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Updated: May 8, 2025
Does he not even allow the admission to escape him that "the spirit of cunning and deception is transmitted"? He sees in the persecutions of the Dytiscus, the "pirate of the ponds," the origin of the faculty which the Phryganea has of refashioning its shield when demanded of it.
It is the larva of Phryganea striata which has been best studied; those of neighbouring species evidently act much in the same way, with differences only in detail. The little carpenter stops a fragment rather longer than his own body, lies on it and brings it in contact with other pieces along his own sides. He thus obtains the skeleton of a cylinder.
They thus construct a case which both resembles formations by special organs and manufacture by the aid of foreign materials. The larvæ of Phryganea, who lead an aquatic life, use this method to separate themselves from the world and prepare tubes in which to dwell.
The cinnamon Phryganea comes up abundantly from among the stones; and the large peat moss to the west of the tarn abounds, as usual, in house-flies and bluebottles, and in the caterpillars of the fox and oak-egger moths: another proof that the most attractive flies are imitations of the real insects.
"To evade the assault of the brigand, the Phryganea must hastily abandon its mantle; it allows itself to sink to the bottom, and promptly removes itself; necessity is the mother of invention." Returning to the lacunae which it so amazes Fabre to discover in our organization, even in the most perfect of us, are they fundamentally very real?
As far as one can judge from the habitation merely, it should be, according to the specialists, Limnophilus flavicornis, whose work has earned for the whole corporation the pretty name of Phryganea, a Greek term meaning a bit of wood, a stick. In a no less expressive fashion, the Provencal peasant calls it lou portofais, lou porto-caneu.
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