Isodemis Diakonoff, 1952

Sun, Yinghui & Li, Houhun, 2011, Review of the genus Isodemis Diakonoff (Lepidoptera, Tortricidae) from China, with description of three new species, ZooKeys 77, pp. 51-64 : 52-53

Isodemis Diakonoff, 1952

Isodemis Diakonoff 1952: 147. Type species: Batodes serpentinana Walker, 1863 (original designation).

Diagnosis.

Isodemis is characterized by the labial palpus obliquely uprising almost as high as upper edge of eye; the forewing dominantly yellowish brown or ochreous brown; the median fascia interrupted or indistinct near costal margin; male genitalia with gnathos hooked, valva with a C-shaped plica, with numerous fine wrinkles between plica and costa, and the sacculus with terminal process; female genitalia with the ductus bursae usually with cestum, and the single dentate signum with a conspicuous globular process placed posteriorly in the corpus bursae.

Distribution.

China, Vietnam, Thailand, Indonesia, Nepal, India and Sri Lanka.

Discussion.

Most species of this genus show a stong sexual dimorphism, which makes species identification difficult.Of the seven previously described species, Isodemis longicera Razowski, 2009 and Isodemis brevicera Razowski, 2009 were described from the males, while Isodemis ngoclinha Razowski, 2009 was described from females. Currently, no additional knowledge has been added to these three species. Therefore, we have excluded Isodemis ngoclinha from the key based on forewing patterns and male genitalia.

Key to the known species of Isodemis

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