Flatheaded-mayfly
Guides
Arthroplea bipunctata
flatheaded mayfly
Arthroplea bipunctata is a species of flatheaded mayfly in the family Heptageniidae (sometimes historically placed in Arthropleidae). It is known from North America, with records from the Nearctic region. The species was described by McDunnough in 1924, originally as Cinygma bipunctata. Like other flatheaded mayflies, it belongs to a group adapted to clinging in fast-flowing waters.
Cinygma lyriforme
Cinygma lyriforme is a species of flatheaded mayfly in the family Heptageniidae, originally described as Ecdyonurus lyriformis by James Halliday McDunnough in 1924. The species name "lyriforme" refers to the lyre-shaped pattern characteristic of this taxon. Like other members of Heptageniidae, it possesses dorsoventrally flattened nymphs adapted for clinging to substrates in flowing water. The genus Cinygma is a small Nearctic genus with limited species diversity.
Epeorus deceptivus
flatheaded mayfly
Epeorus deceptivus is a species of flatheaded mayfly in the family Heptageniidae. First described by McDunnough in 1924, it was originally placed in the genus Cinygma before being transferred to Epeorus. It is found in North America.
Epeorus fragilis
flatheaded mayfly
Epeorus fragilis is a species of flatheaded mayfly in the family Heptageniidae, first described by Morgan in 1911. It is distributed across North America. As a member of the order Ephemeroptera, it undergoes aquatic larval development before emerging as a short-lived adult.
Heptagenia flavescens
flatheaded mayfly
Heptagenia flavescens is a species of flatheaded mayfly in the family Heptageniidae. The species has been documented in North America and Central America, with records indicating a southwestern range extension. As with other members of Heptageniidae, it possesses the characteristic flattened head morphology associated with this group of mayflies.
Heptagenia solitaria
solitary flat-headed mayfly
Heptagenia solitaria is a species of flatheaded mayfly in the family Heptageniidae, first described by McDunnough in 1924. The species is distributed across southwestern and northern Canada and the western United States. As a member of the Heptageniidae, it belongs to a family of mayflies commonly known as flatheaded mayflies due to their distinctive head morphology.
Leucrocuta hebe
flatheaded mayfly
Leucrocuta hebe is a species of flatheaded mayfly in the family Heptageniidae. This species is found across parts of North America, including the northern and southeastern United States and northern Canada. As a member of the order Ephemeroptera, it has an aquatic larval stage and a short-lived adult stage.
Leucrocuta juno
Leucrocuta juno is a species of flatheaded mayfly in the family Heptageniidae, described by McDunnough in 1924. It belongs to the order Ephemeroptera, a group of aquatic insects known for their brief adult lifespan. The species is native to North America and is part of a genus characterized by distinctive morphological features typical of heptageniid mayflies.
Leucrocuta thetis
Leucrocuta thetis is a species of flatheaded mayfly in the family Heptageniidae. It is known from North America. As a member of the Heptageniidae, it belongs to a group of mayflies commonly associated with running water habitats. The species was described by Traver in 1935.
Maccaffertium
flatheaded mayflies
Maccaffertium is a genus of mayflies in the family Heptageniidae, commonly known as flatheaded mayflies. The genus was established by Bednarik in 1979 and contains approximately 19–20 described species. Like other members of Heptageniidae, these mayflies are characterized by their flattened, streamlined bodies adapted for life in flowing water. The genus is found in North America, with species distributed across various freshwater habitats.
Maccaffertium exiguum
flatheaded mayfly
Maccaffertium exiguum is a species of flatheaded mayfly in the family Heptageniidae. This aquatic insect is native to North America, with a documented range extending across southeastern Canada and the eastern United States. Like other members of the genus, it develops through aquatic nymphal stages in freshwater habitats before emerging as a winged adult.
Maccaffertium meririvulanum
fresh flat-headed mayfly
Maccaffertium meririvulanum is a species of flatheaded mayfly in the family Heptageniidae, characterized by its distinctive flattened head morphology typical of this group. The species is known from North America, where it inhabits freshwater lotic environments. As with other members of the genus, it undergoes the unique mayfly developmental pattern involving a winged subadult (subimago) stage that molts once more to reach sexual maturity.
Maccaffertium pudicum
flatheaded mayfly
Maccaffertium pudicum is a species of flatheaded mayfly in the family Heptageniidae. It is found in North America. The species exhibits the characteristic subimago stage typical of mayflies, where fully functional wings develop before the final molt to adulthood.
Maccaffertium smithae
Maccaffertium smithae is a species of flatheaded mayfly in the family Heptageniidae, described by Traver in 1937. As a member of the Heptageniidae family, it possesses the characteristic flattened head shape typical of this group. The species is known from North America, though specific details about its biology and ecology remain limited in the available literature.
Nixe inconspicua
Nixe inconspicua is a species of flatheaded mayfly in the family Heptageniidae, first described by McDunnough in 1924. As a member of the Heptageniidae, it possesses the characteristic dorsoventrally flattened body form typical of this family. The species is known from North America, though specific details about its biology and ecology remain limited in the available literature.
Stenacron carolina
Carolina flat-headed mayfly
Stenacron carolina is a species of flatheaded mayfly in the family Heptageniidae. It is found in North America. The species was described by Banks in 1914. Like other members of the genus Stenacron, it is associated with aquatic habitats.
Stenacron pallidum
flatheaded mayfly
Stenacron pallidum is a species of flatheaded mayfly in the family Heptageniidae. It is found in the eastern United States. Like other members of the genus Stenacron, it is associated with freshwater stream habitats.