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Emersonella Girault, 1916 comparative info return to: prev home
Face entirely smooth
. Mandibles usually with many small denticles (>3). Transverse frontal groove nearly straight; scrobal grooves present as distinct sulci and uniting before reaching transverse groove. Flagellar formula 1,4,1 in males and females. Pronotum very short dorsally; metapleuron with a strong, sharply pointed projection. Propodeum with semicircular submedian carinae, most broadly separated in middle of propodeum, anterior ends of carinae arising from broad cavities or sunken areas exposing short longitudinal costulae. Petiole braced by ventral flange from gs1. Compare with: Pediobius.

emersonella face.JPG (22213 bytes) emersonella propodeum.JPG (19590 bytes)
1a-b: Emersonella face (left), and propodeum (right)

Biology: Egg parasitoids of Chrysomelidae.

Comments: 9 described species. Not very similar to any other Nearctic genus.

Comparative information:

Pediobius: Submedian propodeal carinae divergent throughout their length, furthest apart posteriorly. Transverse frontal groove V-shaped, scrobal grooves reaching it before meeting. Face sculptured. Petiole with anterior flange embracing propodeal nucha, with ventral tooth. Generally not similar in body form.

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Boucek, Z. 1977. Descriptions of two new species of Neotropical Eulophidae (Hymenoptera) of economic interest, with taxonomic notes on related species and genera. Bulletin of Entomological Research. 67(1): 1-15.

Hansson, C. 2002. Eulophidae of Costa Rica (Hymenoptera: Chalcidoidea), 1. Memoirs of the American Entomological Institute 67.

Schauff, M.E. 1991. The Holarctic genera of Entedoninae (Hymenoptera: Eulophidae). Contributions of the American Entomological Institute 26.

Image credits: 1a-b: Schauff (1991).