. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 62 MASS. EXPERIMENT STATION BULLETIN 353 Dichelonyx spp. Although this group of beetles is not considered to be important, they often appear in numbers on the foliage of various broad-leaved deciduous trees and some occur on needle-bearing evergreens, usually in the first half of the growing season. Dichelonyx elongata Fab. is a common species with feeding habits and injury to foliage similar to those of the rose chafer, Macrodactylus subspinosus Fab., and has been reported on numerous species of hardwood
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 62 MASS. EXPERIMENT STATION BULLETIN 353 Dichelonyx spp. Although this group of beetles is not considered to be important, they often appear in numbers on the foliage of various broad-leaved deciduous trees and some occur on needle-bearing evergreens, usually in the first half of the growing season. Dichelonyx elongata Fab. is a common species with feeding habits and injury to foliage similar to those of the rose chafer, Macrodactylus subspinosus Fab., and has been reported on numerous species of hardwoods. Other species are D. elongata Schonh., on birch and alder; D. albicollis Burm., mostly on pine; D. diluta Fall., and Lee, mostly on oak; and D. subvittata Lee, on hazel- nut and oak. Description. The beetles vary from about ^4 to }/2 inch in length and are oblong in shape with straight sides. The general color varies from a dull brownish-yellow to a dark brown but the wing covers usually exhibit a greenish or bronze luster. The legs are mostly brown and fairly long. The mature grubs resemble those of June beetles but are smaller and differ in many characters which can be distinguished only by microscopic exam- ination. If control measures should be necessary, a spray consisting of 4 pounds of lead arsenate in 100 gallons of water with 2 pounds of flour or 1 pound of calcium caseinate as a sticking agent should give A Dichelonyx Beetle. Enlarged. Blatchley, W. S. Coleoptera or Beetles (Exclusive of the Rhynchophora) known to occur in Indiana, pp. 951-953. 1910. Britton, W. E. Conn. State Ent. Rpt. 28:680. 1929. Britten, W. E. Conn. State Ent. Rpt. 31:505. 1932. Doane, R. W., Van Dyke, E. C, Chamberlin, W. J., and Burke, H. E. Forest Insects. pp. 233-234. 1936. Felt, E. P. N. Y. State Mus. Mem. 8(2):694, 703,716,723. 1906. Gibson, A. Can. Dept. Agr. Bui. 99, N. S.: 36. 1934. Packard, A. S. Fifth Rpt. Ent. Comm. pp. 328,511,599, 636, 801. 1890. Imported W
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