Chynoweth, RJMarris, JohnArmstrong, KarenChomic, ALinton, JChapman, RB2017-05-232013-01-082013Chynoweth et al. (2013). Predation by Ostenia robusta on Costelytra zealandica pupae. New Zealand Plant Protection, 66,157-161.1175-9003https://hdl.handle.net/10182/8113Soil sampling in a cereal crop near Southbridge, Canterbury, revealed dipteran larvae attacking Costelytra zealandica (White) pupae. Approximately 50% of the pupae had larvae associated with them. DNA sequencing analysis of larval specimens indicated they most likely belonged to the family Dolichopodidae. Larval specimens were reared through to adults and were identified as Ostenia robusta (Hutton) (Diptera: Dolichopodidae). This is the first record of the association of O. robusta larvae with C. zealandica pupae. A general description of the adult and larva of this species is provided, along with DNA sequencing data and observations on its association with C. zealandica pupae. The potential role of O. robusta in regulating populations of C. zealandica is briefly considered.pp.157-161en© 2013 New Zealand Plant Protection Society (Inc.) www.nzpps.org Refer to http://www.nzpps.org/terms_of_use.htmlpredatorCostelytra zealandicaOstenia robustaDolichopodidaegrass grubJournal Article10.30843/nzpp.2013.66.5582ANZSRC::060808 Invertebrate BiologyANZSRC::100202 Biological ControlANZSRC::070308 Crop and Pasture Protection (Pests, Diseases and Weeds)1179-352XANZSRC::30 Agricultural, veterinary and food sciences