REPORT OF THE STATE ENTOMOLOGIST IQl6 



147 



numerous larvae was placed at our disposal April 17, 1907. The 

 adults appear early in May. 



67a//. The gall is a uniform swelling of the hop stem about one cm 

 in diameter and ranging in length from 4 to 50 cm. The hollow 

 dark, blackened interior is inhabited by long, pale yellowish larvae. 



Fig. 22 Lasioptera humulicaulis, swollen hop stem, 

 the normal size being indicated at A (original) 



Larva. Length 4.25 mm, slender, pale orange. Head small, 

 antennae rather slender; breastbone slender, distinctly expanded 

 apically, bidentate with a small, median tooth; skin rather coarsely 

 shagreened; posterior extremity broadly rounded. 



