578 



MEALY BUG (Dactylopius adonidum, Linnaeus). 



[jiving upon various green-house plants, and often noticed 

 on orange trees, ic is very troublesome at times to indoor plants. 

 The female, a small scale-like insect, more 

 or less covered with a whitish, mealy 

 powder, measures from one line and a 

 quarter to a line and a half in length ; is 

 of a whitish or yellowish colour, with a 

 brown band on the middle of the back, 

 and is covered with a mealy powder, 

 which is excreted through the pores 

 situated on the various parts of the body. 

 In addition to this there is a woolly 

 border around the edge of the body, 

 which is longest at the hind end of the 

 body. 



Remedy. See below. 



DESTRUCTIVE MEALY BUG (Dactylopius 

 destructor, Comstock) . 



This, like D. adonidum, is found in- 

 festing green-house plants. It is a very 

 destructive species to sugar cane in some 

 parts of the world. Scattered specimens 

 are frequently met with in gardens in 

 and around Perth. The female is a small 

 yellowish bug, thinly covered with a 

 mealy powder, nearly two lines in length. 



Remedy. See below. 



Eitl^^^S^ 



Long Thread Mealy Bug. 

 Greatly enlarged. 



LONG THREAD MEALY BUG (Dactylopius longifilis, Comstock). 



In general appearance the female of this species does not differ 

 much from D. destructor, only a little longer, and has four long 



Male of Dactylopius longifilis. 

 a. With wings folded. t. One wing expanded. 



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