Definition:
Relationships / properties:
The stipital thickening is a rim.
stipital thickening by Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
stipital thickening by Prentice, M. A. 1998. The comparative morphology and phylogeny of Apoid wasps (Hymenoptera: Apoidea) Thesis (Ph D in Entomology)--University of California, Berkeley..
stipital thickening by Winston, M. 1978. The proboscis of the long-tongued bees: A comparative study. The University of Kansas Science Bulletin 51:631-667.
epistipes by Gotwald, W. 1969. Comparative Morphological Studies of the Ants, with Particular Reference to teh Mouthparts (Hymenoptera: Formicidae). Cornell University Agricultural Experiment Station Memoir 408.
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