Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

The chromosomes of four species of Lymantriids (Lep. Lymantriidae).

Abstract

The authors give details of the chromosomes of Spanish examples of four species of Lymantriids, Orgyia trigotephras Boisd., Leucoma salicis (L.), Lymantria dispar (L.) and Euproctis chrysorrhoea (L.). Notes on the world distribution and life-histories of these moths are given. O. trigotephras has one generation a year and overwinters in the egg stage. The larvae hatch in spring and feed on the new foliage of evergreen oak [Quercus ilex]. Leucoma salicis, a pest of poplar and willow, has two generations a year in Spain and overwinters in the larval stage. Lymantria dispar, a polyphagous forest pest, has one generation a year in Spain, the eggs overwintering and adults being present in June and July. E. chrysorrhoea feeds on a wide variety of forest, fruit and other trees and has one generation a year; the larvae overwinter and near Madrid adults are normally present in June.