. Circular. Insect pests; Insect pests. 8 THE ALFALFA ITio. 6.—Euphoroccra clnripennis, a parasite of the alfalfa caterpillar : Adult and enlarged antenna of same; puparium. Enlarged. (From Howard.) ever—were reared, while one specimen of Chalcis ovata Say (fig. 7) was reared from a pupa of Enrymiis. It seems from this that the hymenopteroiis parasites are mucli in evidence, al- though if the material had not been affected by the supposedly contagious disease many more might have been secured. The cotton hollworm tnistakerh for an alfalfa cater pillar.—A large green caterpillar k
. Circular. Insect pests; Insect pests. 8 THE ALFALFA ITio. 6.—Euphoroccra clnripennis, a parasite of the alfalfa caterpillar : Adult and enlarged antenna of same; puparium. Enlarged. (From Howard.) ever—were reared, while one specimen of Chalcis ovata Say (fig. 7) was reared from a pupa of Enrymiis. It seems from this that the hymenopteroiis parasites are mucli in evidence, al- though if the material had not been affected by the supposedly contagious disease many more might have been secured. The cotton hollworm tnistakerh for an alfalfa cater pillar.—A large green caterpillar known as the bollworm, Helio- this ohsoleta Fab. (fig. 8), that can be distinguished from the Eurymus be- cause it is of a lighter green color, about one- fourth larger, and hairy and rough in appearance rather than smooth, with three black lines traversing its body lengthwise, is quite prevalent in the Imperial Valle3\ and is often mistaken for the alfalfa caterpil- lar by many farmers. Mr. E. O. G. Kelly and Mr. T. H. Parks, agents of the Bureau of Entomology, working at Wel- ington, Kans., in the summer of 1909 also noted this species and reported it as being of a pre- daceous ; As noted in the valley, it was found to do very little damage to alfalfa, but to be a ravenous enemy of the alfalfa «This cauuibalistic habit has also been observed in Texas by Quaintance and Brues. Bui. 50, Bur. Ent., U. S. Dept. Agr., pp. 79-80, 1905. [Cir. 133]. 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, D. C. : The Bureau
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1904
