| Stenacron | |
|---|---|
 | |
| Stenacron interpunctatum | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Ephemeroptera |
| Family: | Heptageniidae |
| Genus: | Stenacron Jensen, 1974 |
Stenacron is a genus of mayfly in the family Heptageniidae (the flat-headed mayflies), [1] with a distribution across eastern North America. [2]
Larvae can survive in most shallow freshwater environments, including stagnant, low oxygen, and polluted waters, however they prefer the shallow, slow moving edges of rivers where they cling to the underside of rocks. [3]
Thomas Say first documented the species interpunctatum in 1839 in Indiana from 20 holotypes and 14 paratypes. Hagen, in 1861, confirmed and expanded the geographical range of the species with a collection of other specimens from Virginia that concurred with Say’s haplotypes. In 1974, the interpunctatum group was listed by Steven L Jensen as the genus Stenacron.
Although there are 7 recognized species in the genus, the variation amongst populations of S. interpunctatum forms the Stenacron interpunctatum complex , which comprises 16 closely related subspecies. [4]
List of the currently valid species as of 2014:
Data sources: i = ITIS, [5] c = Catalogue of Life, [6] g = GBIF, [7] b = Bugguide.net [8]
Synonym forms that make up the interpunctatum complex. [9]
Baetis is a genus of mayflies of the family Baetidae, known as the blue-winged olive to anglers. There are at least 150 described species in Baetis. They are distributed worldwide, with the most variety in North America and northern Europe.
Ecdyonurus is a genus of mayflies of the family Heptageniidae.
Cinygmula is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 30 described species in Cinygmula.
Heptagenia is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 20 described species in Heptagenia.
Rhithrogena is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 150 described species in Rhithrogena.
Camelobaetidius is a genus of small minnow mayflies in the family Baetidae. There are at least 40 described species in Camelobaetidius.
Fallceon is a genus of blue-winged olives in the family of mayflies called Baetidae. There are about 19 described species in Fallceon.
Heterocloeon is a genus of small minnow mayflies in the family Baetidae. There are about nine described species in Heterocloeon.
Paracloeodes is a genus of small minnow mayflies in the family Baetidae. There are at least 20 described species in Paracloeodes.
Habrophlebia is a genus of pronggilled mayflies in the family Leptophlebiidae. There are about nine described species in Habrophlebia.
Neoephemera is a genus of large squaregill mayflies in the family Neoephemeridae first described by McDunnough (1925). and containing approximately six described species in Neoephemera.
Baetiscidae is a family of mayflies. It contains a single extant genus, Baetisca, native to North America with around 12 species. The family is noted for their spined armoured larvae, which live in flowing water pools and on the edges of streams where they are detritivores, consuming fine particles of organic matter. Two other extinct genera are known, extending back to the Early Cretaceous. They are closely related to Prosopistomatidae which have unusual, beetle-like nymphs as well as the extinct genus Cretomitarcys, with the three groups constituting the clade Carapacea.
Drunella is a genus of spiny crawler mayflies in the family Ephemerellidae. There are at least 20 described species in Drunella.
Ametropodidae is a family of mayflies in the order Ephemeroptera. There are at least three genera and three described species in Ametropodidae.
Potamanthus idiocerus is a species of hacklegilled burrower mayfly in the family Potamanthidae.
Potamanthus longitibius is a species of hacklegilled burrower mayfly in the family Potamanthidae.
Potamanthus luteus is a species of hacklegilled burrower mayfly in the family Potamanthidae. It is or was found principally on the Rivers Usk and Wye in the UK; in the Usk it may have become extinct and in the Wye it has suffered a population crash.
Epeorus vitreus is a species of flatheaded mayfly in the family Heptageniidae. It is found in southeastern Canada and the eastern United States.
Gratia is a genus of small minnow mayflies in the family Baetidae. There are at least two described species in Gratia.
Maccaffertium is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 20 described species in Maccaffertium.
Media related to Stenacron at Wikimedia Commons