862 EXPERIMENT STATION RECORD. 



onion thrips, destructive pea louse, 2rijor]if<>i(s dentieoIUf<, Ilarjxilus 

 caliginosus, and Saperda vestita. 



JVotes from California^ C. W. Woodworth (pp. 90-9-i). — Notes on 

 Lecanlum olece, the San Jose scale, codling- moth, peach-twig borer, 

 phj^lloxera, and TypJdocyba comes. 



Notes from Canada, J. Fletcher (pp. 9i-96). — A brief account of 

 Caccecla rosaceanct and some of the common insect enemies of roots, 

 vegetables, cereals, forage plants, trees, and shrubs. 



First report on insect pests for 1899, F. V. Theobald {Jonr. 

 Southeast Agr. Col. Wye, 1900, No. 9, j^P- '^1-^8, figs. ^J).— The 

 author discusses the habits, life histor^^, and remedial measures against 

 the asparagus beetles (6VvVxY/'^'6'rt-s^x^r(:^(// and C. lH-punctata). Among 

 the natural enemies of the first species the author mentions ladybirds, 

 lace-wing flies, and An thocorls nemorurn . Hand picking of the larvee is 

 recommended in gardens which are badly infested with these insects. 

 Chickens and ducks also render valuable service in reducing the number 

 of the beetles. 



A species of thrips is reported as injurious to the scarlet runner 

 bean. Infested plants are readily discernible l)y the fact that the 

 lower petals become rapidly shriveled from the attacks of this insect. 

 A detailed description is given of the species, and brief notes on its 

 life history. For combating this species, and also Thrips pislvmxi., 

 the author recommends the destruction of all bark and rubbish under 

 which the insects might hide and the use of such insecticides as pyr- 

 ethrum and tobacco. 



The author worked out anew the complete life history of the hop 

 aphis {Phorodon humull). The eggs of this species are found in win- 

 ter on prune trees, and from these eggs viviparous wingless females 

 are hatched, of which there were 3 generations. During June winged 

 viviparous females were produced, some of which migrated to hops. 

 In the fall female and male migrants returned to the prune trees, 

 where the insect hibernated in the ^^g stage. The author believes 

 that the cultivation of prunes and plums in the neighborhood of 

 hop gardens is partly responsible for unusual outbreaks of the hop 

 louse. Brief notes are also given on 2£dolontha culgaris as an enemy 

 of the hop. The burdock moth {Gortyna flavago) is reported as hav- 

 ing caused consideral)le damage to tomatoes. Tlie larvje of this insect 

 enters the stems of various other plants beside the tomato and burrows 

 upward in the central pith. The recorded food plants of the species 

 are ragwort, burdock, dock, and thistles. The author presents brief 

 notes on the considerable luimber of injurious insects, among which 

 mention may be made of flea-beetles on ca])bago and other garden veg- 

 etables, applc-T)lossom weevils, Avlieat midge, and pear midge. 



The Hessian fly in 1899 and 1900, F. M. Webster {Ohio Sta. 

 Bid. 119^ p>p. 237-24-7).— The Hessian fly was unusually destructive to 



