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

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

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

Previous events


Family Pleidae - Pygmy Backswimmers

Pygmy Backswimmer - Neoplea striola Pygmy Backswimmer - Neoplea striola Pygmy Backswimmer Pleidae - Neoplea Pleidae, Neoplea - Neoplea Pleidae, Neoplea - Neoplea Pleidae, Neoplea - Neoplea Pleidae ID req. Water Bug at Matchedash - Neoplea
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 Nepomorpha (Aquatic Bugs)
Superfamily Notonectoidea
Family Pleidae (Pygmy Backswimmers)
Two genera in NA, with 5 nominate spp. (the family is in need of revision and the real number is unknown)(1)(2); ~40 spp. in 3 genera worldwide(3)
Minute, strongly convex, usually pale-colored bugs; hemelytra without membrane, strongly sclerotized and beetle-like; hind tarsus with two distinct apical claws(1)(4)
in Neoplea, the protarsus is 3-segmented (with the basal segment very small), in Paraplea, 2-segmented (with the basal segment very small)(1)
Across NA(2)
on vascular aquatic plants in standing water(2)
prey on microcrustaceans, mosquito larvae and other invertebrates(2)(4)
poor swimmers, prefer to walk on or through thick submerged vegetation(4)
Works Cited
1.Identification manual for the aquatic and semi-aquatic Heteroptera of Florida
Epler J.H. 2006. FL Dept. Env. Prot., Tallahassee, FL. 186 pp.
2.Aquatic Insects of North America
R. W. Merritt, K. W. Cummins, M.B. Berg. 2008. Kendall/Hunt.
3.Biodiversity of the Heteroptera
Henry T.J. 2009. In: Foottit R.G., Adler P.H., eds. Insect biodiversity: Science and society. Oxford: Wiley-Blackwell: 223-263.
4.Australian Faunal Directory