Synchronous-emergence
Guides
Dolania
American sand-burrowing mayfly
Dolania is a monotypic genus of mayflies containing a single species, Dolania americana. Adults exhibit the shortest known adult lifespan of any insect, completing mating and dying within approximately 30 minutes of emergence. Females die within 5 minutes after depositing eggs. The genus is notable for its highly specialized reproductive strategy involving large eggs and abbreviated adult life.
Dolania americana
American Sand-burrowing Mayfly
Dolania americana is a predacious, sand-burrowing mayfly and the sole species in the genus Dolania. Adults exhibit an exceptionally brief lifespan, emerging before dawn, mating, and dying within approximately thirty minutes. Females deposit eggs in water and die within five minutes of emergence, representing the shortest known adult lifespan among mayflies. The species has a two-year life cycle with synchronous mass emergence and specialized reproductive adaptations including large, energy-rich eggs that produce unusually large first-instar larvae.
Habrophlebia vibrans
pronggilled mayfly
A small stream-dwelling mayfly with a 2-year life cycle, notable for its extended development compared to most mayflies. Adults emerge synchronously in June. Nymphs inhabit gravel substrates and show distinct drift patterns across life stages. The species has been studied in Québec populations, where it reaches final sizes of approximately 5 mm before emergence.
Hexagenia
giant mayflies, burrowing mayflies, fishflies
Hexagenia is a genus of large burrowing mayflies in the family Ephemeridae, comprising eight recognized species. Nymphs construct distinctive U-shaped, ventilated burrows in soft aquatic sediments of lakes, streams, and ponds. Adults are notable for their synchronous mass emergences, which can produce swarms dense enough to appear on weather radar. The genus serves as an important bioindicator of water quality due to its intolerance of pollution and anoxia.
Hexagenia rigida
Great Olive-winged Drake
Hexagenia rigida is a burrowing mayfly (Ephemeroptera: Ephemeridae) native to North America. As a member of the common burrower mayfly genus, it spends most of its life as an aquatic nymph in lake and reservoir sediments, with adults emerging synchronously in large swarms. The species has a multi-year life cycle, typically requiring 3-4 years to complete development from egg to adult in northern climates. Laboratory studies indicate that larval growth and mortality are significantly influenced by food availability and density, with food limitation increasing size variation and mortality rates.
Isoperla lata
Dark Stripetail
Isoperla lata, commonly known as the dark stripetail, is a green-winged stonefly in the family Perlodidae. It is native to North America with documented populations in Labrador, Maine, Massachusetts, Michigan, and Minnesota. The species inhabits cold-water trout streams where it functions as a predator on other aquatic insects. Research from Wisconsin indicates a slow univoltine life cycle with synchronous spring emergence and temperature-dependent egg development.
Neotibicen canicularis
dog-day cicada, dog-day harvestfly, heatbug, Northern Dog-day Cicada
Neotibicen canicularis is an annual cicada species found across much of North America, commonly known as the dog-day cicada or dog-day harvestfly. Unlike periodical cicadas that emerge in synchronized broods every 13 or 17 years, this species appears every summer, though individuals require several years to develop underground. Adults are active during the hot midsummer period traditionally called the "dog days." The species has been documented as a host for multiple flesh fly parasitoids in the family Sarcophagidae, including several first-record associations.
cicadaannual-cicadadog-day-cicadaHemipteraCicadidaeNeotibicenNorth-Americaparasitoid-hostflesh-flySarcophagidaesummersongtymbalnocturnal-emergencenymphroot-feedercarrionEmblemasomaHelicobiaSarcophagaOntarioQuébecOklahomaprairiewoodlandentomologyinsect-photographyMr.-JulyESA-calendarKeith-KennedyTed-MacRaeCatherine-DanaJohn-CooleyGene-Kritskycicada-killerSphecius-speciosusperiodical-cicada-contrastclimate-change-indicatorsoil-temperature-emergencebrood-XIIIbrood-XIXMagicicadaMegatibicenNeotibicen-auriferusNeotibicen-pruinosusNeotibicen-superbusMegatibicen-dorsatusMegatibicen-tremulusMegatibicen-dealbatuscicada-mappingCicada-Safaricitizen-scienceiNaturalistGBIFCatalogue-of-LifeNCBI-Taxonomylate-summerAugustJulyMontréalWoodward-CountyCimarron-CountyMajor-CountyBeaver-CountyAlabaster-Caverns-State-ParkGloss-Mountain-State-ParkBeaver-Dunes-ParkBlack-Mesa-State-Parkshortgrass-prairiehackberrybumeliajunipercanyon-woodlandmesquite-chaparralsand-duneHelianthus-annuusHelianthus-petiolarisProsopis-glandulosaPopulus-deltoidesRhus-aromaticaAsclepias-engelmanniiAsclepias-latifoliaSideroxylon-lanuginosumEuphorbia-marginatajug-trapLindgren-funnelultraviolet-lightmercury-vapor-lightacoustic-communicationpredator-avoidancecamouflagegreen-and-black-colorationcicada-killer-waspparasitoidEmblemasoma-albicomaEmblemasoma-erroHelicobia-rapaxSarcophaga-sarracenioidesSarcophaga-utilisfirst-recordnew-host-associationnew-provincial-recordnutrient-cyclingcarrion-resourcefood-webpredator-preyaerationflaggingtree-pruningclimate-changeearlier-emergencesoil-temperature64-Fahrenheitstraggler-cicadabrood-overlapIllinoisMidwestGreat-Plainseastern-forestannual-emergencesynchronous-emergencemass-emergencebrood-Xbrood-IIbrood-XIVbrood-XXIII17-year-cicada13-year-cicadaMagicicada-septendecimMagicicada-cassiniMagicicada-septendeculaOkanagana-rimosaSay's-cicadaTibicenAbrictaAmphipsaltaAruntaAustrotomaAyuthiaBaeturiaBalintaBasaBrevisanaCacamaCalyriaCicadatraCicadettaCicadivettaCosmopsaltriaCyclochilaDiceroproctaDundubiaEuterpnosiaFidicinaFidicinoidesGaeanaHenicopsaltriaHerreraHuechysHyalessaHylocicadaJassopsaltriaKikihiaLembejaLemurianaMacrotristriaMaoricicadaMoganniaMudaMyerscicadaNeopsaltriaNotopsaltaOkanaganaOkanagodesOligoglenaOnoralnaOudeboschiaPacarinaPahariaPalapsaltaPauropsaltaPictilaPlatypleuraPomponiaPsaltodaPterapsaltaQuesadaQuintiliaRaiateanaSaticulaSemiaSonotympanaSoudaniellaTaipingaTannaTerpnosiaTettigadesTettigettaThophaTibicinaTosenaTryellaUradolichosVenustriaXeropsaltaYezoterpnosiaZammaraZaphsa