NEW POTENTIAL FOR CLASSICAL BIOLOGICAL-CONTROL OF EUCALLIPTERUS-TILIAE (HOMOPTERA, DREPANOSIPHIDAE)

Biological control efforts in California directed against the linden a phid (Eucallipterus tiliae) have been predicated on the basis that the aphid is native to Europe. Although several European parasitoids have become established and attack E. tibiae in California, complete contr ol has not been achieved; the aphid is a problem in Europe as well. Ne w records of E. tiliae from eastern Asia suggest that the aphid may be native there. This area has the greatest species diversity of both th e host genus (Tilia) and the other linden-feeding drepanosiphid aphids . It is recommended that any further efforts for locating importable n atural enemies be focused in this region. (C) 1996 Academic Press, Inc .