1899] 



ENTOMOLOGICAL SOCIETY, 



69 



Much annoyance was caused by the presence of a very small black flea-beetle (Epitrix 

 cucumeris) Fig. 21, on both the potato and the tomato plants. This beetle about 1-16 

 inch in length, is black with a whitish pubescence. This insect works upon the upper side 

 of the leaf and makes perforations. It is easily overcome with Paris Green. 



The Cucumber Beetle (Diabrotica vittata) Fig. 22, 

 was as usual a great nuisance on the cucumber, melon, 

 squash, and pumpkin vines. Many inquiries were made 

 as to the best mode of dealing with these beetles. The 

 remedy we found to be most effective was Paris Green 

 with considerable lime added, applied with a knap-sack 

 pump. The rod had an elbow so that the under sides of 

 the leaves were thoroughly sprayed. This year applica- 

 lg ' lg ' #' tions of Paris Green were made whenever new leaves 



appeared. 



The Squash Bug (Anasa tristis) Fig. 23, seemed to thrive this year in spite of every 

 precaution. Decoy crops are generally very valuable, but were quite ineffective in most 

 cases this year. Hand-picking of the leaves containing the clusters of eggs or nymphs 

 was found very effective. 



The Cabbage Worm (Pieris rapse) was very plentiful this season, and did much damage 

 to cabbage, turnip, and rape plants. In the case of cabbages the worms can be very 

 successfully treated either by Paris Green and lime spray, or by dusting the leaves with 

 insect powder, mixed with flower or ashes. 



The Cabbage Aphis (Aphis brassicse) did^not appear in such numbers as they did 

 last year, but the application of kerosene emulsion, diluted with 15 parts of water, to the 

 under side of the leaves will practically exterminate them. 



The grape-vine had its usual enemies, 

 but so far as my knowledge goes, the Flea- 

 beetle (Haltica Chalybea) Fig. 24, was not so 

 troublesome this year as usual, but it is still 

 considered a bad pest. The best method of 

 controlling it is, (1) to spray with Paris 

 Green the buds which are just opening, and 

 (2) again in June, when the larvae are active, 

 to spray with dilute kerosene. Many vine- 

 yardists go among the vines ana hand-pick 

 the beetles, or jar the beetles into a cloth 



Fig. 24, a. larvse on leaf, b. larvae, c. egg, Fig. 25, Grape-vine Thrips (the hair-lines show 



d. beetle (magnified). natural size). 



saturated with kerosene. 



The Thrips or Grape-Vine Leaf Hopper (Erythroneura vitis), Fig. 25, was perhaps 

 more injurious than the flea-beetle. It was especially troublesome to the Virginia Creeper 

 during late summer. If the nymphs which appear in June are then sprayed with dilute 

 Kerosene Emulsion, and an elbow used so that the spray will reach the underside of the 

 leaves, little harm need be expected for the remainder of tbe season. 



A new and somewhat alarming pest has arrived in the Niagara peninsula. Last 

 year Mr. Kilman noted the arrival of the Asparagus Beetle (Crioceris asparagi) at the 



