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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (I)
No Taxon imago
Explanation of Names
From Latin imago meaning image or likeness.
imago noun, plural imagines or imagos - the adult, sexual stage (also called the "perfect stage") of an insect, especially one with complete metamorphosis. Typically, the imago is the only stage with fully functional wings, if present at any stage of the insect life-cycle.

Mayflies (Ephemeroptera) have a winged stage just before the adult, the subimago. The final, sexually mature, stage is called an imago, even though mayflies are hemimetabolous (undergoing incomplete metamorphosis).
See Also
egg (embryo)
imago, subimago
Print References
Gordh, A Dictionary of Entomology, p. 467 (1)
Internet References
Wikipedia: Imago
Wiktionary: Imago
Works Cited
1.A Dictionary of Entomology
George Gordh, David H. Headrick. 2003. CABI Publishing.