Data on the biology and damage of the fruit-tree leaf miner, Leucoptera scitella Zeller (Lepidoptera: Leucopteridae).
There were 3 generations of the fruit-tree pest Leucoptera malifoliella (Costa) (scitella (Zell.)) in the Bacs-Kiskun department of Hungary in 1982, and 50% or more of the foliage dropped prematurely as a result of damage caused by the larvae in an area of 503 ha. The parasites Closterocerus trifasciatus Westw., Chrysocharis nephereus (Wlk.) (Kratochviliana nephereus) and an unidentified chalcidid are reported; the distribution and frequency of parasitism did not vary much between large- and small-scale orchards. Of 8 insecticides tested, methomyl (as Lannate 20 L at 3 litres/ha) and triazophos (as Hostathion 40 EC at 2.5 litres/ha) were effective against young larvae.