yüˈläfəˌdē noun plural
Usage: capitalized
Etymology: New Latin, from Eulophus, type genus (from Greek eulophos well plumed, from eu- + lophos nape of the neck, crest) + -idae
: a large cosmopolitan family of narrow-winged chalcid flies usually with 4-jointed tarsi that are parasitic as larvae in or on the larvae of various other insects