The phryganea

Georges K. Shaw, General Zoology or Systematic Natural History, vol. VI, part II, Londres, G. Rearfley, 1806.

The phryganeae proceed from aquatic larvae of a lengthened shape, residing in tubular cases, which they form by agglutinating various fragments of vegetable substances, particles of gravel, etc. etc. These tubulars cases are lined within by a tissue of silken fibres, and are open at catch extremity.The included larvae, when feeding, prot nude the head and fore-parts of the body…