262 THE CANADIAN ENTOMOLOGIST. 



THE LARVA OF EUPITHECIA INFERRUPTOFASCIATA, 



PACKARD. 



BY JAMES FLETCHER AND ARTHUR GIBSON, CENTRAL EXPERIMENTAL 



FARM, OTTAWA. 



On May 19, 1904, Mr. W. Metcalfe found some green Geometrid 

 larvfe, at Hull, Que., feeding on the common Juniper {/uniperus communis, 

 L. ). These were handed to the writers, who succeeded in bringing them to 

 maturity. Three of the bred moths were sent to the Rev. G. VV. Taylor, 

 of Welling'on, B C, tor identification. Writing under date of Nov. 26, 

 Mr. Taylor says : 



" I return two of the three bred spscimens o{ Eupithecia sent me for 

 study. They are undoubtedly E. interruptofasciata, Packard, which is 

 not the same as E. miseruiata, Grote. I have specimens of the latter 

 from Pennsylvania which accord exactly with Grote's description, and the 

 differences between these and yours are evident at once. 



"^. miserulata has not a black band on second segment of abdomen. 

 It has a small linear discal dot on fore wings. The outer margin of fore- 

 wings is very straight. It flies in April and May. 



"^. interrtiptofasciata has a conspicuous black band on second seg- 

 ment of abdomen. It has a large round discal spot on fore wings. The 

 outer margin of fore wings is rounded and full. It flies in August and 

 September. 



"The first two points in each case are taken from the original descrip- 

 tions, the two others from my own observations of my specimens. All 

 the eastern Eupithecias (of which there may be 9 or 10 kinds), are lumped 

 in most cases under the one name miserulata. It is the only species I 

 have ever had offered to me in exchange." 



In Packard's Insects Injurious to Forest and Shade Trees (5th 

 Report U. S, Entomological Commission), there are no fewer than five 

 descriptions of the larva of E. miserulata. These descriptions vary 

 noticeably, and it certainly looks as if at least two distinctly different 

 larvre have been described under this name. 



The following is a description of the larvae found at Hull, Que.: — 



Length, 16 mm., dark green, almost the same colour as the older 

 leaves of the food-plant. Head paler than the body, and much smaller 

 than segment 2. Body cylindrical, but appearing as if flattened dorsally. 

 Dorsal vessel darker than body; subdorsal stripe whitish, rather indistinct; 

 sligmatal band whitish, margined above with yellow, particularly at centre 



July, 1905. 



