. Bulletin of the Department of Agriculture. Agriculture. BULLETIN 221, U. S. DEPARTMENT OF AGRICULTURE. be found. However, in the pile of rubbish and dirt at the side of the gin which had been thrown from the dirt auger several fragments of dead beetles were found. The manager of this gin could not give any information regarding the occurrence of the beetles. He had noticed, however, some large brown cases which occurred rather numerously early in the fall, probably the pupal cases of the cotton leaf-worm (Alabama argillacea Hiibn.). CROPS DAMAGED. Corn is the only cultivated crop that h
. Bulletin of the Department of Agriculture. Agriculture. BULLETIN 221, U. S. DEPARTMENT OF AGRICULTURE. be found. However, in the pile of rubbish and dirt at the side of the gin which had been thrown from the dirt auger several fragments of dead beetles were found. The manager of this gin could not give any information regarding the occurrence of the beetles. He had noticed, however, some large brown cases which occurred rather numerously early in the fall, probably the pupal cases of the cotton leaf-worm (Alabama argillacea Hiibn.). CROPS DAMAGED. Corn is the only cultivated crop that has been known to be attacked in sufficient numbers to cause serious damage. The beetles, upon first emerging from hi- bernation in the early spring, attack very young cocklebur and early volunteer corn, the crop not having been planted at that time. Besides corn, the beetles have been ob- served by the writer to attack the young leaves and growing shoots of cocklebur, smartweed, Japan clover, and crab grass. Mr. Vickery has observed them feeding on sorghum and alfalfa —on the latter plant, however, only in rearing cages in the laboratory. Mr. W. R. McConnell has found them feeding: on sorghum in the field and also on Alopecurus geniculatus. Some of the agents of the branch of Southern Field Crop Insect Investigations have observed them feeding on the cotton plant. The ragged appearance of the corn plant (fig. 6) is indicative of their presence, especially the notched edges of the leaves, and where the beetles appear in sufficient numbers to devastate a field these notches become so numerous that the plant dies. (PI. II.) The early planting seems to be the one most seriously affected, although the second planting on the farm of a Mr. Baskins and on other farms near Paris, Ark., was about 50 per cent damaged in 1913, the. Fig. 6. -Young corn plant showing work of adult of the southern corn leaf-beetle. (Original.). Please note that these images are extracted from scanned page i
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