. Bulletin of the Department of Agriculture. Agriculture; Agriculture. ..hi in 142 denced by its extremelj localized \ other woi ij> of parasites. Single females wen- placed in 3-ouncc tin sail which liatl been filled with soil and into which two or 11 PopiOia grabs had been placed fig - \b food for the 1 drop • •f honey or sugar water was placed on a leaf on tin- surface of tin- - These tins wen- then set asiae for a day and .-it tin- end of that ti. FlG. 24.— Tiphia popiUiarcra, femaie examined, the grubs bearing eggs being removed and firea sup- plied. Those Bearing eggs were transf
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. ..hi in 142 denced by its extremelj localized \ other woi ij> of parasites. Single females wen- placed in 3-ouncc tin sail which liatl been filled with soil and into which two or 11 PopiOia grabs had been placed fig - \b food for the 1 drop • •f honey or sugar water was placed on a leaf on tin- surface of tin- - These tins wen- then set asiae for a day and .-it tin- end of that ti. FlG. 24.— Tiphia popiUiarcra, femaie examined, the grubs bearing eggs being removed and firea sup- plied. Those Bearing eggs were transferred to cross-section ti which provided a single compartment for each grub, and in which been placed soil with a small piece of sod to provide food for the grub during the period elapsing before its death from the attack of the parasite larva. The method of handling grabs parasitized by Tiphia differs from that used with Scolia and Campsomeris. because the grubs are not permanently paralyzed as they are in the latter two genera. During the earlier periods of this work, the soil in the tra\ - - kept fairly moist: but it was found that this was responsible for a considerable mortality among the grubs by fungus attack, and con- sequently in the later work no moisture whatever was applied, and improved results were 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. : Supt. of Docs. , G. P. O.
Size: 1593px × 1569px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
