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ON the Structure of the Immature Stages of the Frit Fly (Oscinella Frit Linn.)
Author(s) -
Steel A.
Publication year - 1931
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1931.tb02308.x
Subject(s) - instar , biology , larva , imago , frit , zoology , botany , anatomy , archaeology , history
S ummary . 1. The morphology of the immature stages of Oscinella frit are described and figured and certain observations of a biological nature are recorded. 2. The egg is described together with the method of eclosion of the first instar larva. 3. The structure of the larva in its three instars is described in detail with particular reference to the cephalo‐pharyngeal skeleton and the spiracles. 4. The first instar larva differs markedly in structure from that in the two instars which follow. Larvae in the second and third instars are distinguishable, apart from size, only in small structural details. 5. The puparium is described, with particular reference to the spiracles, together with its method of dehiscence during the exit of the imago.