Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Family Baetidae - Small Minnow Mayflies

Mayfly - Callibaetis ferrugineus - female very small mayfly Baetidae, genus Baetis - Baetis Baetidae, Baetis intercalaris - Baetis intercalaris Mayfly? - Callibaetis Callibaetis ferrugineus hageni? - Callibaetis ferrugineus mayfly larva - Callibaetis Mayfly 2 - Callibaetis ferrugineus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Family Baetidae (Small Minnow Mayflies)
133 spp. in 24 genera in our area(1), ~960 spp. in >100 genera worldwide(2)
Usually less than 15 mm
Male eyes are large, turban-shaped, and divided into two parts; hind wings very small to absent.
worldwide and throughout NA(1)(2)