Report on the gipsy moth work in New England . ugh to destroy it. The Apan-teles larva then makes its wayfrom the body of the caterpillar,forms a cocoon (PL III, fig. 1),and early in June the adult para-site emerges. This is the time ofyear when small caterpillars of the gipsy moth are feeding, and theparasites attack these caterpillars and pass through one generationwith the gipsy moth as a host. Another species which attacks both the gipsy and brown-tailmoth caterpillars is a parasitic fly known as Compsilura concinnataMeig. (PL III, fig. 2). This insect is about the size of the housefly, al
Report on the gipsy moth work in New England . ugh to destroy it. The Apan-teles larva then makes its wayfrom the body of the caterpillar,forms a cocoon (PL III, fig. 1),and early in June the adult para-site emerges. This is the time ofyear when small caterpillars of the gipsy moth are feeding, and theparasites attack these caterpillars and pass through one generationwith the gipsy moth as a host. Another species which attacks both the gipsy and brown-tailmoth caterpillars is a parasitic fly known as Compsilura concinnataMeig. (PL III, fig. 2). This insect is about the size of the housefly, although its habits are strictly those of a caterpillar in the spring the female fly deposits a small maggot in thebody of the larva of the brown-tail moth which feeds inside thebody of the caterpillar and becomes full-grown early in June. Atthis time the maggot burrows through the epidermis of the hostand forms a puparium from which, in about a week, the adult flyemerges. This brood attacks the gipsy-moth caterpillars, the adult. Fig. 3.—Apanteles lacteicolor: Adult female and co-coon. Much enlarged. (Original.) GIPSY MOTH WORK IN NEW ENGLAND. 7 flies emerging early in July. One or more broods may followbefore cold weather in case native larvae are at hand to serve ashosts. A species of Apanteles (A. melanoscelis Ratz.), which was receivedin small numbers from Italy in the summer of 1912, was liberatednear the laboratory at Melrose Highlands, Mass. It is double-brooded,both generations being passed on. gipsy-moth caterpillars. Thisspecies has maintained itself since its introduction and promises tobe a most valuable addition to the enemies of the gipsy moth. Ithas not been imported or recovered in sufficient numbers from thecolony liberated in this country so that other colonies could beestablished, but is considered a very valuable species. The Calosoma beetle (C. sycophanta L.) (PL IV), while not strictlya parasite, is at the present time doing more effective
Size: 1472px × 1697px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectgypsymo, bookyear1915
