LIFE HISTORIES OF SOME NORTH AMERICAN MOTHS. 



By Harrison G. Dyar, Pii. D., 



Custodian, Section of Lepidoplera. 



The following early stages of some North American Lepidoptera 

 have l)een recently observed. With a few exceptions the full life his 

 tor}^ of each is given. 



CAUTETHIA GROTEI Henry Edwards. 



£'(/g. — Slightlj^ elliptical, well rounded, not flattened, resting on 

 ■the leaf only narrowly; shining bright green, minutely shagreened, 

 })ut also with obscure, linear, rather small reticulations. Size 1.2 by 

 1.1 by 0.9 mm. Laid singly on the back of leaf. 



/Stage I. — Head rounded, clypeus reaching to the middle of the 

 front; pale ochraceous greenish, mouth darker; not shining; width 

 0.5 mm. Body cylindrical, normal, joint 12 squarish with a long 

 (1.5 mm.) erect horn, bearing setse i on the vertex and finely setose. 

 Segments finely, weakly 8-annulate, shining, punctate with pale dots. 

 Translucent yellowish, green from the food. Horn brown-black, 

 stained with red around the base. Tubercle i is on the third annulet, 

 ii on the sixth, iii on the fourth, iv a little posteriorly, on the 

 fourth, substigmatically, v very anterior on the first annulet and 

 higher than tubercle iv; two set^ on the leg shield. Setffi fine, stiff, 

 straight, not swollen, i to iii dark brown, iv and v pale. Shields and 

 plates concolorous, uncornified. 



Stage II. — Head round, soft green, ocelli black; width 0.8 mm. 

 Body same soft green, covered with fine, secondar3% pale granules; 

 o])scurely 8-annulate. A faint, pale, subdorsal line. Horn long-, 

 brown-black, setose, stained with red around the base, this color run- 

 ning a little up the dorsal line. Bod}^ pilose; feet pale, thoracic feet 

 reddish at tips. 



Stage III. — Head squarish, rounded, clypeus broad, not reaching 

 the middle of the front; soft green with secondary white granules; 



Proceedings U. S. National Museum, Vol. XXIII— No. 1209. 



255 



