Ischnopterapion (Chlorapion) virens (Herbst) (Coleoptera : Curculionoidea : Brentidae : Apioninae), a palearctic clover pest new to North America: Recognition features, distribution and bionomics

Ischnopterapion (Chlorapion) virens (Herbst) is reported for the first time in North America based on collections in 22 counties in Pennsylvania, 5 co unties in New York, 3 counties each in Maryland and New Jersey, and 1 count y each in western Connecticut, northern Delaware, and northern Virginia. Th is immigrant weevil is a pest of clover (Trifolium spp.), with adults injur ing the foliage, and larvae mining in the petioles, stems (stolons), root-c rowns, and roots. A detailed redescription and a thorough diagnosis of the adult are given to allow its identification and separation from similar Nea rctic species, and its biology and seasonal history in the Palearctic regio n are summarized from the European literature.