579 



white threads at the posterior end of the body ; is found on green- 

 house and garden plants. 



Remedy. See below. 



ORANGE MEALY BUG (Dactylopius citri). 



The female of this species is not unlike that of D. adonidum 

 in appearance, but has not the brown band on the middle of the 



back, but becomes completely 

 enveloped in a white mealy 

 exudation. This, like the other 

 species of mealy bugs, forms no 

 external scale covering, the 

 whitish mealy powder taking 

 its place. 



This mealy bug, like most 

 other species of mealy bugs, 

 has a very wide range of food 

 plants, and is a very serious 

 pest of the lemon and orange 

 trees, attacking both plant and 

 fruit. In Italy, at the present 

 time, it is one of the most serious 

 pests with which the citrus 

 fruit-growers have to contend 

 against, and causes a great 



Dactylopius citri. Female enlarged. (After amo U lit of damage to the orange 



crop in some districts of that 



country. This pest has become well established in this State, but 

 its spread has been arrested by the introduction of the ladybird 

 (Cryptoleamus montrou- 

 zieri) and another un- 

 named form from Spain. 



From the fact that 

 these mealy bugs have no 

 external scale covering, 

 and being soft bodied, 

 would lead one to believe 

 that they could be easily 

 destroyed, but such is not 

 the case, as they have 

 proven to successfully re- 

 sist the deathly effects of 

 the hydrocyanic gas fumes. A 



Remedies. Spray with n Front 



Nos. 7, 10, 14, or 15 (see 

 pp. 490-492). In the open it is not likely that any spraying in the 

 future will be necessary, but will in case of plants growing indoors, 

 for when the ladybirds are liberated indoors, they will at once fly to 



Dactylopins citri. 



back view. (After Berlese.) 



