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For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Discussion of 2018 gathering

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


Subgenus Chthonolasius

Ant - Lasius umbratus - female Ants, Aphids and Larva - Lasius umbratus Ant - Lasius Ant - Lasius umbratus Ant - Lasius umbratus ants - Lasius umbratus Formicoidea - Lasius umbratus queen shaded fuzzy ant - Lasius umbratus - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Formicoidea (Ants)
Family Formicidae (Ants)
Subfamily Formicinae
Tribe Lasiini
Genus Lasius (cornfield ants, citronella ants)
No Taxon Subgenus Chthonolasius
Explanation of Names
Author: Ruzsky, 1912.
Type species: Formica umbrata Nylander
Most of North America.
More subterranean than the subgenus Lasius, some build large earthen mounds.
Mostly honeydew derived from subterranean plant lice and mealybugs.
"Workers are mainly yellowish and rarely seen above ground. These are parasitic species, whose young queens ... don't found new colonies of their own. Instead, they try to overtake colonies of other Lasius species (like L. neoniger) after overwintering. Indeed, the name Chthonolasius means 'killer' Lasius." [comment by Richard Vernier]
Internet References