Lisa Nagy, Miodrag Grbić

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations


This chapter presents a generalized view of some of the more regular features of insect development. Embryogenesis is the process by which a larva or a juvenile is built from a single egg. The fertilized egg divides to produce hundreds of cells that grow, move, and differentiate into all the organs and tissues required to form a larva or juvenile. Embryogenesis is extremely diverse in different insect species. In some species, a single egg gives rise to several thousand larvae; in others, embryos devour their mothers before hatching. The most extreme variations are found among insects that parasitize other insects. Insect eggs are typically quite large, both in absolute dimensions and relative to maternal body size, and well provisioned with yolk. Eggs vary from about 0.02 to 20 mm in length. To prevent desiccation, they are covered by some of the most resistant and impenetrable egg coverings found in the animal kingdom. Egg contents are protected by a vitelline membrane and covered by an external hard shell, the chorion.

Original languageEnglish (US)
Title of host publicationEncyclopedia of Insects
PublisherElsevier Inc.
Number of pages5
ISBN (Print)9780123741448
StatePublished - 2009

ASJC Scopus subject areas

  • General Agricultural and Biological Sciences


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