INSECTS INJURIOUS TO THE ORANGE. 



393 



and resemble No. 250, as shown at h, Fig. 401. Thej 

 are active for a brief period, and then settle permanently in 



Fig. 403. 



one spot, where they remain stationary. The male insect is 

 a very minute fly, which is shown, highly magnified, in Fig. 

 404. It has long antennae and two transparent wings. 



This species is found on trees of the Citrus family 

 throughout Florida, also in Louisiana, infesting the twigs 

 and branches, and finally the leaves, but rarely the trunks 

 There are three broods in a season. It is said to have been 

 imported from China, and has since been disseminated by 

 the distribution of infested nursery stock and by the fruit 

 itself. 



This insect also has some s])ecial parasites; one, a tiny 

 four-winged fly, Aphelinus aspidioticola Ashmead, is about 

 one-fiftieth of an inch long, of a light-brownish color, with 



