''Cydia kurokoi'', the nut fruit tortrix, is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of ...

of the family

Tortricidae The Tortricidae are a family of moths, commonly known as tortrix moths or leafroller moths, in the order Lepidoptera. This large family has over 11,000 species described, and is the sole member of the superfamily Tortricoidea, although the gen ...

. It is found in Japan, the

Korean Peninsula Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic ...

and eastern China. The

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan ...

is about 20 mm. Adults are on wing in August and September. There is one generation per year. The larvae feed on '' Castanea seguinii'', ''

Castanea mollitissima The chestnuts are the deciduous trees and shrubs in the genus ''Castanea'', in the beech family Fagaceae. They are native to temperate regions of the Northern Hemisphere. The name also refers to the edible nuts they produce. The unrelated ...

'', ''

Castanea crenata ''Castanea crenata'', the Japanese chestnut, also known as the Korean chestnut is a species of chestnut native to Japan and Korea. ''Castanea crenata'' exhibits resistance to ''Phytophthora cinnamomi'', the fungal pathogen that causes ink diseas ...

'' and ''

Quercus acutissima ''Quercus acutissima'', the sawtooth oak, is an Asian species of oak native to China, Tibet, Korea, Japan, Indochina (Vietnam, Thailand, Myanmar, Cambodia) and the Himalayas (Nepal, Bhutan, northeastern India). It is widely planted in many la ...

''. The larvae feed inside the fruits of chestnut trees and damage them.

External links

Eurasian Tortricidae
Grapholitini Insects of Korea Moths described in 1960 Moths of Japan Taxa named by Hans Georg Amsel {{Olethreutinae-stub