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mx id: 1278 | OBO id: HAO:0000411 | URI: http://purl.obolibrary.org/obo/HAO_0000411
hypostoma
Defined (both definition and relationships must be met)
Definition:
The area that extends on the posterior (ventral) margin of the oral foramen along the site of attachments of the conjunctiva connecting the cranium with the maxillae and is delimited laterally by the pleurostomal fossa.
written by: Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.

Relationships / properties:
The hypostoma is a area.
The hypostoma is part of the cranium. The hypostoma is part of the cuticle.

Figures
Trimorus

Label usage (sensu)
hypostoma by Vilhelmsen, L. B. 1999. The occipital region in the basal Hymenoptera (Insecta): a reappraisal. Zoologica Scripta 28:75-85.
hypostoma by Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
Comments and tags
alternative definition added over 14 years ago by Istvan Miko
Posterior, more or less inflected portion of the head capsule on either side of and often dorsal to the labiomaxillary complex, which is delimited laterally by the hypostomal carina.
  Reference: Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..
  Cross reference: None provided.

alternative definition added about 15 years ago by Istvan Miko
The part of the subgenal margin of the cranium posterior to the mandible, usually narrow, but sometimes extended mesally as a hypostomal plate or as a hypostomal bridge in the ventral wall of the head.
  Reference: Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
  Cross reference: None provided.


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