Report on the gipsy moth work in New England . W FlG. 1.—Anastatus bifasciatus: Adult female. Greatly enlarged. (From Howard.) Two species of minute hymenopterous parasites which attack theeggs of the gipsy moth have become established in New , Anastatus bifasciatus Fonsc. (fig. 1), occurs in Europe andJapan, and although only one brood of this insect is reproduced each. Fig. 2.—Schedius kuvanae Adult female. Greatly enlarged. (From Howard.) season, it has succeeded in maintaining itself and increasing in prac-tically every locality in which it has been liberated. The otherspecies,
Report on the gipsy moth work in New England . W FlG. 1.—Anastatus bifasciatus: Adult female. Greatly enlarged. (From Howard.) Two species of minute hymenopterous parasites which attack theeggs of the gipsy moth have become established in New , Anastatus bifasciatus Fonsc. (fig. 1), occurs in Europe andJapan, and although only one brood of this insect is reproduced each. Fig. 2.—Schedius kuvanae Adult female. Greatly enlarged. (From Howard.) season, it has succeeded in maintaining itself and increasing in prac-tically every locality in which it has been liberated. The otherspecies, Schedius kuvanae How. (fig. 2), was imported from Japan. 6 BULLETIN 204, U. S. DEPARTMENT OF AGRICULTURE. A brood of this species develops under favorable weather conditionsin about four weeks. The first brood appears in August and theinsect continues to breed until cold weather sets in. Owing to thefact that several broods develop in a single season, the insect increasesvery rapidly. It can be reared in the laboratory for the purpose ofcolonization, and this work is being done each year. Unfortunatelythe insect does not always survive the winter in good condition, sothat its occurrence in the colonies where it is liberated is by no meansas uniform as that of Anastatus, Apanteles lacteicolor Vier. (fig. 3) is a small hymenopterous parasitewhich deposits its eggs in the sm
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgypsymo, bookyear1915
