Summer Fruit Tortrix: Adoxophyes orana (Fischer von Röslerstamm, 1834). Diagnostic Scholarship Report

[摘要] IntroductionAdoxophyes orana (Fischer von Röslerstamm) is a polyphagous leafroller distributed across the Palaearctic region and Taiwan. It feeds on pome and stone fruit and is a serious pest in apple orchards as it grazes on the surface of fruit. Unlike the codling moth, however, the larva of A. orana does not bore deeply into the fruit. The biology in central Europe as described by Dickler (1991) is here briefly summarised. Adoxophyes orana is usually bivoltine and rarely produces a third generation. In central Europe overwintering larva of the second generation complete their development by feeding on the opening buds in spring, and the resulting adults lay their eggs in May. This first generation then develops very quickly, the larvae feeding on shoots, leaves and fruit and causing major economic damage. The resulting adults appear in late summer, lay their eggs, and the larvae of the second generation hatch in autumn. Their feeding produces shallow depressions in the fruit before the larvae enter winter diapause in the 2nd or 3rd instar, in a loosely woven cocoon under bark or some other sheltered niche.Adoxophyes is a large genus with many often very similar-looking species characterised by strong sexual dimorphism in wing shape and pattern. Superficial identification is further impeded by the generalised, typically tortricine wing pattern of most Adoxophyes species, and the fact that there are closely related pest genera of similar appearance in both Eurasia and Australia. However, though this has never been mentioned in any keys or fact sheets, Adoxophyes has a very unique wing venation on both fore and hind wings, which allows unambiguous recognition of Adoxophyes adults. Morphology-based identification of larva and pupa of Adoxophyes, on the other hand, is difficult and tenuous. Hence, if at all possible, identification should be based either on adult moths or on molecular information.

[发布机构] CSIRO

[学科分类] 地球科学(综合)