A key to the species of Trichogramma that parasitize Erinnyis ello in Brazil 1. Setae on flagellum of antenna short; length of longest setae less than 2.0x flagellar width............................ 2 1’. Setae on flagellum of antenna longer; length of longest setae more than 3.0x flagellar width.......................... 3 2. Genital capsule dorsal lamina with distinct lateral lobes, extending beyond genital capsule margins; intervolsellar process distinct and short, generally with apical constriction (Figs 2A, B); flagellum setae short, tapering abruptly at apex, length of longest flagelliform seta 3.0x width of flagellum (Fig. 4C)....................................................................... T. atopovirilia 3’. Genital capsule not broad, dorsal lamina gradually narrowing from base to apex; posterior extension of dorsal lamina weakly sclerotized with apex of posterior extension difficult to distinguish under light microscopy; dorsal carina absent; ventral carina short, indistinct, not reaching midlength of genital capsule; parameres relatively straight; volsella slightly bowed; intervolsellar process long and slender with acute apex; ventral processes positioned near base of intervolsellar process (Figs 3C, D); flagellum setae elongate, gradually tapering to apex, length of longest flagelliform seta> 3.0x width of flagellum (Fig. 4D)................................................................................................ T. pretiosum

Published as part of Vieira, Jaci M., Querino, Ranyse B. & Zucchi, Roberto A., 2014, On the identity of Trichogramma demoraesi Nagaraja (Hymenoptera: Trichogrammatidae), with a checklist and a key to Trichogramma species associated with Erinnyis ello (L.) (Lepidoptera, Sphingidae) in Brazil, pp. 83-89 in Zootaxa 3869 (1) on page 88, DOI: 10.11646/zootaxa.3869.1.8, http://zenodo.org/record/4947175