''Elachista amamii'' is a
moth of the family
Elachistidae. It is found in the
Ryukyu Islands of
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
and in
Taiwan.
The length of the forewings is 2.4–3 mm for males and 2.5–3 mm for females. Adults are
sexually dimorphic. Male have dark grey-brownish forewing with two indistinct whitish costal spots while females have blackish forewings with four distinct silvery spots. There are multiple generations per year in Taiwan.
The larvae feed on ''
Thuerea involuta'', ''
Digitaria timorensis'' and ''
Digitaria adscendens''. They
mine the leaves of their host plant. The mine starts as a linear gallery, later becoming an elongate blotch.
[, 2005: A revision of the ''Elachista praelineata'' group (Lepidoptera: Elachistidae) in Japan, with comments on morphology of the pupa in Elachista. ''Tijdschrift voor Entomologie'' 148: 1-19. Full article]
References
Moths described in 1983
amamii
Moths of Japan
Moths of Taiwan
{{Elachista-stub