402 



INSECTS INJURIOUS TO THE ORANGE. 



FIG. 413. 



No. 257. The Barnacle Scale. 



Ceroplastes cirripediformis Comstook. 



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 Comstock. 



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 



