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any insect of the order Plecoptera. North American species, of which there are more than 200, are yellowish, greenish, or brownish in the adult stage and have transparent wings, usually two pairs, but seldom fly. The eggs are deposited in the water; the abundant aquatic nymphs are found under stones, hence their name. Since the gills are poorly developed, the nymphs are confined to well-aerated waters, such as fast streams, where they form one of the most important food supplies for fresh-water fishes. One to three years may be required to reach the adult stage. Fishermen refer to adult stoneflies as browns and imitate their shape in lures. Stoneflies are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Plecoptera.
References in periodicals archive ?
As I studied his method I realised that his dry fly was being retrieved across the current in the manner a stonefly moves when it hatches.
We sorted morphs according to biometric characters (mainly wingpads) and color similarities, and identified and grouped them according to stonefly congeneric specie, which unquestionably under-represents the actual species richness for the river and the region.
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Jim Canter is vice president of engineering at StoneFly Networks.
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By joining with FarStone on this summer promotion, we are giving customers an out-of-the-box solution to store an unlimited number of application programs within their StoneFly IP SAN configuration, with access by multiple users at any time.
StoneFly Networks, a provider of IP-based storage provisioning appliances that enable real-time management and optimization of new and existing storage assets, and LEGATO Systems, Inc.
Featuring Onex of California, LaPlume of Italy, Naot of Israel, Andre Assous, Helle Comfort, StoneFly and many more.
We tried a common fly-fishing term: Caddis, and up popped up dozens of patterns, including the ``Giant Black Stonefly,'' ``Gill Getter'' and the ``Zonker Minnow.
In faster water, a giant golden stonefly nymph waddles off a rock and onto my hand.