Odontomyia hydroleon, also called the barred green colonel, is a European and Palearctic species of soldier fly.Diagnostic characters include:-Discal cell not conspicuously small; vein R2+3 present;discal cell emits 3 veins (M3 present), body not more than 10 mm. long.; frons narrower, rather swollen, predominantly yellow-brown with reddish-brown pattern;in both sexes face more prominent [than in Odontomyia angulata] between eyes, and distinctly snout-like. Lateral spots of abdomen smaller, so that the black areas to reach the lateral margin on each segment.Oldroyd, H., 1969 Diptera Brachycera: Tabanoidea and Asiloidea (Handbooks for the Identification of British Insects 9/4) Royal Entomological Society, London.
Distribution Afghanistan, Albania, Armenia, Austria, Belgium, Bulgaria, China, Czech Republic, Denmark, England, Wales, Estonia, Finland, France, Germany, Hungary, Israel, Lithuania, Mongolia, Netherlands, Norway, Poland, Romania, Russia, Slovakia, Sweden, Switzerland.
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