SPECIES ID / Invertebrates

Water Beetles

Crawling Water Beetles

Tale te syó:qwem

• 4 genera and 67 species in North America


Identification Tips:

• Body length 2-6 mm
• Yellowish or brownish background with black spots
• Antennae slender; not clubbed at ends
• Numerous rows of small indentations on back
• Hind legs have fringe of stiff hairs to assist in swimming
• Hind legs are almost half covered with a pair of broad plates on the abdomen

Life History:

Larvae and Adults
• Typically found among aquatic plants or algae in still or very slow moving water
• Most are herbivores, feeding on algae, or piercing and sucking juices from plants
• Larvae absorb oxygen through the whole body surface, while adults trap air bubbles under the wings

Very SensitiveSomewhat SensitiveFacultativeSomewhat TolerantVery Tolerant

Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.