About Small-headed Stonefly
A large spring-emerging stonefly found in clean upland rivers. Nymphs are predatory, feeding on mayfly and midge larvae. An important bioindicator species.
Did You Know?
Nymphs require the cleanest, most oxygen-rich water of any stonefly, making them sensitive pollution indicators.
Distribution
Where Small-headed Stonefly can be found
Seasonal Activity
Peak activity
Moderate
Low / dormant
Cite This Page
APA:
Orbitrock. (2026). Small-headed Stonefly (Perlodes microcephala). Retrieved from https://orbitrock.com/insect/small-headed-stonefly
MLA:
"Small-headed Stonefly." Orbitrock, https://orbitrock.com/insect/small-headed-stonefly.