Morphological Difference of the Smaller Tea Tortrix, Adoxophyes orana, in Japan

Abstract

The smaller tea tortrix, Adoxophyes orana FISCHER VON RÖSLERSTAMM, is polyphagous, and about 56 species of 31 families have been known as its host plants in Japan. A lot of specimens of this moth, reared from apple, pear, tea and Japanese spindle tree, (Euonymus japonica), have been examined and it is concluded that these specimens could be divided into two forms, which morphologically differ from each other as follows: 1. Apple form. (The specimens on which this form is based have been reared from apple and pear.) Adult: Fore wing light orange-brown with chestnutbrown markings; costal patch obsolate. Pupa: Clypeus with three pairs of setae. Larva: Mandible with a well-developed retinaculum. 2. Tea form. (The specimens on which this form is based have been reared from tea and Japanese spindle tree.) Adult: Fore wing pale yellow with dark brown markings; costal patch distinct. Pupa: Clypeus with two pairs of setae. Larva: Mandible with a poorly developed retinaculum.