404 



INSECTS INJURIOUS TO THE ORANGE. 



of the Citrus family in Florida ; also on the fig, pomegranate, 

 gLiava, quince, Japan plum, red bay, oleander, and sweet bay, 

 and is very abundant on the gall-berry, Ilex glabra. It is re- 

 ferred to in W. H. Ashmead's '^Treatise on Orange Insects" 

 under the name of the white scale, Ceroplastes rusci Linn. 

 There are three broods during the year: the first appear in 

 April and May, the second from the middle to the end of 

 July, and the third during the first two weeks in September. 

 They increase with marvellous rapidity, but are preyed on 

 by a species of Chalcid fly and by other insect enemies. 



No. 259.— The Broad Scale. 



Lecanium hes))eridum Linn. 



Frr. 41fi. 



the twis: in Fis;. 416. 



Of all the bark-lice 

 here treated of, few are 

 so common, and none so 

 widely distributed, as 

 this species. It is found 

 in abundance from 

 Washington southward 

 to Florida, also in Utah 

 and California, on the 

 twigs of orange and 

 other trees, shrubs, and 

 plants ; but, having so 

 many different food- 

 plants, it is not so de- 

 structive to the orange 

 as are some others which 

 confine their attacks to 

 trees ofthe Citrus family. 

 The scale is brown, some- 

 tinies quite dark, and is 

 lepresented of its natu- 

 ral size on the stem of 

 It is one of the largest scales found 



