The Fruiting of the Blue Flag (Iris Versicolor L.)
The Fruiting of the Blue Flag (Iris Versicolor L.)
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To quickly assess the difficulty of the text, read a short excerpt:
C. Davis as very destructive to imported garden Irides, at Flint, Mich. Insect Life, vol. vii, p. 201, 1894.
8 I did not rear this species; two of my larvae taken for rearing were parasitized with a species of Apanteles ; the remainder (as well as many in the field) died of some bacterial disease. Arsilonche albovenosa was abundantly parasitized with Rhogas intermedius Cr.
Digitized by Google 372 THE AMERICAN NATURALIST. [Vol. XXXIV grua Walk. At the time the Iris flowers opened, these larvae w...ere well grown. They then forsook the leaves, on which they had been feeding hitherto, for the daintier floral diet.
Chcetopsis cenea Wied. and its Train. — This little bud- destroying ortalid fly deserves special mention, because in cer- tain situations it does more to prevent fruiting than all other insect enemies combined. Furthermore, its attack comes earli- est ; its larva enters the pedicel at the base of the flower bud and bores downward into the common flowering stem (pe- duncle), killing not one bud, but the cluster of two or three arising at that point.
What to read after The Fruiting of the Blue Flag (Iris Versicolor L.)?
You can find similar books in the "Read Also" column, or choose other free books by James George Needham to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
C. Davis as very destructive to imported garden Irides, at Flint, Mich. Insect Life, vol. vii, p. 201, 1894.
8 I did not rear this species; two of my larvae taken for rearing were parasitized with a species of Apanteles ; the remainder (as well as many in the field) died of some bacterial disease. Arsilonche albovenosa was abundantly parasitized with Rhogas intermedius Cr.
Digitized by Google 372 THE AMERICAN NATURALIST. [Vol. XXXIV grua Walk. At the time the Iris flowers opened, these larvae w...ere well grown. They then forsook the leaves, on which they had been feeding hitherto, for the daintier floral diet.
Chcetopsis cenea Wied. and its Train. — This little bud- destroying ortalid fly deserves special mention, because in cer- tain situations it does more to prevent fruiting than all other insect enemies combined. Furthermore, its attack comes earli- est ; its larva enters the pedicel at the base of the flower bud and bores downward into the common flowering stem (pe- duncle), killing not one bud, but the cluster of two or three arising at that point.
What to read after The Fruiting of the Blue Flag (Iris Versicolor L.)?
You can find similar books in the "Read Also" column, or choose other free books by James George Needham to read onlineMoreLess
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