Schistonota is a

suborder Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized ...

mayflies Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order ...

. One of the differences between this suborder and its sister group,

Pannota Pannota is a suborder of mayflies. One of the differences between this suborder and its sister group Schistonota concerns the degree of fusion of the wing pads in the final-stage nymph; in Schistonota, the degree of fusion along the mesothorax i ...

, concerns the degree of fusion of the wing pads in the final-stage nymph; in Schistonota, the degree of fusion along the

mesothorax The mesothorax is the middle of the three segments of the thorax of hexapods, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum (dorsal), the mesosternum ( ventral), and the mesopleuron (lateral) ...

is more than half the fore-wing length while in Pannota the degree of fusion is less than half that length. Other differences between the two groups include the morphology of the gills and also behavioural differences. Schistonota nymphs are mostly active swimmers, burrowers or sprawlers, while Pannota nymphs are more passive, slow-moving crawlers. The following superfamilies are recognised: *

Baetoidea Baetoidea is a superfamily of mayflies, which probably includes the most primitive living species. The following families are recognised: *Ameletopsidae * Ametropodidae *Baetidae * Oniscigastridae *Siphlonuridae Siphlonuridae, also known as ...

Ephemeroidea ''Ephemeroidea'' is a superfamily of mayflies. Members of this superfamily are found in most parts of the world with the exception of the Arctic, the Antarctic and Australia. The following families are recognised: *Behningiidae *Ephemeridae * E ...

Heptagenioidea Heptagenioidea is a superfamily of mayflies. Members of this superfamily are found in most parts of the world apart from the Arctic and Antarctic, with Heptageniidae being the most widely distributed family. Heptagenioidea probably originated ...

Leptophlebioidea Leptophlebiidae is a family belonging to the Ephemeropterans that are commonly known as the prong-gilled mayflies or leptophlebiids. It is the only family in the superfamily Leptophlebioidea. There are more than 650 described species of Leptophl ...

References

{{Taxonbar, from=Q3952109 Mayflies Insect suborders