190» ENTOMOLOGICAL SOCIETY. 



^"^ ' ^' Mirnm^h 



the spread of the insect, with life history, remedies, etc., has lately been published by Dr. 

 C. H. Fernald, and Mr. A. H. Kirkland. 



23. The Fall Web-worm, Hyphautria textor, Harr. This insect is also a very general 

 feeder, and when the laivre are numerous, the basswood suffers almost equally as much as do 

 many other trees attacked by this well known pest. This insect, as its common name implies, 

 makes unsis^htly webs, at the tips of the branches, but as it occurs rather late in the season its 

 injury is not so serious as it would be if the caterpillars appeared earlier. When mature 

 the larva is rather over an inch in length and varies much in colour, some specimens being 

 pale yellowish, or greenish, others much darker almost a bluish black. An easy way of 

 dealing with this pest is to cut off the webs as soon as they are noticed and destroy the 

 contained caterpillars by crushing them under foot. 



24. The White-marked Tussock Moth, Hemerocampa Uucostiqm'i S & A. is one of the 

 best known enemies of shade trees. In Canada probably the tree which has suffered most 

 from the larva of this species is the horse-chestnut, but when the insect is abundant it attacks 

 basswood, as well as other trees. In Toronto for many years the species has been very destruo- 

 tive to shade trees. It can, however, be controlled easily by spraying with arsenical prisons, 

 and by tho collection of the conspicuous egg masses during the winter. The caterpillar is 



. about an uich and a quarter in length when full 

 ^'^ -^^ grown, with a chestnut red head, just behind 



Lr \rL.- ^^ '^■'■^^ which is a conspicuous coral red mark, and two 



-■i^-^^^^^^.v^^^tt small elevations of the same colour posteriorly. 

 .3.X., .,,.--^,« ti:rz^^0 On the back there are four white brusrh-like tuftp, 

 ^ ^ '^^^^ ^^^ ^^'^g black plumes near the head and one 



f ^ - ^ , ^^^ at the anal end. The bcdy also bears slender 



Fig. 15. Tussock Caterpillar. ? airs, and a wide black band down the centre of 



the back, and a still wider band not so black on 

 each side ; between these lands the colour is golden yellow, and the skin just below the spiracles 

 is also yellow. 



25. The Red Tussock Moth, also called the Old Tussock Moth, Notolophus antiquo, L. 

 Lu'va.e of this species in all stages of development have been found feeding on the foliage of 

 basswood, but while common the caterpillars never occur in sufficient numbers to do noticeable 

 injury. The larva of this Tussock Moths differs from that of the preceding species in being 

 much less gaily coloured and lacks the bright red head. It also has an additional pair of black 

 pencils arising from the sides of the second abdominal segment. 



26. The Polyphemus Emperor Moth, or American Silkworm Moth, Telea pulyplmmis, Cram. 

 The larva of this common Emperor Moth ha? been occasionally found en the basswood at 

 Ottawa. During the past season the writer found a single rgg of this species on a linden leaf, 

 and reared the larva to full growth. 



27. The Checkered Tussock Moth, Halisidota tessellaris, S. & A. At Ottawa the bass- 

 wood seems to be one of the favourite food plants of the caterpillars of this arctiid moth. 

 When beating the foliage for larvae, this species has been one of the commonest we 

 have collected, but the caterpillars have never been found in any great numbers, so the 

 damage has not been very serious. The full grown larva-is over an inch in length with a black 

 head, the body covered with hairs of a delicate buff- yellow colour, and bears four dorsal blackish 

 pencils, or conspicuous tufts, in front, tsvo pairs of shorter lateral \thite tu'ts, and a pair of 

 whitish tufts near the end of the body. 



