1921 ENTOMOLOGICAL SOCIETY. 71 



the city of Levis particularly some maples had their foliage badly infested;- con- 

 sequently, the leaves started to turn yellow and dried toy the middle of August. 

 Since 1918, as mentioned above, Vanessa antiopa L. and Hemerocampa leucostigma 

 Sm. & Ab., have gradually decreased in number; these two species are evidently in 

 a period of depression and, in all probability, will not be worth mentioning for a 

 few years to come. Forest tent caterpillars were so scarce that they hardly deserve 

 mention in a list of actually injurious pests. 



Vegetables. In our vegetable gardens, the most conspicuous insect was again 

 the cabbage butterfly (Pieris rapes, Linn.). This year, as usual, it was largely dis- 

 tributed and worked havoc till the end of September. Next in importance would 

 come the common cutworms (Agrotis, Euxoa sp.) which, in Portneuf county, sev- 

 ered a large number of cabbage and tobacco plants. During June we observed an 

 outbreak of flea-beetles, Epitrix cucumeris Harris; for a fortnight they could be 

 seen riddling the leaves of potatoes and tomatoes. Bordeaux mixture sprays 

 drove them away in quick style, and, after all, the damage was smaller than last 

 year. Cabbage and oni;on maggots (Phorbia brassicce Bouche, P. ceparum Mg.) 

 were reported at work in Quebec, Lotbiniere and Portneuf counties; onions were the 

 chief victims in most localities, but this could not be taken for a general outbreak, 

 as the occurrence was only local and scattered over widely separated areas. 



We may mention the return of an old offender, the old fashioned potato beetle, 

 at Lac-au-Sable, county of Portneuf, which rapidly defoliated the potato plants 

 during the last two weeks of June; this species, Macrobasis unicolor Kirby, was 

 nowhere else observed. In July around Quebec city we have noticed an abundance 

 of minute jumping insects belonging to the Thysanura group, which we identified 

 as being Smynthurus hortensis. They occured in large numbers at night on beans, 

 but the injury was only slight. Beans were chiefly attacked by garden slugs, which 

 seem to have greatly increased in number since three years. They have a marked 

 preference for moist and low soils. Due to their concentration in rather small 

 sections ten days were sufficient for them to destroy entire bean plots covered with 

 two week old plants. Two species, nearly equally represented, worked together, 

 Limax agrestis and L. campestris ; they also paid a visit later on to cabbages, turnips, 

 cauliflowers and green peas, injuring the foliage or the pods. Prom Richmond we 

 receive the information that wire-worms have seriously damaged the potato crop 

 tunnelling the tubers, which later, were more suspectible to rot. White grubs 

 were also observed to be numerous in many fields in Eastern Townships. For the 

 first time, the writer collected a celery caterpillar in Quebec city; there was just 

 one specimen. 



Fruit Trees; Early in spring, bud moths (Tmetocera ocellana D. & S.) 

 killed a large percentage of buds in neglected family orchards and others not pro- 

 tected toy sprays. The worst case was observed at Saint-Nicolas, six miles above 

 Quebec city, along the Saint-Lawrence river. As a logical consequence of this out- 

 break, the crop has been greatly reduced. Codling moths (Carpocupsa pomonella 

 Linn.) and apple maggots (RJiagoletis pomonella Walsh) were still numerous, though 

 showing a slight decrease over last year. The same may be said for apple aphis 

 (Aphis pom,i De G-.). We only had a few isolated cases of woolly aphis (Schizo- 

 neura lanigera Haus.) and none of a dangerous character. Among the late summer 

 caterpillars the red-humped (Scliizura concinna Sm. & Ab.) is the only one worth 

 mention. Generally speaking, insects caused, this year, much less damage to fruits 

 and fruit trees than fungous diseases. 



