Heterarthrus ochropoda (Klug) (Hymenoptera: Tenthredinidae), a new record and new pest of Populus spp. (Salicaceae) in Turkey

A leafminer, Heterarthrus ochropoda (Klug 1818), is a new record for the Turkish fauna and a new pest of Populus tremula L. and P. nigra L. in Turkey. Its developmental stages, biology, damage, and infestation levels were studied in Erzurum during 2001 and 2002. There is one generation a year, and overwintering is in a pupal case in the leaf. Adults appear during mid-June to the first of July, and females oviposit into leaf tissue near the leaf apex. The early instar mines from the apex to the center of the leaf. Each leaf has one larva. The last instar forms a case in the mine at the end of the season and remains in the leaf until pupation the next year. Infestation levels may be as high as 70%.