opesiaIn a taxonomic study of the subfamily Phasiinae (Diptera: Tachinidae), seven species and the three genera Opesia Robineau-Desvoidy, Subclytia Pandellé and Xysta Meen are recordedThere are no common members of the genus Opesia but, just in case you stumble upon on, grandis will key to Opesia cana in Belshaw so modify it thus: 1. Thorax before