A brief note on sexual differences in pupae of the horse-chestnut leaf miner,Cameraria ohridellaDeschka & Dimic (1986) (Lep., Gracillariidae), a new pest in Central Europe on Aesculus hippocastanum

The horse-chestnut leaf miner, Cameraria ohridella Deschka & Dimic (1986) , is a new pest of horse-chestnut in Central and Eastern Europe. To combat it, for example, by pheromones, experiments which require a differentiation of sexes are necessary. Here an easy method to distinguish the sexes by morphological characters of the pupae is described.