Fabricius - English Grain Aphid

Apterous female with green or yellow-brown fusiform body and long legs. Its length varies from 2.7 to 2.9 mm. Antenna is longer than body. Siphunculi are black (1.5 times as long as light-green tail). Winged female has red-brown thorax and green abdominal segments. Eggs are oval and black. Over-wintering takes place during the egg phase on winter cereals, and also on cereal weeds. In the southern areas it takes place during the adult phase. Sexual agamous generations are present during the aphid life cycle. Larval period lasts 8-12 days. In the zone of strong harm the hatching of larvae giving fundatrices is observed in April. Life span of apterous parthenogenetic females is about 30-60 days and they produce 20-40 larvae. The pests feed on winter cereals at first and later on spring crops. The insects prefer the upper part of the ears of plants. The aphids are active and they do not form big colonies. In September, when the sprouts of winter cereals appear, the aphids migrate from summer reservations. At the end of September and the beginning of October viviparous individuals (viginoparae) appear, giving birth to females and males. The eggs are laid at the end of October-November. The female produces 6 to 12 eggs.