Macroinvertebrate Key
Sowbug
Facts
- Also called the pillbug
- Approximately 130 freshwater species in North America
- Large numbers of sowbugs indicate organic enrichment
- Crawl slowly over surfaces
Description
- Up to 3/4 inches long
- Seven pairs of legs
- Dark brown to grey in color
- Two pairs of antennae (one pair is much longer than the other)
- Much wider than they are high and rather flat