1a: Entedon dorsal view
2a-b: Entedon anterior part of mesosoma with lateral pronotal lobe indicated (left), and face (right)
3a-b: Entedon propodea
Biology: Primary parasitoids of Coleoptera.
Comments: Very large genus, easily recognized by propodeal features and general body form. The longitudinal groove that the median carina is placed in may be weak, but recognizable by an experienced observer. The median carina placed in a sunken channel is remotely reminiscent of the raised median strip flanked by sunken channels in Horismenus, Paracrias, and similar genera.
Chrysocharis: Propodeum usually without a distinct median carina, seldom with a straight and regular one, and never with one placed in a longitudinal groove; median panels never separated from supracoxal flange by costulate channel; plicae present in some species.
Pediobius: Propodeum in most species with 1 median carina splitting posteriorly or with 2 submedian carinae diverging posteriorly, anterior portion of median carina without cup-shaped structure, but sometimes with tooth-like extension (which becomes diverging carinae posteriorly); some species with rased median strip instead of median or submedian carinae; plicae present. Petiole stout, with dorsal flange embracing propodeal nucha, with ventrally-projecting tooth. Gt1 usually covering 0.5x or more of gaster. Usually easily distinguished based on propodeal features. The median propodeal carina of Pediobius branches posteriorly, while that of Entedon may branch anteriorly (very rarely forming a mildly Y-shaped carina), if at all.
Paracrias: Propodeum without median carina, with broad, smooth, raised median strip flanked by sunken channels; nucha roughly sculpted and elongate or posterior half of propodeum rugulose. Seldom confusable with Entedon, in all cases clearly distinguishable by propodeal features.
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Boucek, Z. 1988. Australasian Chalcidoidea (Hymenoptera). A biosystematic revision of genera of fourteen families, with a reclassification of species. CAB International, Wallingford, UK.
Schauff, M.E. 1988. The species of Entedon (Hymenoptera: Eulophidae) in America North of Mexico. Journal of the New York Entomological Society. 96: 30-62.
Schauff, M.E. 1991. The Holarctic genera of Entedoninae (Hymenoptera: Eulophidae). Contributions of the American Entomological Institute 26.
Image credits: 1a: Boucek (1988). 2a: Schauff (1991). 2b, 3a-b: Schauff (1988).