The trichoptères constitute a much higher order of insects, related of close with the Lépidoptères (mites and butterflies), but adapted for the sea life in their immature stage. Although the adult trichoptères resemble mites primarily, the scientific name (of trichos meaning " poil" , and pteron meaning " aile") testify to their characteristic wings, which rather have usually hairs than the typical scales of the wings of a mite. And although at the larval state the trichoptères resemble a caterpillar primarily, the common noun " caddis" was probably derived from an allusion to their general practice to build is a net or cases. The aspect more studied and fascinating biology of the trichoptères always implied the forms and the behavior compared to these cases intrigants or retirements in which the majority of these larvae live.
Old classifications
In old classifications, the trichoptères ( Trichoptera ) are one of Insecte S, of the Ptérygote S, section of the Néoptère S, division of the Holométabole S, the Mécoptéroïdé S.It is in this order that one meets the caddis-bait , the sedges and the phryganeas , names given to the Trichoptères by the fishermen, in particular with the fly.
Characteristics
The larvae of trichoptère can be of two types:- éruciforme:
- short and broad head
- métathorax entirely sclerified
- first abdominal segment with bulges characteristic
- presence of a mobile case of protection at the beginning of the development
- campodéiforme:
- head longer than broad
- métathorax partially sclerified
- abdomen without bulges
- not of mobile case, only one case fixes at the time of the Histolyse.
Caution
The trichoptères are often confused with the Sialis, kind of the family of the Sialidae, insects about the Mégaloptères.Trichoptère has a Greek etymology coming from trikos (hairs) and pteros (wings): the trichoptères are indeed recognizable with their hairy wings folded up in roof with the repos.
The Sialis are, by the shape of their body, very resembling Trichoptères. They also have, in addition, the wings folded up in roof at rest. But, their wings, strongly réticulées, are membranous and transparent.
classification of Mosely
According to the Classification of Mosely, one finds in Europe:-
of the Inéquipalpes , three S:
-
of the Équipalpes , fifteen S:
See too
- Fishing with the fly
| Random links: | Patrick Cintas | Quest vision | Božica | Saint-Pierre (Belgium) | Nik Zupančič |