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eclose, eclosion

Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (E)
No Taxon eclose, eclosion
Pronunciation
eh-CLOSE-zhun
Explanation of Names
From French ├ęclosion originally from Latin e (ex) out of, plus clausus shut.
Identification
eclosion noun, verb to eclose
1 - the process of emergence (hatching) from the egg
2a - emergence of the adult (imago) from the pupal case (insects with complete metamorphosis)
2b - emergence from the skin of the last instar (insects with incomplete or gradual metamorphosis)

Photos showing eclosion:
Remarks
The word eclosure shows up only on a couple of web sites in the context of entomology--usually it shows up in other contexts is a misspelling of enclosure. The word eclosure does not seem valid--it appears to be a spelling error for eclosion. Gordh, A Dictionary of Entomology (1), has no entry for eclosure, but has one for eclosion.
Print References
Gordh, A Dictionary of Entomology, p. 302 (1)
Internet References
Univ. Florida--glossary
Works Cited
1.A Dictionary of Entomology
George Gordh, David H. Headrick. 2003. CABI Publishing.