In this topic I do a short, very short summary of how to identify the major species of insects that live in rivers Italians, and which play an important role in 'approach to fly fishing. The photos you see in the various post are mine, taken in water-terrarium, and therefore unknown, but if for some reason I could request the 'image of a few insects that have not been able to breed I will refer to photos of the web and specify the authorship in order to avoid misunderstandings. To become a good fly fishermen do not have to become experts of entomologists, but only to recognize the major orders of insects on which to boil our finned friends so that we can more easily sneak up on you. I will try however, to give a 'fingerprint science to what I am about to show, in order to give opportunities to those wishing to go deeper into the issue, however, to find useful knowledge to a wider knowledge even if not strictly useful for fishing! Hold on bottom and banks of streams, springs, rivers, canals and lakes, numerous species of live insects. Those of which we will both start, belong to the orders of Ephemerotteri (ephemeral), Tricopteri (caddisflies) and Plecoptera (stone flies). The various families and species belonging to these orders, the increased use of insects in the fly fishing and those found almost anywhere there is water (but strongly influenced by pollution), and scattered throughout the country! dragonfly, chironomids and then we will talk more! The 'goal that I hope to achieve in the' arc of topics that are taking place is to help you recognize when you are fishing, a short-lived by a caddis or a stonefly and vice versa!
Let's start with this little creature! Ephemeroptera from greek, "the short-lived, insects are small and medium-sized, in various species, colonizing the mountain waters, those of the valley up to the lakes and springs and small materials.
LIFE
The lives of mayflies typically takes place below the surface of 'the water, where they become nymphs from egg stage. During this stage, which usually lasts one year, the nymphs spend their days feeding along the bottom to grow until the metamorphosis that will bring the stadium aericolo of sub-images and then image. The sub-images, in turn, make a few hours after a second transformation that will lead to the stage pictures, stage during which the 'short-lived, now mature sexually, mate and lay their eggs and then drifting lifeless stadium spent. During their aquatic life the ephemeral breathe using gills that are usually on the abdomen but can be found, even though much more rarely, chest or mouth. They have a masticatory apparatus (radula) well developed that allows them to feed on plants and organic debris found in the River. Their abdomen is more or less flattened cylinder composed of 11 segments (called uriti). They have two tails (called cerci) well-developed tail and sometimes a third, the middle one (called paracerco).
morphological structure of the nymphs.
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