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Ametallon Ashmead, 1904 comparative info return to: prev home
Clypeus distinctly outlined by sulci
; upper frons (above transverse frontal groove) smooth and shiny; occiput sharply margined near ocellar triangle. Flagellum with 4 funicular segments and 1 claval segment; flagellomeres with whorls of erect setae in males; postmarginal vein equal or very slightly longer than stigmal vein. Mesoscutal midlobe with 1 pair of setae (the posterior pair). Forewing with 2 setal tracks radiating from stigmal apex, but these sometimes obscured by discal setae (in some Neotropical species). Petiole much broader than long. Gt1 in females with lateral indented, distinctly sculpted areas. Head, body, and legs pale yellow to whitish (parts of antennae, 4th tarsomeres, parts of gastral tergites in males, and ovipositor darker). Compare with: Chrysonotomyia, Omphale.

ametallon_gaster.jpg (113778 bytes)
Ametallon female gastral base (dorsal) with indented area indicated

ametallon _gslat.jpg (144044 bytes)
Ametallon female gastral base (lateral) with indented area indicated

ametallon_face.jpg (232620 bytes)
Ametallon face

Biology: Egg parasitoids of Odonata.

Comments: 3 described species. Poorly known genus. Very similar to Chrysonotomyia, possibly rendering it paraphyletic. Mostly Neotropical, known only from Florida in the Nearctic.

Comparative information:

Chrysonotomyia: Head and body with at least some metallic coloration. Gt1 in females without special lateral indented areas. Upper frons with distinct sculpture.

Omphale: Forewing with at most 1 setal track radiating from stigmal apex. Gt1 in females without special lateral indented areas. Body usually darker, at least in part.

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References

Hansson, C. 1996. Taxonomic revision of the Nearctic species of Omphale Haliday (Hymenoptera: Eulophidae). Entomologica Scandinavica supplement 49.

Image credits: 1a-b: Hansson (1996).