See text Encarsia is a large genus of minute parasitic wasps of the family Aphelinidae.
[2] Encarsia is a very complex genus, with specimens showing both inter- and intra-specific variations, making morphological classification difficult.
Females mostly develop as primary endoparasitoids, and males are commonly hyperparasitoids of the same or other species.
[4][5] Species of Encarsia are of particular interest because of their economic importance for biological pest control, especially in horticulture and for crops grown under glass.
Many seem to be extremely host-specific which is an important trait for an acceptable and effective bio-control agent.