62 THE REPORT OF THE ' No. 19 



FURTHER NOTES ON THE COCCIDAE OF ONTARIO. 

 By Tennyson D. Jarvis, O.A. College, Guelph. 



In last year's Annual Report, I gave an account of forty-eight species 

 of Coccids for Ontario. Further collections and investigations have enabled 

 me to add the following to the list. 



Kermes gaRijormis (Riley), Red Oak, Toronto. 



Saissetia hemisphaericunh (Targ), Cotton, etc., Conservatories in most 

 parts of Ontario. 



Aspidiotus abietis (Schr.), Hemlock, Guelph. 



Chrysomphalus aonidum (Linn,), Ficus elastica. Conservator}', Guelph. 



Ischinaspis longirostris (Signoret), Palm, Conservatory, Toronto. 



Undetermined Species of Pseudococcus. 



On bark of Apple — Pyrus malus, Guelph. 



" " Hawthorn — Crataegus sp., Guelph. 



" " Uorsechestn'ut — Aesculus hippoc-^sfanum, Guelph. 



" " Beech — Fagus ferruginea, Guelph. 



*' " Willow — Salix sp., Guelph. 



" " Lombardy Poplar — Populus italica, Guelph. 

 On leaves of Soft Maple — Acer saccharinuTn, Guelph. 



" Willow— Salia; sp., Guelph. 

 On roots of Raspberries — Ruhus stri,gosus, Muskoka. 



" " Blueberries — Vaccinium Pennsylvanicum, Muskoka. 



" " (joldienTod—Solidago canadensis, Guelph. 



" " Yellow Avens — Geum strictum, Guelph. 



'■ " Yarrow — Achillea millefolium, Guelph. 



" " Wormwood — Artemisia sp., Guelph. 



" " Ox-eye Daisy — ChrysanthcTnuyn leucanthemum , Guelph. 



" " Dais;^ Fleabane — Erigeron philadelphicum, Guelph. 



Kermes galliformis (Riley). 



These scales occur either singly or in clusters on the twigs and branches 

 of Red Oak (Quercas rubra). The form of the adult female puparium is 

 globular with a slight incision for insertion on the stem of the food plant. 



It is nearly smooth and somewhat shining. The colour is white and . 

 beautifully variegated with yellowish, gray and black. Mr. A. Cosens 

 found this fairly common on Red Oak at Toronto. 



Saissetia hemisphaericum, (Targ.) 



The adult female varies from light to dark brown, frequently shaded 

 with darker brown to black. 



It is more or less hemispherical or slightly elongate and convex. The 

 surface is smooth and shining to the naked eye but with higher magnifica- 

 tion is seen to be thickly studded with little dots. The immature female is • 

 usually of a pale yellow with a well defined central and two lateral carinae. 

 It is a very common scale in conservatories throughout Ontario. 



Aspidiotus abietis (Schr.). 



Puparium of the female oval or elongate oval and the side next the ■ 

 midrib compressed and straight. About 1.5 — 2 mm. long and 1 — 1.2 mm. 

 wide. Colour dark brown; back convex. Exuviae central, dull yellow. 

 Common at Guelph on Hemlock (7'suga occidentalis). 



