. Bulletin der US-Landwirtschaft. Die Landwirtschaft. 26 BULLETIN 124, U, S. MINISTERIUM FÜR LANDWIRTSCHAFT. Die malachiid Käfer, sich Feist vittatus Sagen (Abb. 18), ist recht zahlreich in der Luzerne Felder von Arizona und war der Bär vermutet - ing einige Bezug auf Eurymus. Herr T. Scott Wilson fanden beide, Käfer und Larven füttern auf pupse der Luzerne Caterpillar. Er beobachtete so viel wie 20 Käfer auf Fütterung als viele Puppen in einem einzigen Tag. Dieser Käfer scheint entweder live oder toten Eurymus Larven und Puppen zu füttern und scheint nicht viel Auswahl, zwischen den beiden zu haben. Es greift ein Pup

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. Bulletin of the U.S. Department of Agriculture. Agriculture. 26 BULLETIN 124, U, S. DEPARTMENT OF AGRICULTURE.. The malachiid beetle, Collops vittatus Say (fig. 18), is rather numerous in the alfalfa fields of Arizona and was suspected of bear- ing some relation to Eurymus. Mr. T. Scott Wilson found both adults and larvae feeding upon pupse of the alfalfa caterpillar. He observed as many as 20 beetles feeding upon as many pupae in a single day. This beetle seems to feed upon either live or dead Eurymus larvae and pupae and does not appear to have much choice between the two. It attacks a pupa or larva and, piercing it, sucks the juices that exude. In this way a hole is gradually made in the host, which, of course, is killed. Being small, the beetle does not consume much of its prey, but wanders off, and the next time it is hungry it attacks a new pupa or larva and thus kills many. Larvae were taken in the act of feeding upon Eurymus pupse, placed in vials, and reared to adult Collops. Two species of ants, Pogonomyrmex harbatus Smith and Cre- mastogaster Uneolata Icevius- cula var. clara Mayr (?) were observed to attack Eurymus larvae and kill them. Several species of robber flies have been observed to catch the adult butterflies and feed upon them. The writer took Prod acanthus milbei'tii Macq. with a butterfly in its claws, and Mr. H. E. Smith, at Koehler, N. Mex., observed the butterflies being carried off by Stenopogon pictico7''nis Loew (fig. 19). A FUNGOUS ENEMY. Fig. 18.—Collops vittatus, a beetle that preys upon the alfalfa caterpillar. Greatly enlarged. (Original.). 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 work.. United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.

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• bookcentury1900
• bookdecade1910
• booksubjectagriculture
• bookyear