Bulletin . hecaterpillars are older they may be destroyed by insect powderor kerosene emulsion, although they are seldom so numerousbut that they can be checked by a little hand picking. In certain localities in the southern part of the state the roseeeetle or rose chafer* has been present in sufficient abund-ance to do considerable damage. This old and well-known peststill continues to be one of the most vexatious of insect ene-mies, against which satisfactory remedies are yet wanting. Theadult beetles appear early in summer about the time the wildroses come into blossom, and attack the leave
Bulletin . hecaterpillars are older they may be destroyed by insect powderor kerosene emulsion, although they are seldom so numerousbut that they can be checked by a little hand picking. In certain localities in the southern part of the state the roseeeetle or rose chafer* has been present in sufficient abund-ance to do considerable damage. This old and well-known peststill continues to be one of the most vexatious of insect ene-mies, against which satisfactory remedies are yet wanting. Theadult beetles appear early in summer about the time the wildroses come into blossom, and attack the leaves and flowers ofa great variety of plants; of cultivated fruits they are oftenexceedingly injurious to apples, pears, plums, peaches, raspber-ries, blackberries, grapes, and strawberries. The leaves of thelatter were seriously attacked during the summer of 1895, inthe vicinity of Durham. The life-history of this insect may be briefly summarized inthese words,—The female beetles deposit thirty or more eggs. Fig. 3. Rose chafer: a, larva; b, pupa; c, beetle—slightly magnified. [After Riley] an inch or so beneath the soil surface, preferring for this pur-pose, according to Dr. Rileys observation, low, open meadowland or cultivated fields, particularly where the soil is light andsandy. In two or three weeks the eggs hatch into grubs thatfeed upon the roots of grass, and possibly other plants, andbecome fully grown (tf) in autumn. As winter approaches they *Macrodactylus sitbspinosits. 15 go deeper into the soil, coming to the surface again in springand making for themselves rude, earthen cells in which theychange to the pupa state (//). Three or four weeks later theyagain change, and the perfect beetle comes forth. Thus thereis but one brood a year. The insect lives in the beetle stateabout a month. As already intimated this is a difficult pest to deal or dusting with pyrethrum or insect powder has beenfound to stupefy the beetles, temporarily, and this substancem
Size: 1913px × 1306px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthornewhamps, bookcentury1800, bookdecade1890, bookyear1895
