alternative definition added almost 16 years ago by Istvan Miko
the sclerotized subdivision of a sternum bounded by grooves or by membranous lines or areas (see also sternum).
Reference: Goulet, H., and J. T. Huber. 1993. Hymenoptera of the World: An Identification Guide to Families. Research Branch, Agriculture Canada Publication 1894/E., Ottawa, ON 668 pp.
Cross reference:
None provided.