. Cooperative economic insect report. Beneficial insects; Insect pests. - 1102 - life cycle from egg to adult being 67-71 days. Adults first appear in May and begin feeding on nettle and hop plants. Eggs are deposited in the soil near hop hills during May and June and the resulting larvae feed on roots of various plants including hop. Adults reappear in September and start to feed in the cones. In the USSR, the biology as recorded in the northern districts of the Black Soil Zone is as follows: Adults begin to emerge at the beginning of May, being particularly abundant in July and disappearing
. Cooperative economic insect report. Beneficial insects; Insect pests. - 1102 - life cycle from egg to adult being 67-71 days. Adults first appear in May and begin feeding on nettle and hop plants. Eggs are deposited in the soil near hop hills during May and June and the resulting larvae feed on roots of various plants including hop. Adults reappear in September and start to feed in the cones. In the USSR, the biology as recorded in the northern districts of the Black Soil Zone is as follows: Adults begin to emerge at the beginning of May, being particularly abundant in July and disappearing about the middle of August. Each female may lay about 300 eggs, which are deposited in the upper layer of soil. Larvae hatch in 8-10 days and feed on small roots of hemp, pupating in the soil. The total life cycle from egg to adult is completed in 52-70 days. New adults attack leaves of hemp and hop plants, passing to these crops from bigsting nettle (Urtica dioica). Description: ADULT - Oval, coppery or greenish. Head crossed furrows present between eyes; antennae dark, li thickly punctured. Elytra long, with regular and deep brown, femora darker. Differs from Chaetocnema concinn 10-segmented antennae and. hind tibiae"! (See illustrati EGG - Pale yellow, oval. Length mm. LARVA - White acic and anal plates light brown. Length 5-6 mm, PUPA abdominal segments are four setae in a cross-line and s segments. Length 3 mm. (Prepared in Survey and Detect ation with other ARS agencies) CEIR 11 (49):12-8-61. small, with punctures; two ghter at base. Thorax punctures. Legs reddish- a and C. tibialis in the on below), Length 2-3 mm. head capsule, prothor- - White, On first four ix on the remaining ion Operations in cooper-. Left - Adult of Chaetocnema tibialis breviuscula (Fald.) Right - Adult of Psylliodes attenuata Koch. Major references: 1. Andreeva, N, V. 1930, The Hemp Flea Beetle and its Economic Importance, , Oblastn. Sel,-Khoz, Opuitn, Stantz, Bui. 1:20-23. (In
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