Ultrastructural features of chorion and micropyles in eggs of eyprepocnemis plorans (orthoptera, acrididae)

Renata Viscuso, Guglielmo Longo, Andrea Giuffrida, Marina De Ascentiis

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The chorion of the Eyprepocnemis plorans egg is a complex envelope, characterized by a network of interconnected cavities. Two layers can be morphologically distinguished: the exochorion and the endochorion. The exochorion consists of microporosities for air access to the deepest regions of the egg shell, and forms many sculptures on the surface. The endochorion is more complex and can be divided into three functionally different zones. A study of the ultrastructure of the micropylar canal was also carried out to envisage how the different egg envelopes relate to one another at this level. The results show that, with the exception of the vitelline envelope, all the egg envelopes form the micropyles. This is at variance with what has been observed in eggs of other insect species.

Original languageEnglish (US)
Pages (from-to)303-308
Number of pages6
JournalBolletino di zoologia
Issue number4
StatePublished - 1990
Externally publishedYes


  • Acrididaei
  • Chorion
  • Micropylar canal
  • Ultrastructure

ASJC Scopus subject areas

  • Animal Science and Zoology


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