Ectropis obliqua

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Ectropis obliqua (click on image to enlarge it)
Authors: Takaaki Hattori
Source: iNaturalist

Ectropis obliqua Warren, 1894 - (tea geometrid)

This moth is found in Japan and in parts of Central China. It is an important pest of tea, where the larvae feeding on the leaves and shoots, skeletonizing them. The damage causes yield and quality losses. There may be up to 6-7 generations per growing season. Insecticides are mainly used for control, but the development of pesticide resistance has been a problem. Cultural methods like interplanting tea with Rosmarinus officinalis are under development.

In China, E. obliqua can be confused with Ectropis grisescens, another pest of tea with a similar morphology and biology. However, there is little geographical overlap between both species. They can mate, but produce infertile hybrids (Wang et al., 2019).