Symbiosis between Euglena and damselfly nymphs is seasonal.
An endosymbiotic association has been demonstrated between Euglena and nymphs of three species of damselfly. The hindgut of the nymphs is inhabited by the euglenoid only during the winter. Symbiotic associations involving green euglenoids and insects are virtually unknown.
D000818:Animals; D005055:Euglena; D007313:Insecta / Q000502:physiology*; D012007:Rectum / Q000382:microbiology; D012621:Seasons; D013559:Symbiosis