Categories » Mayflies, Caddisflies
Mayflies: Order: Ephemeroptera : Derived from the Greek "ephemera"
meaning short-lived, and "ptera" meaning wings. This is a reference to
the short lifespan of most adult mayflies, which is typically only one
or two days during which they do not eat and have vestigial mouthparts.
The larvae live underwater with gills along the sides of their abdomen
and three or sometimes two "tails", called caudal filaments. The first
winged stage is callled subimago, while the full adult stage is calles
imago. Anglers call them duns and spinners respectively. Sensitive to
pollution, some species are endangered or have recently become extinct.
Among the largest mayflies, recent
increased flights may have be considered a nuisance but
indicates healthier lakes.
Caddisflies: Order: Ephemeroptera : derived from the Greek words
"trichos" meaning hair and "ptera" meaning wings, refers to the long,
silky hairs that cover most of the body and wings. Delicate-looking as
adults, their larvae are especially creative in building protective casing.
All stages are models for fly fishermen who follow their hatchings closely.
Sensitive to low levels of pollution they are indicator species for the
helath of streams and lakes.
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