mayfly

As nouns the difference between deerfly and mayfly

is that deerfly is any of various species of fly which feed on deer, principally in while mayfly is any of the many fragile insects of the order ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As a noun mayfly

is any of the many fragile insects of the order ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between horsefly and mayfly

is that horsefly is any of several medium- to large flies, of the family Tabanidae, that suck the blood of mammals (not to be confused with Stomoxys calcitrans, the stable fly, or dog fly) while mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As nouns the difference between sawfly and mayfly

is that sawfly is any of various flying insects of the suborder symphyta whose ovipositor is long and often serrated and is used to cut into plants to lay eggs while mayfly is any of the many fragile insects of the order ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As nouns the difference between mayfly and sunfish

is that mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults while sunfish is any of various small freshwater fishes of the family Centrarchidae, often with iridescent colours and having a laterally compressed body.

As nouns the difference between caddis and mayfly

is that caddis is the larva of a caddice fly that generally live in cylindrical cases, open at each end, and covered externally with debris while mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As nouns the difference between stonefly and mayfly

is that stonefly is any insect, of the order plecoptera, having a flattened body; they are used by fishermen as bait while mayfly is any of the many fragile insects of the order ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As nouns the difference between midge and mayfly

is that midge is any of various small two-winged flies, for example, from the family Chironomidae or non-biting midges, the family Chaoboridae or phantom midges, and the family Ceratopogonidae or biting midges, all belonging to the order Diptera while mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults.

As nouns the difference between mayfly and mayflies

is that mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults while mayflies is plural of mayfly.

As nouns the difference between dragonfly and mayfly

is that dragonfly is an insect of the suborder Epiprocta or, more strictly, the infraorder Anisoptera with four long transparent wings held perpendicular to a long body while mayfly is any of the many fragile insects of the order Ephemeroptera, that develop in fresh water and live very briefly as winged adults.