124 THE CANADIAN ENTOMOLOGIST. 



JV. qiiernaria has interested me greatly, and I have tried different 

 times to secure ova. In almost every instance when a female was obtained, 

 we had unfavourable weather, and although I carried the female to 

 extensive forests, I failed to secure fertile eggs. My efforts at New 

 Brighton, Pa., again proved futile with a female secured about middle of 

 May. On May 31st a belated female was found and secured to a branch 

 of a bush leaning against an Oak. The following morning several clusters 

 of eggs were found deposited on the bark of the tree, and these fortu- 

 nately proved fertile. 



I have invariably found newly-emerged specimens on or near Oak, 

 and this led me to offer it as the food. Wild Cherry also was provided as 

 an experiment, and the larvae fed on it, but seemed to prefer Oak, which was 

 used exclusively thereafter. 



In my opinion there is considerable uncertainty about the specific 

 standing of Macophora aipidaria, Grote. Several specimens, all males, 

 have been determined for local collectors as cupidaria. These are all 

 males of quernai'ia, which is an extremely variable species in coloration as 

 well as structure of the extradiscal line in secondaries. The late Dr. 

 Packard had one female of quernaria^ and besides the copy of Grote's 

 figure a poor male, which he presumed to be cupidaria, when treating these 

 species in his Monograph. On page 412 he speaks of cupidaria possibly 

 being the male of quernaria, which I think is correct. The figure of 

 cupidaria in the Monograph Plate XI, fig. 5, is poor, as the left and right 

 sides do not correspond at all. I have seen about 40 specimens in the 

 local collections, and will briefly state the differences of the sexes of 

 quernaria : Male : Coloration mostly dark ; in rare exceptions specimens 

 occur where the costal area, collar and front of thorax are white, corre- 

 sponding in this respect to the figure of cupidaria^ cited above. The 

 extradiscal line in secondaries is usually straight, in some specimens more 

 or less angulated in the median area. Female : very variable, coloration 

 usually light, corresponding with the figure oi quernaria, Plate XI, fig. 6, 

 in Packard's Monograph. Some specimens were noted which have the 

 thorax brown and scarcely any white maculation on the wings. The line 

 in secondaries is strongly angulated in the majority, in some specimens 

 intermediate betv/een these and the normally straight line of the male. 

 The transverse lines of the primaries do not vary much. In the dark 

 specimens of both sexes these lines are marked at the costa by irregular 

 patches. 



