210 



IOWA ACADEMY OF SCIENCES. 



had all been killed by frost, it is quite safe to say that they 

 hibernate and deposit eggs the next spricg, there probably 

 being but one brood each year. 



A nearly related species, determined at the Division of Ento- 

 mology, U. S. Department Agriculture, as Baris dolosa Casey, 

 was brt d in small numbers Irom the same stems. Is was thought 

 to be the same and differences in appearance due to imperfect 

 maturing, but there is a decided difference in form of thorax 

 and it seems probable that both species breed in the same plant 

 and with practically the same life history. 



DESCRIPTIONS. 



Larva: Fig. 11, a. The fully grown larva is about 5-32 in. 

 long and 1-16 in. diameter, and a yellowish-white color; head 

 light brown, mandibles reddish-brown; legs represented by 

 mammiform protuberances. The body tapers somewhat toward 

 posterior end, the last seginent usually showing four bristles. 



Fig. 11. B. confinis. a, larva, h, pupa. 



Papa: Fig. 11, b. About the same length as larva, but com- 

 paratively wider. Head (from beneath) fits closely to the body, 

 eyes not especially prominent; antennae wide in proportion to the 

 length, normally not projecting beyond the sides of the thorax, 

 club conspicuous, usually somewhat denser in appearance. 

 Snout reaches base of first pair of legs and shows small, 

 roundish portions at tip corresponding to the mouth-parts. 

 First and second pair of legs cluoQsy in appearance; joints of 

 the tarsi indicated, the last one distinctly curved; third pair of 

 legs hidden, only a slight portion being visible along the inner 

 margin of the hind wing-pads. Four abdominal segments visi- 

 ble for their entire width. The last segment usually has two 

 apical bristles and a group of small spiny processes. 



