. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CODLIjSTG moth IN" CEI^TEAL APPALACHIAIT KEGION. 47 A dipterous parasite, reared from codling-moth larv^ at Keyser in 1911, was determined by Mr. W. R. Walton, of the Bureau of Ento- mology, as {HyiJostena) TacMnopJiyfo variabilis Coq. (PL I, fig. 3). Only a few specimens of this species were obtained. HAIRWORM PARASITES.^ Hairworm parasites of the codling moth (PL I, figs. 5, 6) were found at Greenwood, Keyser, and French Creek, being abundant in the seeond-brood larvae at the latter place in 1911. These parasite
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. CODLIjSTG moth IN" CEI^TEAL APPALACHIAIT KEGION. 47 A dipterous parasite, reared from codling-moth larv^ at Keyser in 1911, was determined by Mr. W. R. Walton, of the Bureau of Ento- mology, as {HyiJostena) TacMnopJiyfo variabilis Coq. (PL I, fig. 3). Only a few specimens of this species were obtained. HAIRWORM PARASITES.^ Hairworm parasites of the codling moth (PL I, figs. 5, 6) were found at Greenwood, Keyser, and French Creek, being abundant in the seeond-brood larvae at the latter place in 1911. These parasites were within the bodies of the codhng-moth larvae at the time collections. Fig. 23.—ItoplecUs marginalits, a, paiasite of the codling moth. Enlarged. (Original.) were made from the bands and usually issued from their hosts 10 days oi' 2 weeks after the larvae were placed in the rearing jars. Occasionally dead lai-vsc, surrounded by a mass of dead hairworms, were found under the bands, and in a few cases the hairworms were found within apples boiTic by the banded trees. It was evident that infestation occurred at an early stage in the larval development and that all infested indi- viduals died as full-grown lai-vae. Most of the parasitized larvae died witliin 10 days aflc^r b(!iiig placed in tlic rearing jars. Tho hairworms were from 2^ to 5 inches in longtli, and three or four wero frequently observed to inliabit one larva. In leaving tho host they pa-ssed througli tho anal opening or })roko through tho » ifermU sp. Material was referred to Dr. B. H. Ransom, of tho Biaroau of Animal Industry, hut as Iho »|)ccimens wore all immature, thoy eoul<l not lio (lot«!rmin(;d . Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept.
Size: 1733px × 1442px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
