Key to Neotropical* species of Enicospilus ramidulus species-group

* The Enicospilus of the Galápagos Islands are not considered in this key. For more details about them, see Gauld and Carter (1983).

1 Fore wing vein cu-a reaching M+Cu distad of the base of Rs&M (Fig. 2 A).............. E. cheoi Fernández-Triana, 2005

1’ Fore wing vein cu-a reaching M+Cu coincident or proximal to the base of Rs&M ................................... 2

2(1’) Central sclerite of fore wing discosubmarginal cell absent (Fig. 2 B)....................... E. neotropicus Hooker, 1912

2’ Central sclerite of fore wing discosubmarginal cell present, distinctly pigmented or with only an almost indistinct, unpig- mented thickening present in the fenestra.................................................................. 3

3(2’) Central sclerite of fore wing discosubmarginal cell strongly sclerotized, thicker than Rs+2r, subcircular to D-shaped (Fig. 2 C); notauli entirely absent................................................................ E. purgatus (Say, 1835)

3’ Central sclerite on fore wing discosubmarginal cell weakly sclerotized, thinner than Rs+2r, irregularly shaped (Figs 2 D, 4A); notauli weak but discernible............................................................................. 4

4(3’) Upper mandibular tooth 3 or more times as long as lower tooth; fore wing distal sclerite absent (Fig. 2 D); 5‒6 hamuli on hind wing vein R1 ........................................................................ E. doylei Gauld, 1988

4’ Upper mandibular tooth 1.3 times as long as lower tooth; fore wing distal sclerite present (Fig. 4 A); 8‒9 hamuli on hind wing vein R1 .................................................................................... E. diae sp n.