Black Mayfly vs Legionary Ant
Side-by-side species comparison
| Attribute | Black Mayfly | Legionary Ant |
|---|---|---|
| Scientific Name | Ephemera danica var. nigra | Neivamyrmex nigrescens |
| Order | Ephemeroptera | Hymenoptera |
| Family | Ephemeridae | Formicidae |
| Size | 15-25 mm body | 2-5 mm |
| Habitat | Rivers & Streams | Deserts & Drylands |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Southwestern United States, Mexico |
| Conservation | Least Concern | Least Concern |
Black Mayfly
A dark color variant of the common Green Drake mayfly found in some European populations. The dark form is more prevalent in upland, acidic waters. Important for trout feeding.
Did You Know?
The dark form predominates in acidic upland streams while the typical yellow form prefers alkaline lowland rivers.
Legionary Ant
The most common army ant species in the United States, conducting nocturnal column raids on other ant nests. Workers are small and reddish-brown with reduced eyes.
Did You Know?
They are rarely seen because they raid almost exclusively at night and spend most of their time underground.