Ameletus bellulus
This record describes Ameletus bellulus (species). Recorded family: Ameletidae. Recorded order: Ephemeroptera.
Identification and Appearance
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Ephemeroptera (Mayflies)
- Suborder
- Pisciforma
- Family
- Ameletidae (Combmouthed Minnow Mayflies)
- Genus
- Ameletus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
throughout much of CA, also recorded from MT and southwestern AB, Canada
Seasonal Activity
late emerger, July-September
Additional species information
Species notes from the sources
Etymology: Zloty 1996 (original description), Latin for "beautiful"
About Mayflies: the wider group
Order-level background for Ephemeroptera, the group containing Ameletus bellulus. Species-specific details appear above.
Group overview
Ephemeroptera (mayflies) includes ~3,500 described species. Adult mayflies are famous for their extraordinarily short lifespans - some species live as adults for only 5 minutes to 24 hours, the shortest adult lifespan of any insect.
Ecological role of the group
Mayfly nymphs spend 1-2 years developing in freshwater before emerging as adults. They are key bioindicators - their presence indicates clean, well-oxygenated water. They are also a primary food source for freshwater fish.
Economic and practical significance of the group
Mayfly hatches are so massive they appear on weather radar - a 2014 Mississippi River hatch near La Crosse, Wisconsin was tracked by the National Weather Service. Mass emergences can cause slippery road conditions and traffic hazards.
Recorded sources for this group: National Weather Service, EPA bioassessment protocols. Imported estimates may describe particular regions or reporting periods.
Frequently Asked Questions About Ameletus bellulus
How big is Ameletus bellulus?
adult male: about 14-16mm
Where is Ameletus bellulus found?
Range: throughout much of CA, also recorded from MT and southwestern AB, Canada
When is Ameletus bellulus active?
Ameletus bellulus: seasonal activity - late emerger, July-September.