IXSECTS Al FICCTI.NG I'AKK AM) WUOULA.VU TREES 5_:;9 



the niDtlis appcariiiu- in tlu: fore part of Xovcmher, some wiiitcrins^ in the 

 ])ui)a. Tliere are probabh- two or tliree broods thn^inu^ a season. 



Cecropia moth 



Si! ;///(! cicropia Linn. 



A large, pale green ( aterpillar about 4 inches long, ornamented with conspicuous 

 green, blue, yellow and re<l -tubercles, feeils on the foliage of a large number of trees and 

 shrubs. 



I lie lar\a of this insect is \er\' striking in a|j])earancc anel were it at 

 all abinnlant its voracious appetite would result in a great deal of injin-\-. 

 Ordinaril}- it is so ran- that no re|)ressi\e measures are necessary. The 

 giant moth shown at j)late 42, figure 2, is rather common, ami of interest 

 largely because of its immense size. This insect has been recorded on 

 about 50 plants representing some 20 genera, the more important of which 

 are the following: linden, maples, apple and pear, cherrw <-liii. birch, aldi'r. 

 willow and poplar. 



Large maple spanworm 

 Sabitlfldcs (raiisvcrsata l)ru. 



-A. large, slender-bodied spanworm about i 'I inches long and marked with dark 

 purple brown and reddish markings, occurs on maples in Jul v. 



This species is rather common and t)i)ical of a large class of span or 

 measuring worms, which may be instantly recognizetl by their peculiar 

 looping walk and their tt-ndency to remain motionless on twigs when dis- 

 covered. There are a great man\- species anil almost all are so shaped and 

 colored as to closely resemble the twigs on which they occtir. 



The larva of this species has the boily thickened behiml and ridgeil on 

 the sides. It is a dark ptirple l:)rown mixed with reddish and has a didl 

 reddish gra)' crescent-shaped spot on tlu- middle of the fourth al)dominal 

 segment, behind which is a pair of low kidnej-shaped tubercles, and a pair 

 of dorsal pointed black ones on the eighth alnlominal segment. The 

 parent insect is a yellowish tawny color with a dark brown oblitpic stripe 

 extending from the apex of the fore wings to the middle of the anal margin 

 of the hind winos. W'iin' spread about 2 inches. 



