Taxonomic Notes on Psyllaphycus diaphorinae (Hymenoptera: Encyrtidae) And its Host Associations in Pakistan

The encyrtid wasp, Psyllaphycus diaphorinae Hayat, was reared from nymphs of Asian citrus psyllid, Diaphorina citri Kuwayama, on Citrus spp. and Murraya sp. collected in Faisalabad, Punjab, Pakistan. This discovery is a new host record for P. diaphorinae, which previously had been known only from India from a different, congeneric host. Taxonomic notes on this little known species are given, illustrations of both sexes are provided, and its potential as a prospective classical biological control agent against D. citri is discussed. A correction to the diagnosis of the genus Psyllaphycus Hayat is made: both sexes have the mandible with 2 teeth and a wide truncation.