Oviposition process of Solenopsis invicta (Hymenoptera: Formicidae) Queens

R. K. Vander Meer, L. Morel

Research output: Contribution to journalArticlepeer-review


The oviposition process of the red imported fire ant, Solenopsis invicta Buren (Hymenoptera: Formicidae), is described as a succession of four events forming one egg-laying cycle. Each time an egg is laid, the vulva opens and the sting is fully extended. When the vulva closes, the egg is forced to the base of the sting, whereupon the sting is usually retracted across the egg. This phenomenon has been consistently observed for queens from monogynous and polygynous S. invicta colonies. Zero to four eggs can be laid for each opening of the vulva. Multiple egg deposition is more frequent for monogyne queens, and it generally follows an oviposition cycle in which no egg is laid. The egg-laying cycles were evenly distributed during the observation periods, regardless of the total number of eggs laid, thereby suggesting that oviposition is a continuous process in S. invicta.

Original languageEnglish (US)
Pages (from-to)758-762
Number of pages5
JournalAnnals of the Entomological Society of America
Issue number5
StatePublished - Sep 2007
Externally publishedYes


  • Monogyny
  • Oviposition
  • Polygyny
  • Solenopsis invicta
  • Sting apparatus

ASJC Scopus subject areas

  • Insect Science


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