Bug FAQTwo-lined Stripetail
Isoperla bilineata · Order: Plecoptera · Family: Perlodidae
The two-lined stripetail (Isoperla bilineata) is a green-winged stonefly in the family Perlodidae. It lives in North America and the adults emerge from the water in spring. Adults feed on pollen, while the larvae are predatory.
Source: Wikipedia
How to recognize it
Isoperla bilineata is a two-lined stripetail stonefly belonging to the family Perlodidae.
Source: Wikipedia
Where it lives
It is found throughout North America.
Source: Wikipedia
What it eats
Adult stoneflies eat pollen, and the larvae are predatory hunters.
Source: Wikipedia
Life cycle
The insects leave the water as adults in the spring.
Source: Wikipedia
When you see it
Adults emerge from the water in spring.
Source: Wikipedia
Where it comes from
It is native to North America.
Source: Wikipedia
Where it is found in the US
Recorded in 22 of 51 states and DC. Most records: Illinois, Indiana, Wisconsin, Minnesota, Iowa, Michigan, Vermont, Kansas.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
Questions people ask
Same family (Perlodidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Isoperla_bilineata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.