The cup-shaped, sclerotised
region et the
apical portion of the
tendon of the
basalare that serves as the site of origin of the
basalare muscles.
written by: Vilhelmsen, L. B., I. Miko, and L. Krogmann. 2010. Beyond the wasp waist: structural diversity and phylogenetic significance of the mesosoma in apocritan wasps (Insecta: Hymenoptera). Zoological Journal of the Linnean Society [=Journal of the Linnean Society of London, Zoology] 159:22-194.