. Female genitalia ( Fig. 49 ) as described for genus.

Type. Holotype ♂, Argentina, Salta Province, 73: W of General Güemes, Parque Nacional El Rey , 10 Apr 1979, Mision Cientifica Danesa, USNM slide 154,803 ( NHMD).

Paratypes (2♀). Argentina: Salta Province: 73: W of General Güemes, Parque Nacional El Rey , 10 Apr 1979, Mision Cientifica Danesa, USNM slide 154,803 ( NHMD) .

Distribution and biology. This species is known only from the vicinity of General Güemes, Parque Nacional El Rey, in Salta Province, Argentina, at an elevation of about 300 m. Specimens have been collected only in April.

Etymology. The name divergens refers to highly modified male genitalia compared to those of its putative relative Razowskiina .

Figures

FIGURES 17‒20. Adults of tortricid species from Chile and Argentina. 17. Galomecalpa decolorana, holotype male. 18. Silenoides divergens, paratype female. 19. Archipimima clarkei, holotype male. 20. Archipimima clarkei, paratype female.

FIGURES 37‒38. Male genitalia of tortricid species from Chile and Argentina. 37. Archipimima clarkei, USNM slide 154,864. 38. Silenoides divergens, USNM slide 154,803.

FIGURES 45‒49. Female genitalia of tortricid species from Chile and Argentina. 45. Chapoania dentigera, USNM slide 88,636. 46. Endemulia urrai, USNM slide 154,831. 47. Paratepa argentinana, USNM slide 154,859. 48. Archipimima clarkei, USNM slide 154,860. 49. Silenoides divergens, USNM slide 154,882.