White-gall

Guides

• Taxodiomyia cupressi

  Cypress Twig Gall Midge, Cypress Flower Gall Midge

  Taxodiomyia cupressi is a gall midge (Diptera: Cecidomyiidae) that induces distinctive twig galls on cypress trees (Taxodium spp.). The species forms spongy, globular galls on new growth that are initially snow-white and turn brown with age. It has been documented in central Illinois and Missouri, with observations on cultivated bald cypress outside its native range. The midge undergoes complete metamorphosis with multiple generations per year, overwintering as larvae within fallen galls.

  gall-midgeCecidomyiidaeTaxodiumbald-cypressgall-formerpestDipterainsectphytophagouscomplete-metamorphosismultiple-generationsoverwintering-larvaeornamental-pestriparianwetlandMissouriIllinoiscentral-USAtwig-gallspongy-gallwhite-gallbrown-gallexit-holesynchronized-emergencehost-specificTaxodiomyia-cupressiananassasynonymSchweinitz-1822Osten-Sacken-1878