64 EXPERIMENT STATION RECORD. 



Report on injurious insects and plant diseases in 1901, W. M. Schoyen 

 {Beretnimj om Shideinsekfer cxj Plantesygdomnie i lUOl. Christiana: Grondahl >S: Sons, 

 190'2, pp. 42, figs. 26). — During the season of 1901 an unusual amount of damage was 

 caused by various species of injurious insects upon different crops. The greatest 

 destruction of cereals was due to Hydrellia griseola, and to the common smuts and 

 rusts. Meadows and pastures were more or less seriously injured by Charseas grami- 

 nis, Adiinonia tanaceti, crane flies, and PhyUopertha horticola. Cabbages and related 

 cruciferous i)lants were considerably injured by attacks of MeUgethes a-neu.% PlnteUa 

 cnicifi'ranuii, Mamestra. brassicie, and Limax agrestis. (Ireat injury was caused to 

 apples by Argyresthia conjugella. This insect has caused the loss of a portion of the 

 apple croj) in Scandinavia for a number of years. Spraying experiments thus far 

 conducted have j)roved ineffective in controlling this species. Notes are also given 

 on Aporia cratiegi, Hyponomeuta variabilis, Eriocampa adumbrata, pear psylla, apple 

 aphis, currant sawfly, gooseberry fruit worm, Chnmatobla brumata, Monophudnus 

 bipunciatus, and various species of insects injurious to domesticated animals and to 

 food products and household furniture. 



Insect attacks in 1901, R. S. MacDougall ( Trans. Highland and Agr. Soc. Scot- 

 land, 5. ser., 14 (JH02), pp. 230-244). — During the season of 1901 the author reports 

 more or less serious damage done by a number of injurious insects. The pine beetle 

 {HyU'sinus pini perdu) is described in its various stages and notes are given on its 

 habits and life liistory. It was found that the egg stage extended over from 14 to 20 

 days, while the larval stage occupied about 8 weeks, and the pupal stage 2 weeks or 

 more. In preventing injuries from this insect it is recommended tliat diseased trees 

 be cut out and that fallen timber be removed. Good results are obtained by giving 

 attention to trap trees, to which the beetles may be lured and in which they may 

 subsequently be destroyed. The 2 chief insect enemies of this beetle are Clerus 

 forniicarius and Ehizophagus depressus. Notes are also given on another insect enemy 

 of the pine, Retinia resinella. Agrotis segetnm is reported as injurious to various root 

 crops. The remedies recommended against this insect are trapping the moths during 

 the summer months, hand picking the caterpillars, destruction of the caterpillars by 

 harrowing, and scattering soot or lime about the base of the garden plants. 



Notes are also given on Plutella cruciferariini, insects injurious to stored grain, 

 Hyponomeuta padell lis, and Anobium domesticum. 



Insect pests attacking truck crops, F. W. Mally ( Texa.'f Sta. Bui. 64, pp. 18) . — 

 In this bulletin a general account is given of the life history of the insects and of 

 insecticides which are especially applicable in controlling insect injuries to truck 

 crops in hotbeds, cold frames, and in the field. Special notes are given on the use 

 of bisulphid of i-arl>on, tobacco dust, kerosene enmlsion, whale-oil soap, Paris green, 

 arsenate of lead, the blast torch, bran mash, other poisoned baits, and Bordeaux 

 mixture. Directions are also given for protecting certain crops from insect pests. 

 These crops include cabbage, cauliflower, cucumbers, cantaloupes, watermelons, 

 onions, potatoes, tomatoes, and squashes. The insects which are most injurious to 

 these various crops in Texas are mentioned, with a brief description. Reconmienda- 

 tions are made concerning the selection of spraying apparatus for usfe in combating 

 these insects. 



The onion thrips, F. M. Webster [Proc. Columbus Hort. Sac, 16 {1901), Ko. 1, 

 pp. 74-80, pi. 1). — The insect is described and mention is made of the plants upon 

 which it usually feeds. Brief notes are given on its life history and natural enemies 

 which serve to some extent in holding it in check. It is recommended that grass 

 and weeds should be destroyed in the neighborhood of onion fields, so as to reduce 

 the available 1)reeding locations for this insect. 



An eight years' study of chinch bug outbreaks in Ohio, F. M. Webster 

 {Proc. Sac. Prom. Agr. Sci. 1901, pp. 47-57, figs. 9). — Brief descriptive notes explana- 

 tory of maps which show the distribution of chinch bugs for a period of 8 years in 

 the different counties of the State. 



