78 DIASPIN^E I MALE. 



segment consisting chiefly of the long stylus (Fig. 

 12, /) or genital sheath, which carries the penis. 



The males of all the Diaspinae are remarkable for 

 their constancy of form; they offer no salient cha- 

 racters by. which they could be generically separated. 



SYNOPSIS OF GENERA. 



The characters of the British Diaspinae are given in 

 the synoptical table below. 



A. Puparium of the male coriaceous or horny, re- 

 sembling somewhat that of the female, more or less 

 circular or ovate ; larval exuviae central or subcentral. 



Puparium of female circular or subcircular, rarely 

 elongate ; exuviae superposed, central or sub- 

 central. Adult female with not more than five 

 groups of circumgenital glands. Dorsal tubular 

 spinnerets usually present. 



(i) . . . . Asi'imoiTs (1). 



Puparium of adult female consisting entirely of the 

 naked moulted skin (exuviae) of the second - 

 stage female. Larval exuvi:e wanting. Adult 

 female without grouped glands. Dorsal tuluilar 

 spinnerets wai 1 1 i n g. 



(n) .... GYMNASPIS (2). 



B. Puparium of the male closely felted; narrowly 

 elongate, with or without carinae ; usually white. 

 Larval exuviae at cephalic extremity. 



if. Dorsal tubular spinnerets in adult female irregular. 

 Puparium of adult female siibcirrnlar. Kxuviae, 

 always within the margin, are usually sub- 

 central. Male puparium trie arin ate. Adult 

 female with not more than five groups of cir- 

 cumgenital glands. 



(m) .... DIASPIS (5). 



Puparium of adult female elongate, or approximately 

 circular. Exuviae at margin or projecting be- 

 yond it. Male puparium non-carinated. Adult 



