. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 38 PEELIMIXARY REPORT OX ALFALFA WEEVIL. OTHER PARASITES. The following three parasites came mainly in the last two shipments from Italy. The adult of one species (Canidiella curculionis Thorns.) (fig. 25) oviposits in the larvae of the alfalfa weevil in different stages of development, but the offspring therefrom emerge from the cocoon spun by the weevil, the cocoons of the parasite always showing through the meshes of the cocoon of the weevil (see fig. 27). This species has two generations an- nually and hibern
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 38 PEELIMIXARY REPORT OX ALFALFA WEEVIL. OTHER PARASITES. The following three parasites came mainly in the last two shipments from Italy. The adult of one species (Canidiella curculionis Thorns.) (fig. 25) oviposits in the larvae of the alfalfa weevil in different stages of development, but the offspring therefrom emerge from the cocoon spun by the weevil, the cocoons of the parasite always showing through the meshes of the cocoon of the weevil (see fig. 27). This species has two generations an- nually and hibernates as cocooned larvae. The alfalfa stems from which the three species of parasites of this group were reared were also in- fested by Apion pisi Fab., and therefore some or all of the group may perhaps also parasitize this latter insect. Owing to its small size, however, as compared to the parasites, this seems rather unlikely. The two additional species reared with the preceding are not definitely determinable, but one is PJiygadeuon sp., and the other may prove to be Mesochorus nigripes Ratz. Of this latter spe- cies Mr. T. W. Wassiljew, a Russian entomologist, under date of Febru- ary 6, 191*1, wrote us:. 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. Bureau of Entomology. Washington : G. P. O.
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