INSECT NOTES. 29 



Typhlocyha comes (Grape leaf hopper). 



This bug is reported from Calais, Maine, as being very de- 

 structive to the Virginia creeper, infesting almost all the vines 

 of that section. The correspondent states that it has been 

 prevalent there for a number of years and while the plant is 

 not absolutely destroyed the growth is much checked, and the 

 leaves become spotted, wither and fall. 



The eggs are stuck to the lower surface of the leaves in June; 

 from June to September the immature form, the nymph, a light 

 yellowish green bug with yellow side stripes, works upon the 

 leaves. The adults, about ^ inch in length, marked with yel- 

 low and red, beginning to appear in August, continue the work 

 of destruction begun by the nymphs. Spraying in July with 

 whale oil soap solution and the use of sticky screens have been 

 recommended for the pest in vineyards. (Lot 790.) 



Psylla floccosa Patch (Downy Psyllid of Alder). 



Very common upon the Alder {Abius iiicaiia) from early 

 spring to late June, are fluily. woolly masses, abundant on the 

 under side of leaves. Fig. ly represents such a characteristic 

 mass. If the white fluff is removed, little yellow and green 

 crab shaped objects are found beneath the protective mass which 

 is secreted by wax glands similar in function to those of cer- 

 tain woolly plant lice and scale insects. About the last of June 

 these insects acquire wings and shaking themselves free from 

 the white secretion, take to flight. This species was described 

 and figured in Canadian Entomologist, September, 1909. (Lots 

 727' 735- 740. 744-) 



Aphididae. 



Plant lice found a favorable season and many species were 

 noticed in the vicinity of Orono. Attention, however, was con- 

 centrated for the most i)art on those species of the Genus 

 Cheniics causing abnormal growths on spruce. Six species 

 were studied, namely. Chcrjiics piiiifoUac Fitch. Clicniics abicfis 

 Linn, Chcniics siinilis (ullctte. Clwnncs flocciis Patch. Chcniics 

 coitsolidatiis Patch, and i'licruirs lariciatiis i'atch. The three 

 new species were very briefly tlescribctl in Psyche for Decem- 



