Calaphis flava is an aphid species that was first described by Alexander Mordvilko in 1928.
Description Individuals are either green or yellow. Winged individuals and females that produce eggs are present from September to November and have a dark head and thorax with dark stripes on the abdomen. The body length of imagines ranges between 1,9-2,7mm.
Habitat and distribution The aphid inhabits birch trees, predominantly Betula pubescens, across Europe, Asia, South Africa, Australia, and North America. They prefer feeding on young leaves.
Life cycle The species reproduces parthogenically as well as sexually. Parasitization There are four species of parasitoids which parasitize Calaphis flava.
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