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mx id: 1638 | OBO id: HAO:0000777 | URI: http://purl.obolibrary.org/obo/HAO_0000777
postgenal bridge synonyms: genal bridge
Defined (both definition and relationships must be met)
Definition:
The subforaminal bridge that is sclerotised and limited anteriorly (ventrally) by the hypostomal carina and is subdivided medially by the median sulcus of the postgenal bridge.
written by: Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.

Relationships / properties:
The postgenal bridge is a subforaminal bridge.
The postgenal bridge is part of the cuticle. The postgenal bridge is part of the head. The postgenal bridge is part of the postgena.

Figures
Trimorus

Label usage (sensu)
postgenal bridge by Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
genal bridge by Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..
postgenal bridge by Gauld, I. D., Bolton, B. (eds.). 1988. The Hymenoptera. Oxford University Press and British Museum (Natural History), Oxford 332 pp.
Comments and tags
alternative definition added over 11 years ago by Istvan Miko
Median fusion of the postgenae, forming a bridge that separates the foramen mangnum from the oral fossa.
  Reference: Gauld, I. D., Bolton, B. (eds.). 1988. The Hymenoptera. Oxford University Press and British Museum (Natural History), Oxford 332 pp.
  Cross reference: None provided.

alternative definition added about 11 years ago by Istvan Miko
Term used for a posteromedian region of the head between the occipital foramen and mouth cavity if undifferentiated except for a median line between the foramen and mouth cavity; in some chalcids a postgenal bridge results from inflection of the postgenae over the gula, but in others it likely results from fusion of the gula with the postgenae (see also hypostomal bridge).
  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.

comment added over 5 years ago by Istvan Miko
Dominique Zimmerman pointed out that the old definition "The subforaminal bridge that is sclerotised and limited anteriorly (ventrally) by the hypostomal carina and is subdivided medially by the postgenal sulcus." is incorrect since it refers to the postgenal sulcus that is usually paired so cannot divide the postgenal bridge.
  Reference: Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
  Cross reference: None provided.


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