ENTOMOLOGICAL SOCIETY. 



The Currant Aphis (Aphis ribis, L.) was the most destructive insect on currants 

 and gooseberries this season, many bushes being so much injured that they dropped their 

 leaves and the fruit was ruined. 'JZZ^Zl 



Fig. 57. 

 The Grapevine Leaf-hoppers (Erythroneura species) did much harm to Virginian 

 creepers and grapevines, but particularly to the former. These insects, like the grape- 

 vine, flea-beetle (Haltica chalybea, Illiger), seem to prefer the Virginian creeper to 

 the grape. This is sometimes very apparent where the creeper and wild grapevine are 

 trained together over arbours. 



Two more enemies of the Virginian creeper not often referred to as such, but which 

 both occurred in some numbers this season at Ottawa in the same arbour, were Saperda 

 puncticollis, Say, a beautiful longicorn, velvety black with golden yellow^ stripes down the 

 edges of the wing cases and with spots on the thorax. These emerged from the larger 

 living stems of Virginian creeper, while from younger stems many specimens of Psenocerus 

 supernotatus, Say, were reared. 



The Mourning Cloak Butterfly (Vanessa antiopa,~L.) and the Interrogation Butter- 

 fly (Grapta interrogationis, Fab) were destructively abundant on elms planted as shade 

 trees. The caterpillars of the former also stripped large branches on willow bushes. 



Boot Maggots in cabbages, radishes, turnips and onions were remarkably destruc- 

 tive right through the season. 



Two injurious insects which it was hoped had " run their course " and which for 

 the last year or two had not been nearly so abundant as in previous years, this year 

 again showed up in decidedly increased numbers. These were the imported Larch Saw 

 fly (Nematus erichsonii, Hartig) and the Cattle Horn fly (Hazmatohia serrata Rob-Desv). 

 For the Horn fly perhaps the most convenient remedy is 1 lb, of pine tar mixed with 

 10 lbs. lard. A small quantity of this ointment rubbed lightly along the back and 

 sides of cattle once a week during the fly season will have the effect of keeping flies 

 away and will also have a healing and soothing effect upon any sores due to rubbing 

 or licking. 



