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mx id: 503 | OBO id: HAO:0000804 | URI: http://purl.obolibrary.org/obo/HAO_0000804
prementum synonyms: labiostipides, mentum, premental shield, sternum labial, stipulae
Defined (both definition and relationships must be met)
Definition:
The sclerite that is median, is connected via conjunctiva along its proximolateral margins to the stipites, is articulated with the labial palps, is continuous along its distal margin with the ligula and distolateral margins with the distal hypopharynx and receives the site of attachments of the extrinsic labial palp muscles.
written by: Vilhelmsen, L., and I. Miko. 2010. Curators/Head..

Relationships / properties:
The prementum is a sclerite.
The prementum is part of the cuticle. The prementum is part of the labium.

Figures
Zagryphus nasutus
Apis mellifera
Trimorus
Entomacis perplexa (Haliday)
Copyright ©Matthew J. Yoder
Opius dissitus Muesebeck

Label usage (sensu)
prementum by Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
prementum by Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..
prementum by Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
labiostipides by Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
prementum by Karlsson, D., and F. Ronquist. 2012. Skeletal Morphology of Opius dissitus and Biosteres carbonarius, with a Discussion of Terminology and Morphological Variation in Opiinae (Hymenoptera: Braconidae). PLoS ONE 7:1-38.
stipulae by Ross, H. H. 1937. A generic classification of the nearctic sawflies (Hymenoptera: Symphyta). Illinois Biological Monographs 15:1-173.
stipulae by Rivard, I. 1955. Contribution to the morphology of the pine web-spinning sawfly, Cephalcia marginata Middlekauff. The Canadian Entomologist 87:382-399.
sternum labial by Iuga, V. 1989. La structure de la région gnathale n'éthaye pas le origine sphecoïdienne des apoïdes. Travaux du Muséum d'Histoire Naturelle 'Grigore Antipa' 30:41-56.
premental shield 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.
mentum by Bugnion, E. 1924. Le sac infrabuccal et Ie pharynx des fourmis. Soc. BioI. Compt. Rend. 91: 998-1000.
mentum by Williams, F. 1913. Monograph of the Larridae of Kansas. The University of Kansas Science Bulletin 8:119-213.
mentum by Janet, C. 1899. Essai sur la constitution morphologique de la tête de l'insecte. G. Carre Et C. Naud., Paris 74 pp.
mentum by Crampton, G. 1923. A comparison of the labium in certain Holometabolous insects from the standpoint of phylogeny. Proceedings of the Entomological Society of Washington 25:171-180.
Comments and tags
alternative definition added over 9 years ago by Istvan Miko
Basal portion of the labium, which is connected on either side to the stipes of the maxilla, and which bears the ligula apicomedially and the paired labial palpi apicolaterally.
  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 10 years ago by Andy Deans
A labial sclerite articulating basally with the mentum and bearing the glossae, paraglossae, and palpi apically.
  Reference: Goulet, H., and J. T. Huber. 1993. Hymenoptera of the World: An Identification Guide to Families. Research Branch, Agriculture Canada Publication 1894/E., Ottawa, ON 668 pp.
  Cross reference: None provided.

alternative definition added almost 8 years ago by Kelly Dew
The sclerite that is unpaired and is situated ventrally on the labium proximal to the apical lobes (the labial endites) and the palps. The sclerite laterally extends to the hypopharyngeal wall.
  Reference: Karlsson, D., and F. Ronquist. 2012. Skeletal Morphology of Opius dissitus and Biosteres carbonarius, with a Discussion of Terminology and Morphological Variation in Opiinae (Hymenoptera: Braconidae). PLoS ONE 7:1-38.
  Cross reference: None provided.

alternative definition added over 9 years ago by Istvan Miko
The appendage segment that is located on the labium basally, connected laterally to the stipes and proximally to the glossa and the labial palps.
  Reference: Miko, I. 2009. -2019 Curator. Hymenoptera Anatomy Ontology.
  Cross reference: None provided.

alternative definition added about 13 years ago by Andy Deans
the stipidal region of the labium, containing muscles of the palpi and the ligular lobes, and giving insertion to the cranial muscles of the labium
  Reference: Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
  Cross reference: None provided.

alternative definition added about 13 years ago by Andy Deans
the most prominent sclerite in the hymenopteran labium; it is divided into a ventral, median part and a pair of lateral arms. The ventral part is broad and troughlike. It lies ventrally to the bases of the labial palpi, sometimes surrounding them with a sclerotised dorsal process. The lateral arms arise on the proximal parts of the ventral trough. They extend dorsally, towards the distal hypopharynx, where they fuse with the hypopharyngeal rods. The lateral arms may be more or less sclerotised, the sclerotisation sometimes continuing into the proximal parts of the hypopharyngeal rods
  Reference: Vilhelmsen, L. 1996. The preoral cavity of lower Hymenoptera (Insecta): comparative morphology and phylogenetic significance. Zoologica Scripta 25:143-170.
  Cross reference: None provided.

alternative definition added over 6 years ago by Istvan Miko
The sclerite that is unpaired and is situated ventrally on the labium proximal to the endites and palps. The sclerite laterally extends towards the hypopharyngeal wall.
  Reference: Vilhelmsen, L., and I. Miko. 2010. Curators/Head..
  Cross reference: None provided.


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