A new species of Lydella (Diptera: Tachinidae) from Mexico with a discussion of the definition of the genus.
Following the discovery of Lydella jalisco sp. nov. (from Jalsico, Mexico) a parasitoid of Eoreuma loftini, the limits of the genus Lydella have been widened to include Diatraeophaga syn. nov., Metoposisyrops syn. nov. and Metagonistylum syn. nov. All species regarded as belonging to Lydella are listed.