8 1 2 Journal of Agricultural Research vol. vi, No. 21 



the pupa 



When fully colored of a shining mahogany brown, and comparatively smooth. In 

 general appearance not unlike other noctuid pupae. Dorsum of thorax with notice- 

 able transverse wrinkles, the mesothorax with a more or less distinct smooth line 

 along the median dorsum. Bases of first four abdominal segments on dorsum and of 

 fifth, sixth, and seventh segments on venter rather indistinctly and sparsely punc- 

 tured; the fifth, sixth, and seventh segments with a ridge near the anterior border 

 on dorsum which reaches nearly to spiracles on each side, the posterior margin of this 



Fig. 2. — Posterior extremity of male and female pupa: a, Male; b, female. 



ridge being denticulate or deeply crenulate , the teeth directed caudad and most prom- 

 inent at median dorsum and gradually becoming less distinct laterally. The male 

 and female pupae are readily separated by a comparison of the accompanying illus- 

 trations (fig. 2). 



Measurements: Length 19.3 mm.; width at tip of wings of male 6.2 mm., of female 

 7.0 mm. Length of the two prominent robust spines at tip of body in male 0.55 mm., 

 in female 0.7 mm.; a more slender and more or less hooklike spine on each side of 

 the larger one is shorter. 



