402 



INSECTS INJURIOUS TO THE ORANGE. 



Fig. 413. 



No. 257. — The Barnacle Scale. 



Ceroplastes cirripediformis Coinstock. 



The color of this scale varies from grayish to light brown, 



divided by lines into regular 

 segments, as shown at a in 

 Fig. 413, where one of these 

 scales is represented magni- 

 fied. The enclosed insect is 

 subglobular in form, and of 

 a dark reddish-brown color. 



The eggs are light reddish 

 brown, and rather long and 

 slender ; the larva is dark 

 brown, and very slender in 

 form. It is at first active 

 for a brief period, then settles 

 in one spot, where it becomes 

 stationary, and soon secretes 

 over its body tufts of cottony 

 filaments, which are finally 

 condensed to a waxy con- 

 sistence, forming part of the 

 scale with which the insect is 

 covered. 



This scale is found in sev- 

 eral localities in Florida on 

 both orange and quince trees ; 

 it is also found on a native plant, a species of Eupatorium. 



No. 258. — The Florida Ceroplastes. 

 Ceroplastes Floridensis Com stock. 

 This scale is at first white ; afterwards it becomes pink- 

 ish, growing redder or brownish in the middle, dull white 

 towards the edges, some specimens being irregularly mottled 

 with brownish and yellowish white, the top ornamented with 



