THE CANADIAN ENTOMOLOGIST. 173 



NOTES ON SOME SAWFLY LARV^, ESPECIALLY THE 



XYELID/E. 



BY HARRISON G. DYAR, PH. D., WASHINGTON, D. C. 



INIacrgphya flavicox^, Nott. 



Head light brown, almost orange on the vertex, a little dot at 

 occiput, eye in a black spot; width, 1.8 mm. Body greenish white, 

 not shining, a dusky black dorsal stripe and a very distinct velvet- 

 black lateral one, broken into two square patches situated on the third 

 and fifth annulets, connected by smoky shadings. The spots are broken 

 up posteriorly and absent on joint 13. Dorsal band greenish black. 

 Segments neatly annulate, feet on joints 6-12 and 13; anal plates 

 immaculate. Towards the end of the stage the segments are faintly 

 orange banded in the middle (on 'second and third annulets), the anal 

 flap broadly orange. 



Ultimate stage. — Head brownish with blackish apical shade, eye 

 black. Body shining greenish waxen, no marks except the orange bands 

 which persist rather distinctly, covering four annulets, apparently first, 

 second, third and seventh, the segments 7-annulate, marked a little with 

 tar-brown in the folds. Single brooded ; found on the red-berried elder 

 ( Sambucus racemosa) at Jefferson Highlands, N. H., towards the end of 

 July, resting curled on the back of the leaf. The larvaj pass the winter 

 in cells in the earth. One ^ specimen was bred, which was submitted 

 to Mr. MacGillivray, who labelled it with doubt, " n. sp., ntSiX Jiavicoxce." 

 I prefer not to consider it distinct for the present. The specimen is in 

 the U. S. National Museum, marked " 6 L." 



Macrophya externa, Say. 



Stage III. (?) — Head pale testaceous, a little darker on the vertex, 

 a large black spot covering the eye ; width, .9 mm. Body tapering 

 posteriorly, finely annulate, translucent white ; no marks, the dorsum 

 appearing green from the food. Thoracic feet colourless ; abdominal 

 ones on joints 6-12 and 13. 



Stage IV. — Head whitish, eye black, a dark shaded spot on the 

 vertex; width, 1.2 mm. Thorax enlarged ; body white, finely 7-annulate, 

 the dorsum green from food. 



Stage V. — Head whitish, eye in a large black spot, a large smoky 

 black patch on vertex; width, r.6 mm. Body rather opaque white, 

 neatly 7-annulate, the food green ; no marks. The larva curls with the 

 tail raised over the back. Sits on the under side of the leaf. 



