Contarinia tritici

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Contarinia tritici a) female, b) male, c) larva (click on image to enlarge it)
Source: Flickr

Contarinia tritici (Kirby, 1798) - (lemon wheat blossom midge)

This midge is found in Europe and neighbouring regions. The larvae attack the flowers and developing grains of wheat, resulting in a reduction of grain yield and quality (e.g. see El-Wakeil et al., 2010). During outbreak years, yield losses may reach 40%.

The adult midges emerge from their pupae in the soil during late spring and early summer when the wheat ears develop. Females lay their eggs on the flowers. The emerging larvae feed in the flowers and grains for about 3 weeks and the fully develop larvae drop to the ground for pupation, usually before the harvest. The adult midge is orange-yellow and about 3 mm long.

Vernacular names
• Deutsch: Gelbe Weizengallmücke
• English: yellow wheat blossom midge
lemon wheat blossom midge
• Español: cecidómido amarillo del trigo
• Français: cécidomyie jaune du blé