B.C. EXTO.MOLOGICAL SOCIETY. 



as a type. Each species of plant, for the most part, has a different species of aphis 

 attaelUng it, but despite the varietal differences all are similar in structure, and for 

 the most part in habits also. They are soft-bodied creatures, slow-moving, usually 

 green, brown, or covered with a whitey, woolly excretion. All are sucUing-lnsects 

 and can be controlled by applications of soapy solutions, kerosene emulsion, or caustic 

 spra.v, the only requisite being necessary that each individual receive attention. 

 Black Leaf 40 has been found particularly effleaceous and easy to apply. 



T?iE T.vRNisHED rL.\NT-BDG (Li/fltis protensis) . 



The malformations of such plants as chrysanthemums, dahlias, and asters, pro- 

 ducing often a one-sided flower-development or sometimes a total " blighting " of the 

 flower-bud, are due in a great many cases to the attack on the bud by the above- 

 named insect. The adult is very active, about % inch long, and darts away rapidly 

 when approached ; brown in general colour, but frequently adopting a yellowish or 

 red tmge. The latest report on this insect (Cornell Bull. 346, June, 1914) records 

 the satisfactory control as " still an unsolved problem," Under garden conditions 

 sprays of nicotine or kerosene emulsion or dry applications of pyrethrum, sulphur, 

 or ashes will give relief. 



The Eose-leaf Hoppek. 



Frequenftj- on the under-snrfaees of rose-leaves a number of small white hopping 

 insects ma.v be observed. If the bush be disturbed these " hopjiers " will fly out in 

 great numbers. If careful watch be kept, it will be seen that each Insect is methodi- 

 cally absorbing the .iuices of the leaf with its sucker inserted into the tissues of the 

 plant. A peculiar white niottlish appearance shows on the upper surface of the 

 attacked leaves. When these conditions, are observed we are usually dealing with 

 the above insect. Control of this insect, again, is a difiicult matter, but careful 

 sprays of nicotine or kerosene emulsion applied in May, preferably eai'ly in the 

 morning, and especiall.v directed to the under-surfaces of the leaves, will assist 

 materially lu the control, 



vSpittle-insects ( Cercopidie ) , 



These Insects produce a peculiar saliva-like excretion on many plants in the 

 herbaceous border and on grass. Within this liqnid excretion a small yellow insect 

 will be seen. During the past few years this insect has been the cause of much 

 inquir.v. Applications of kerosene emulsion or a strong driving force of water from 

 a hose will destroy a number of these Insects. 



Lepidoptek.\ (Butterflies and Moths), 



The Oblique Banded Le.\f-koller (Archips rosaceana) (Tortricida;). 



The larval form of butterflies and moths are referred to in general terms as 

 caterpillars or " worms," and it Is onl.v in the larval form that they attract attention 

 of the gardener. We have several insects in the vicinity of Vancouver which yearly 

 cause damage by devouring the leaves and flowers of ornamentals. One of the most 

 important in this regard are the caterpillars of the above moth. They are familiar 

 to all amateur rose-gardeners and horticulturists. 



They are usually light green in colour, with an evidence of a darker colour of 

 green along the centre of the back ; head very dark brown, almost black. They may 

 be seen in the curl of some leaves, doing damage to both leaves and flowers by 

 devouring the tissues. When disturbed they wriggle rapidly backwards and drop 

 to the ground by means of a thread of silk. They quickly make a rose-garden look 

 unsightly and the destruction of the bloom causes great inconvenience. The food- 

 plants of this insect are very numerous, and from the number of egg-masses which 

 may be .seen by any one in this city (Vancouver, B.C.) on the trunks of maples, 

 mountain-ashes, apples, and several other boulevard trees, as well as on the veranda 

 woodwork, it is evident that it attacks more plants than actually have been observed 



