Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowse
Info
ImagesLinksBooksData

labium, labia, labial

Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (L)
No Taxon labium, labia, labial
Explanation of Names
From Latin labium, meaning lip.
Identification
labium noun, plural labia, adjective labial - the "lower lip" of the arthropod mouth. It closes the orifice of the mouth from below. Sometimes called the "tongue", and is regarded as a "second maxilla" because its structure is derived from the fusion of two maxilla-like appendages. The labium consists of two parts, the mentum and the ligula. In some groups, the labium is modified for sucking liquids as a proboscis. In some flies, the tip is modified for sopping liquids as a labellum. There are often labial palpi (sensory organs) attached.

(The plural labia would not be used for insects, since there is only one labium. The "upper lip" is the labrum.)

Diagrams and photos showing the labium:
Print References
Gordh, A Dictionary of Entomology, p. 502 (1)
Works Cited
1.A Dictionary of Entomology
George Gordh, David H. Headrick. 2003. CABI Publishing.