Integrative taxonomy of New World Euplectrus Westwood (Hymenoptera, Eulophidae), with focus on 55 new species from Area de...
By Hansson, C., M.A. Smith, D.H. Janzen, and W. Hallwachs
Full title: "Integrative taxonomy of New World Euplectrus Westwood (Hymenoptera, Eulophidae), with focus on 55 new species from Area de Conservación Guanacaste, northwestern Costa Rica"
Includes key to all known American species, but mostly focused on the descriptions of new Costa Rican species.
Found online @
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4361813/