They are unique among insect orders in having a fully winged terrestrial preadult stage, the subimago, which moults into a sexually mature adult, the imago. Mayflies "hatch" (emerge as adults) from spring to autumn, not necessarily in May, in enormous numbers.

The meaning of SUBIMAGO is a stage in the development of some insects (such as the mayflies) between the nymph and imago in which the insect is able to fly but becomes mature only after a further molt.

2023年9月3日 · The life cycle of a mayfly comprises several stages, including the egg, larval (nymph), subimago, and adult (imago) stage 1. Each stage plays a crucial role in the overall development and reproduction of the mayfly.

…a winged form, called the subimago, or dun, emerges. The subimago flies from the surface of the water to some sheltered resting place nearby. After an interval lasting a few minutes to several days, but usually overnight, the skin is shed for the last time, and the imago, or adult…

2025年2月26日 · When growth is complete, the nymphal skin splits down the back and a winged form, called the subimago, or dun, emerges. The subimago flies from the surface of the water to some sheltered resting place nearby.

2024年8月18日 · subimago (plural subimagos or subimagoes or subimagines) A stage in the development of certain insects, intermediate between pupa and imago, during which the insect can fly but must shed a skin before becoming mature.

2021年3月17日 · Today, however, all flying insects stop molting after metamorphosis when they become fully winged. The only exception is the mayflies (Ephemeroptera), which molt in the subimago, a flying intermediate stage between the nymph and the adult. However, the identity and homology of the subimago remains underexplored.

The subimago is a brief transitional stage that molts again into a sexually mature adult (imago). The imago usually has transparent wings and a smooth, shiny exoskeleton in contrast to the cloudy wings and dull, pubescent body of the subimago.

subimago noun - the stage of development in an insect in which the insect is winged and capable of flight but not yet sexually mature. Occurs only in Mayflies (Ephemeroptera). With sexual maturity, the insect becomes an imago (adult) (altered from Wikipedia).

The subimago stage is a crucial period for the development of adult characteristics in mayflies. Related Terms. Ephemeroptera; Mayflies; Instar