Infectivity of four species of nematodes (Rhabditoidea : Steinernematidae,Heterorhabditidae) to the Asian longhorn beetle, Anoplophora glabripennis (Motchulsky) (Coleoptera : Cerambycidae)

Four species of entomopathogenic nematodes, Steinernema carpocapsae, Hetero rhabditis bacteriophora, H. indica and H. marelatus, were tested for their ability to kill and reproduce in larvae of the Asian longhorn beetle, Anopl ophora glabripennis (Motchulsky). The larvae were permissive to all four sp ecies but mortality was higher and production of infective juveniles was gr eater for S. carpocapsae and H. marelatus. The lethal dosage of H. marelatu s was determined to be 19 infective juveniles for second and third instar l arvae and 347 infective juveniles for fourth and fifth instar larvae. H. ma relatus infective juveniles, applied via sponges to oviposition sites on cu t logs, located and killed host larvae within 30 cm galleries and reproduce d successfully in several of the larvae.