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

Upcoming Events

2018 BugGuide Gathering in Virginia July 27-29: Registration and Discussion

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


Genus Geocoris - Big-eyed Bug

Big-eyed Bug - Geocoris pallens Geocoris  - Geocoris punctipes - male - female Geocoris discopterus? - Geocoris Geocoridae? - Geocoris uliginosus Geocoridae? - Geocoris uliginosus Big-eyed Bug - Geocoris uliginosus Big-eyed Bug - Geocoris uliginosus Geocoris uliginosus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Pentatomomorpha
Superfamily Lygaeoidea
Family Geocoridae (Big-eyed Bugs)
Genus Geocoris (Big-eyed Bug)
Explanation of Names
Geocoris Fallén 1814
25 spp. in our area(1), ~170 worldwide(2)
3-4 mm
most of NA and the world; G. punctipes and G. pallens are the most common species along the cotton belt.
On ground between clumps of weeds and sparse grass, especially in sandy places, in woods and near streams(1). southern regions of the U.S. in most cropping systems
generalist predators of small arthropods(2)
Life Cycle
overwinter as adults. Eggs that are laid singly on leaves or stems hatch in approximately one week. Big-eyed bugs have five nymphal instars, each of which lasts from 4 to 6 days. Adults live approximately one month and a female can lay up to 300 eggs during her adult life span.
Big-eyed bugs are among the most abundant and important predaceous insects in many crops in the US(3), e.g. on cotton plantations
Internet References