Limnology

 

Limnology

Mayflies (Ephemeroptera)

The order Ephemeroptera, or mayflies, is an important part of Iowa's aquatic insect fauna. Species from this group of insects are valuable in determining water quality. Mayflies spend most of their life as aquatic larvae or nymphs. Usually they can be found on bottom substrates of rivers, streams and lakes around the state. They are distinguished from other aquatic insects by having wing pads on the thorax, three pairs of segmented legs, gills occurring on the abdomen and an abdomen that terminates with three (sometimes two) thin tail filaments. Adults have membranous wings that are held together above the body when not flying. Their front wings are larger than their hind wings, and two or three long tail filaments are at the end of the abdomen. The adult mayfly is terrestrial and is only alive for a few hours or days. The word Ephemeroptera comes from this reference to the short life span of the adult with the Greek word "Ephemeros," meaning short-lived and "ptera," meaning wing. There are about 2,500 species worldwide and nearly 630 species within North America. Currently, 109 species are reported from Iowa (McCafferty et al. 2006, McCafferty et al. 2003).

Baetidae
  • Acentrella
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  • Acentrella parvula
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  • Acentrella turbida
  • Acerpenna macdunnoughi
  • Acerpenna pygmaea
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  • Baetis brunneicolor
  • Baetis flavistriga
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  • Baetis intercalaris
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  • Baetis tricaudatus
  • Callibaetis ferrugineus
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  • Callibaetis floridanus
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  • Callibaetis fluctuans
  • Callibaetis pallidus
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  • Callibaetis pictus
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  • Callibaetis
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  • Camelobaetidius waltzi
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  • Centroptilum
  • Centroptilum album
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  • Centroptilum bifurcatum
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  • Centroptilum triangulifer
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  • Centroptilum victoriae
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  • Diphetor hageni
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  • Fallceon quilleri
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  • Heterocloeon amplum
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  • Heterocloeon anoka
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  • Heterocloeon frivolum
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  • Paracloeodes minutus
  • Plauditis punctiventris
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  • Plauditis
  • Plauditus cestus
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  • Plauditus cingulatus
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  • Plauditus dubius
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  • Plauditus virilis
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  • Procloeon
  • Procloeon irrubrum
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  • Procloeon rubropictum
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  • Procloeon rufostrigatum
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  • Procloeon viridoculare
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  • Pseudocentroptiloides usa
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  • Pseudocloeon dardanum
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  • Pseudocloeon
  • Pseudocloeon ephippiatum
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  • Pseudocloeon frondale
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  • Pseudocloeon longipalpus
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  • Pseudocloeon propinquum
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Baetiscidae
  • Baetisca
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  • Baetisca lacustris
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  • Baetisca laurentina
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  • Baetisca obesa
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Caenidae
  • Amercaenis ridens
  • Brachycercus lacustris
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  • Brachycercus nasutus
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  • Brachycercus
  • Caenis amica
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  • Caenis anceps
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  • Caenis diminuta
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  • Caenis hilaris
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  • Caenis latipennis
  • Caenis punctata
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  • Caenis tardata
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  • Caenis youngi
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  • Cercobrachys
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Ephemerellidae
  • Danella lita
  • Ephemerella excrucians
  • Ephemerella needhami
  • Ephemerella subvaria
  • Serratella deficiens
  • Eurylophella
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Ephemeridae
  • Ephemera simulans
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  • Hexagenia atrocaudata
  • Hexagenia bilineata
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  • Hexagenia limbata
  • Hexagenia rigida
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  • Pentagenia vittigera
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Heptageniidae
  • Anepeorus simplex
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  • Heptagenia diabasia
  • Heptagenia flavescens
  • Heptagenia marginalis
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  • Heptagenia pulla
  • Heptagenia_diabasia_ventral
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  • Leucrocuta
  • Leucrocuta hebe
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  • Leucrocuta juno
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  • Leucrocuta maculipennis
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  • Maccaffertium exiguum
  • Maccaffertium mexicanum
  • Maccaffertium modestum
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  • Maccaffertium pulchellum
  • Maccaffertium terminatum
  • Maccaffertium vicarium
  • Macdunnoa persimplex
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  • Nixe
  • Nixe inconspicua
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  • Nixe perfida
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  • Nixe rusticalis
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  • Raptoheptagenia cruentata
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  • Rhithrogena
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  • Rhithrogena jejuna
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  • Rhithrogena manifesta
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  • Stenacron candidum
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  • Stenacron carolina
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  • Stenacron interpunctatum
  • Stenonema femoratum
Isonychiidae
  • Isonychia bicolor
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  • Isonychia nymph
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  • Isonychia rufa
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  • Isonychia sicca
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  • Isonychia
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Leptohyphidae
  • Tricorythodes allectus
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  • Tricorythodes stygiatus
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  • Tricorythodes dorsal
Leptophlebiidae
  • Leptophlebia
  • Leptophlebia cupida
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  • Leptophlebia intermedia
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  • Leptophlebia nebulosa
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  • Paraleptophlebia
  • Paraleptophlebia debilis
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  • Paraleptophlebia praepedita
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Metretopodidae
  • Siphloplecton interlineatum
Oligoneuridae
  • Homoeoneuria alleni
  • Homoeoneuria ammophila
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Polymitarcidae
  • Ephoron
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  • Ephoron album
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  • Ephoron leukon
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  • Tortopus primus
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Potamanthidae
  • Anthopotamus
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  • Anthopotamus myops
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  • Anthopotamus verticis
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Pseudironidae
  • Pseudiron centralis
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Siphlonuridae
  • Siphlonurus
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  • Siphlonurus alternatus
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  • Siphlonurus marshalli
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