— zoo — 



Preparatory Stages of Callosamia angulifera, Walk. 

 Bv Wm. Beutenmueller. 



Egg — Ovoid, flattened above and below, while, shiny. Length 2 

 mm. width i mm. Laid July 2. Emerged July nth. 



Voting Larva. — Head dull black with a transverse white band a 

 litde before the middle. Labrum also white. Cervical shield black. 

 Body above and below wholly yellow, as are also the tubercles. As the 

 larva grows older a pale blackish transverse band begins to appear on the 

 junction of each segment. Length 3 mm. Duration of this stage six 

 days. 



After first moult. — Same as the preceeding stage, except the band 

 on the first segment deep black, and the lateral row of tubercles above 

 the spiracles sometimes black. Length 6 mm. Duration of this stage 

 seven days. 



A/tt:r second moult. — The head is now pale green with two black 

 transverse bands and the body pale whitish green with the dorsal tuber- 

 celes and the ones below the spiracles \ellow. The tubercles above the 

 spiracles black. The four tubercles on the second and third segments 

 pale orange and much larger than the rest. The transverse band on the 

 segments are now scarcely visible, except along the dorsum they are deep 

 black. Underside semitranslucent, whitisli. Length 14 mm. Dura- 

 tion of this stage four days. 



After third moult. — The tubercles on the second and third seg- 

 ments are now coral red and the one on the eleventh segment yellow. 

 All the remaining tubercles are reduced to piliferous spots. Length 22 

 mm. Duration of this stage seven da3'S. 



After fourth moult. — Little difference from the preceeding mnult 

 except that the tubercles are a little more prominent and having along 

 the sides below spiracles a pale yellow stripe beginning at the third seg- 

 ment and runnmg to the posterior extremity of the body. 



Length 35 mm. Duration of this stage five days. 



After fifth, the last moult. — No difference from the preceeding moult. 

 Length 60 mm. Duration of this stage six days. 



Food Plants. Tulip-Tree, {Liriodendron tulipifera. ) Wild Cherry 

 iPrunus 5(?ro/wa) and Sassafras {S. officinale.) 



This larva closely resembles that of Callosamia promethea. But 

 may be readily distinguished by the yellow lateral stripe and the less 

 prominent tubercles on the second and third segments and also by the 

 smaller piliferous spots which in some individuals are quite obsolete. 

 The larva is also much stouter and larger than promethea. 



The cocoon can onl\' be separated from P. promethea \>\ its larger 

 size. Length 43 mm, width 20 mm. 



