sub-imago

A Dictionary of Zoology | 1999 | 463 words | Copyright

sub-imago (dun) In Ephemeroptera (and unique among the Insecta), a pre-adult, winged stage through which the insects pass. The aquatic nymphs emerge on to the surface of water or on to rocks, and take from a few seconds to several minutes to change into sub-imagos. Emergence times vary from species to species, and the sub-imago may last from minutes to a whole day before moulting to the adult stage. Some exotic species breed and die in the sub-imaginal stage.

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MICHAEL ALLABY. "sub-imago." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

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MICHAEL ALLABY. "sub-imago." A Dictionary of Zoology. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-subimago.html

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