Definition:
Relationships / properties:
The postgenal bridge is part of the cuticle. The postgenal bridge is part of the head. The postgenal bridge is part of the postgena.
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.
alternative definition added over 14 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 over 14 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 8 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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