760 
JiHYNCHOTA. 
commonly by C. floridensis, Comst., on guava. The wax of C. ceriferus , 
Anders., has been used in India as medicine, etc. (Ind. Mus. Notes, II, 
No. 3.) 
The Diaspince are marked by the pygidium, a complex terminal 
segment with the anal orifice above and the genital orifice below, with 
Fig. 532— Chionaspis separata, Female and Puparium. 
(After Green .) 
wax glands grouped around both, and on the margin, a complicated 
series of spines and processes. The identification of species is rendered 
possible by the pygidium. 
The covering of the female consists of the first small exuvium (pel¬ 
licle), to which is added the second exuvium (pellicle) and in most cases 
a large felted scale (secretionary supplement) ; in the male there is the 
first pellicle and a felted scale. Our genera can be distinguished by the 
characters of these scales more or less clearly as follows 
Aspidiotus. 
Mytilaspis. 
Parlatoria. 
Aonidia. 
Dias pis. 
Chionaspis. 
Fiorinia. 
Male and female puparium similar, subcircular. 
Male and female puparium similar, elongate. 
Male and female puparium similar, broadly oval. 
Male and female puparium similar, subcircular. 
Female puparium composed of second pellicle, no 
secretionary supplement. 
Female puparium subcircular, male elongate. 
Female puparium elongate or pyriform. Male elongate, 
Female puparium with no secretionary supplement. 
Male elongate. 
