. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 37. Fi(i. 7.—i 'iiliinuiiia cctlidiiiii. <i larva; /(lu'i'tlc. Natural size (from Ri- ). larvfi (Ith Report IT. S. Ent. Coiniii., p. 107). This chalcidid is sliown in figure 8. Only one bird other than the English sparrow appears to have been observed attacking this insect. On this head Lvnian (0) said: "There appears to be no bird ])ut the blue jay that will eat ; The foregoing- is a short list of known natural ciKMnifs of so common an insect. Future observa- tions will doubtless show that the
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 37. Fi(i. 7.—i 'iiliinuiiia cctlidiiiii. <i larva; /(lu'i'tlc. Natural size (from Ri- ). larvfi (Ith Report IT. S. Ent. Coiniii., p. 107). This chalcidid is sliown in figure 8. Only one bird other than the English sparrow appears to have been observed attacking this insect. On this head Lvnian (0) said: "There appears to be no bird ])ut the blue jay that will eat ; The foregoing- is a short list of known natural ciKMnifs of so common an insect. Future observa- tions will doubtless show that there arc* many others such as we know attack the common army worm, among which are various predaceous ground lieetles and mites. Years of experience with the common army worm show the great efficiency of natural enemies in keeping down its num- bers, serious outbreaks seldom occurring two 3"ears in succession.^ The season of 1899, as previously noted, has shown that we can as yet place very little dependence on insect enemies against the fall army worm. :)Iat. mkasitres. The fall arm}' worm in its manner of life so nearly resembles, in many respects, the common army worm that, when it assumes the habit of traveling in armies, its ravages ma}" be counteracted by a similar line of treatment. The remedies in vogue against the latter A'^ere discussed in the Animal Report of this Department for 1879 (pp. 189, 190), and in Circular No. 1, second series, of this Division (pp. 8, 1). As with the common army worm also, unfortunately, injury by this species is seldom detected until too late for the successful applica- tion of remedial or preventive measures. THK ISK OF INSECTICIDES. Fig. 8.—Ein)lectruii atiiintuckii, mufh enla^rgod (reengraved after Com- J,j ^-J^g ^..^^^ ^^ ^^^.^^ armicS in extCUSive fields, plantations, or gardens, poisons are of little value at the time when outbreaks are at their height. When the armies are first noticed the larvte or "worms'&qu
Size: 1605px × 1556px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectentomology, booksubjectinsects, booky
