Metachrostis miasma (Hampson, 1891) Hampson, 1891

V, Ато, 2009, A review of Palaearctic Metachrostis Hübner, [1820] 1816 with description of three new species (Lepidoptera: Noctuidae, Eublemminae), Zootaxa 2026, pp. 1-17 : 13-14

Metachrostis miasma (Hampson, 1891) , comb. n.

( Figs. 19 , 32 )

Erastria miasma Hampson, 1891 , Illustration typical specimens of Lepidoptera Heterocera in the collection of the Brithish Museum 8: 12, 73, Pl. 145: 16 (Type-locality: India, Tamil Nadu, Nilgiris [Syntypes: BMNH, London]). Synonymy: Trilophonota tegulata Wileman & West, 1929.

Material examined. Description and illustration by Yoshimoto (1999).

Diagnosis. Metachrostis miasma differs from M. sinevi by its darker brown coloration and wing pattern (see diagnosis for M. sinevi ), a narrower valva without extension on its dorsal margin, and by a relatively thinner and longer aedeagus with a thin, constricted coecum and small proximal extension. Adult ( Fig. 19 ). Wingspan: 16–17 mm. Head, body and wings dark greyish-brown; in wing pattern all crosslines lines black; basal and subbasal fields not darker than background; antemedial line thin; medial line widely shadowed on inner side; postmedial line distinct, thin, waved; orbicular spot dark brown; reniform spot grey-brown, with dark-brown borders. Subterminal field between postmedial and submarginal lines with dark-brown waved band. In male genitalia ( Fig. 32 ) uncus curved; valva narrow with parallel dorsal and ventral margins; ventral margin extended medially and with slightly constrictde distally; aedeagus relatively thin and long with long, constricted coecum; proximal extension of aedeagus small, oval. Female genitalia not examined.

Distribution. Japan: Honshu, Tokai district; China, India, Philippines, Indonesia (Sulawesi), New Caledonia, St. Matthias Isl., Australia.

Figures

FIGURES 17 – 22. Eublemminae spp., adults. 17. Metachrostis sinevi, male, holotype, Russia, Primorye terr. (ZISP); 18. Metachrostis sinevi, male, paratype, Russia, Khabarovsk terr. (ZISP); 19. Metachrostis miasma, male (after Yoshimoto, 1999), Japan; 20. Odice arcuinna, female, Austria (ZFMK); 21. Eublemma amoena, female, Spain (Coll. G. Behounek); 22. Eublemma melabela, male, Tadjikistan (ZISP).

FIGURES 29 – 32. Metachrostis spp., male genitalia. 29. M. batanga, paratype, prep. 2090 VK ZFMK, China (ZFMK); 30. M. hoenei, paratype, prep. 2089 VK ZFMK, China (ZFMK); 31. M. sinevi, holotype, prep. 0 0 35 Matov, Russia, Primorye terr. (ZISP); 32. M. miasma, (after Yoshimoto, 1999), Japan.