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Insects by Common Name

| Match | Scientific Name |
| Maccaffertium vicarium | |
| Ephemera simulans | |
| Heptagenia pulla |
Like most common names, "March Brown" can refer to more than one taxon. They're previewed below, along with 6 specimens. For more detail click through to the scientific names.
View 10 PicturesI collected this mayfly on the same trip as a female of the same species. After these photos it molted into a spinner. This is the form of Maccaffertium vicarium which anglers call the "Gray Fox."
View 7 PicturesI collected this mayfly on the same trip as a male of the same species. They are Maccaffertium vicarium mayflies of the type formerly known as Stenonema fuscom, the "Gray Fox."
View 5 PicturesI used a microscope to positively identify this nymph as Heptagenia pulla. (Edit six years later: I wish I had explained why I was positive about this. It may have been based on color patterns in an angling text, which are not especially reliable for species ID anymore.)
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