HOST SPECIFICITY OF THE TWO LACE BUGS, DICTYLA ECHII AND DICTYLA NASSATA [HEM, TINGIDAE] POTENTIAL BIOLOGICAL CONTROL AGENTS FOR PATERSONS CURSE (ECHIUM PLANTAGINEUM)

摘要

Two species of lace bugs, Dictyla echii (Schrank) and Dictyla nassata (Puton), were tested for host specificity as potential biological control agents for Paterson's curse, Echium plantagineum L. A range of test plants from the family Boraginaceae, from related families in the order Laminales and from species of economic importance in Australia which have had inadequate exposure in their countries of origin, were tested under both choice and non-choice conditions.