81 



Indies, and th ese have been referred to as the citrus white 

 fly, but there is some likelihood that a more careful study of 

 these insects will demonstrate that the West Indian white 

 fly is the same as a new species recently discovered in Florida, 

 and which is much less serious as a pest than Aleyrodes citri. 

 The new species referred to is Aleyrodes nubifera, Berger. 

 Specimens of white fly fairly common in Barbados have 

 recently been identified by the state entomologist of Florida 

 as Aleyrodes nubifera. Another species (A. howardi, 

 Quaintance) is also known to occur on citrus plants in the 

 West Indies, and it may be one of the species found in the 

 Lesser Antilles. 



White fly is attacked by the red-headed fungus, 

 Sphaerostilbe coccophila,) already mentioned, which occurs in 

 the West Indies and in Florida, and also by several species of 

 parasitic fungi. If it becomes necessary to spray for the 

 control of white fly, a whale-oil soap solution will be found 

 very effective. 



BARK BORERS (Leptostylus praemorsus). Coleoptera. 



Citrus trees are often attacked in the stem near the 

 ground, and wherever, in pruning, stubs have been left 

 which have decayed, by grubs which tunnel in the soft wood 

 underneath the bark. These grubs are the larvae of 

 long-horned bettles, one species of which has been identified 

 as Leptostylus praemorsus (Fig. 89). The grub is whitish, 

 with a small brown head, and very much flattened in appear- 

 ance. The beetle is brownish with long slender antennae. 



Fig. 80. Lime tree bark-borer. 

 About li times natural size. (Original.) 



