Annotated Bibliography of Diamondback Moth - part

General
The cabbage flea beetle, Phyllotreta co lumbiana, causes
considerable injury to the small and more tender plants in
both plant beds and newly transplanted fields; as many as 50­
70% of the plants may be killed or badly injured in a few
clays by this pest. Both calcium arsenate and rot enone bearing
dusts have been effective in control ing this insect.
Alertness on the part. of the grower is necessary in order to
catch the infestation at its start and begin dusting before
much damoge has been done. Piowing under the old seed fields
immediately following threshing contributes greatly toward
the control of this insect. since the old fields, if neglected,
become the focal points of new infestations. The imported
cabbage worm, Pieris rapne; the diamon(lback moth, Plutella
macu liptn. is; and the cabbage looper, Antographa brass-icae,
are of minor import ince to the seed industry in the Skagit
Valley. No control measures are practiced, and should they
become necessary, experience in(licates the use of lead arsenate
or cryolite (lusts and sprays.
0031. Carpenter, G. II. 1916. Injurious insects and other
animals observed in Ireland during the years 1914 and 1915.
Econ. Proc. R. Dubl in Soc. 2:22 1-233.
The summer of 1914 was noteworthy for the great abun­
(lance and widespread ocrurre,ce of the diamondback moth, PlutelIa
maculipennis Curtis ( crUdcferarum Zell.), which caused
exten ive damage to the leaves of Cruciferous crops, especial
ly white turnips and swedes. Caterpillars of the turnip
moth, K,.von (A ro tis) s oget uM L., were very destructive to
cabbage and turnip in King's Co. and Queen's Co. in late July
ani early August., cating the plants .just below the surface of
the ground. The cabbage fly, (hortophila (Phorbia) brassicae
Bch. , was, as usual, abundant, and the maggots were even
found feeding on radishe~s in a garden in Co. Dublin. [RAE]
0032. Cass, L. M. 1959. Damage to cabbage by the clover
cutworm, Scotogramma irifolii (Rott.) (Lepidoptera: Phalaenidae).
Can. Entomol. 9[:477.
Ha(loni (Scotogranmm) trifolii (Rott.) has rarely been
recorded attacking cabbage, anid its numbers were almost always
negligible on it in the Ottawa Villey of Ontario (luring
surveys in 1949-58. The larvae were commoner in the early
summer of 1956, however, and were sufficiently injurious to
cause monetary loss in a study field of early cabbage. The
feeding injury resembles that. due to Pieris rapac (L.), but
is more confined to the developing head, which frequently becomes
ma I formed. On 22 June, infestation reached one larva
per plant and exceeded that by Plutolla maculipennis (Curt.)
or Trichoplus in ni (ib., which are common pests of cabbage
in the area. [RAE]
0033. Chesnokov, P. G. 1936. The distribut ion and economic
importance of pests of the foliage of cruciferous vegetable
crops. Izd. vsesoyuzn. Akad. S. --kh. Nauk Tm. Lenina, Lenin­
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