No. #137 · Pond & Stream
Common Mayfly
Ephemera danica
Also called: mayfly
Dragonflies & Damselflies
Where to look
Regions
EuropeN. America
Habitats
ponds & streams
When it is out
- ☀️ Active by day
Seasonal activity
JFMAMJJASOND
Peak is May–Jun.
Research-grade sightings worldwide, by month · Data: iNaturalist community observations
Life cycle
Incomplete metamorphosis
EggNymphAdult
Egg → nymph → adult. The young look like small, wingless adults and grow by molting.
Stage lengths vary by species and temperature, so we don’t print them.
Safety
Peeka gives a safety read on every identification. This species is not in our hand-checked list yet, so we do not print a level here.
In Peekabug
Card #137 in the Pond & Stream set. Catch it with the camera and it checks into your Bug Hotel.
Download on the App StoreNeighbours in the Pond & Stream set
All species pixel art is drawn by us and is not a photograph. · Updated 2026-09-15
