. Cooperative economic insect report. Beneficial insects; Insect pests. - 965 - EUROPEAN POTATO FLEA BEETLE (Psylliodes affinis (Paykull)) Economic Importance - This small beetle was found in July 1968 on bitter night- shade in Albany and Greene Counties, New York. On occasion, it is an important pest in the Molotov Province of the Soviet Union, but is not considered serious elsewhere in the USSR. In France, rather heavy damage occurs sporadically. Adults make round holes in the leaves and larvae attack the roots of the host plant. Although the European potato flea beetle prefers potatoes, it
. Cooperative economic insect report. Beneficial insects; Insect pests. - 965 - EUROPEAN POTATO FLEA BEETLE (Psylliodes affinis (Paykull)) Economic Importance - This small beetle was found in July 1968 on bitter night- shade in Albany and Greene Counties, New York. On occasion, it is an important pest in the Molotov Province of the Soviet Union, but is not considered serious elsewhere in the USSR. In France, rather heavy damage occurs sporadically. Adults make round holes in the leaves and larvae attack the roots of the host plant. Although the European potato flea beetle prefers potatoes, it is generally considered a minor pest of this crop in Europe. Host Plants - Belladonna, bitter night- shade, black henbane, Lycium sp., potato, tobacco, tomato, various other solana- ceous plants, and hops. Distribution - Most of Europe including the USSR and into Siberia. United States: New York Life History - Under conditions in France, overwintering adults appear in the latter half of April when they feed on the foliage of potato plants or other hosts. Females deposit eggs in May and these hatch in 6-8 days. Larvae feed on the rootlets and make galleries in the roots. Here they remain almost con- stantly. Development of larvae to pupae takes about one month. They leave the roots and pupation takes place in the soil a short distance from the host plant. Adults emerge in about 3 weeks and are abundant during July and August. There is one generation a year. Description - Adult - Length mm. Ovoid, overall color light tan. Head black, pronotum and elytra tan. Suture of elytra narrowly bordered with brown. Legs tan except hind femur which is black to reddish black and very large. Ventral surface black. Interceptions - Adults have been taken with dahlia roots from Poland and in a R White package of rose stock from Adult of Psylliodes affinis Reference - Balachowsky, A. and Mesnil, L. 1936. Les Insectes Nuisibles aux Piantes Cultive'es. Vol. 2:1303-1305. Prepared in P
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