. Circular. Insects. 7 quently mistaken for the parent of the aphides. Another very efficient enemy, the nine-spotted ladybird, is shown in figure 3,/!, g. One of the most abundant syrphus-fly enemies is illustrated by figure g h i j Fig. 3.—a, Adult of convergent ladybird (Hippodamia convergent); b, pupa of same; c, larva of same; adult of spotted ladybird {Megilla maculata); e, larva of same; /, adult of nine-spotted ladybird (Coccinella 9-notata); g, larva of same; h, adult of Scymnusterminatus; i, larva of same; j, pupa of same. All enlarged; size indicated by hair line at right (autho
. Circular. Insects. 7 quently mistaken for the parent of the aphides. Another very efficient enemy, the nine-spotted ladybird, is shown in figure 3,/!, g. One of the most abundant syrphus-fly enemies is illustrated by figure g h i j Fig. 3.—a, Adult of convergent ladybird (Hippodamia convergent); b, pupa of same; c, larva of same; adult of spotted ladybird {Megilla maculata); e, larva of same; /, adult of nine-spotted ladybird (Coccinella 9-notata); g, larva of same; h, adult of Scymnusterminatus; i, larva of same; j, pupa of same. All enlarged; size indicated by hair line at right (author's illustrations, f-j original). Of the natural enemies which have been enumerated, ladybirds are particularly valuable, owing principally to the fact that they are active at all seasons, especially at the outset of aphis attack. Parasites are most effective toward the end of the season, when they often reduce. 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, Govt. print. off.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
