﻿Sept. i895i Beuttenmuller. Early Stages OF Ennomos Alniaria. 13t 



DESCRIPTIONS OF THE PREPARATORY STAGES 

 OF ENNOMOS ALNIARIA {Li>w.). 



By Wm. Beutenmuller. 



£gg. — Oblong, flattened above and below, shining, smooth, olive 

 brown with a large white spot on the side which is truncate and where 

 the young larva escapes ; at the other end it is slightly rounded ; sides 

 almost parallel. Length i mm.; width .5 mm. Laid October 6, 1892, 

 in chain-like rows, one egg against the other; emerged April 7, 1893. 



Young Larva. — Length 3 mm. Head testaceous, body above dull 

 green ; below the spiracles and under side yellowish, translucent ; as 

 the larva grows older it is wholly pale green. Length 8 mm. Moulted 

 April 29th. 



After first moult. — Entirely pale green, without any visible mark- 

 ings whatever, smooth and somewhat shining. Length 13 mm. Moulted 

 May 6th. 



After second moult. — Green as in the previous stage; apparently 

 no change, except that the junctions of the segments are yellow, Length 

 16 mm. Moulted May 15th. 



After third moult. — Not much different from the last stage. The 

 body beneath is quite flattened and the lateral edge is ridged beneath 

 the spiracles. The head is also much flattened and projects forward. 

 Length 22 mm. Moulted May 24th. 



After fourth moult. Green; thoracic feet brownish, antennae 

 rather long, pinkish ; beyond the middle of the fifth segment is a trans- 

 verse fold or ridge, which is brown in some individuals and on the 

 eighth and eleventh are two small tubercles, the summits of which in 

 some individuals are brown. On each segment along the dorsum are 

 two minute piliferous spots, which are hardly visible without a lens. 

 On the eleventh and twelfth segments are a few short yellowish hairs. 

 The pair of abdominal legs on the ninth segment brown outside (no 

 other abdominal legs present). Anal legs pinkish at extremities. Be- 

 neath, there is a pair of tubercles on the sixth segment. The minute 

 tubercles are also present. Length 27 mm. Moulted June 4th. 



After fifth 7noult. — The fifth segment above is now much more 

 swollen into a transverse ridge and a corresponding one on the sixth 

 segment beneath, but which is not quite so prominent. The two first 

 pair of thoracic feet project forward and are pressed to the body, while 

 the last pair rest on the twig. On the eighth segment is also a trans- 



