TRIBE ASPIDIOTINI 393 



hh. Pygidium with single pair of lobes 



Targionia Sign, 

 gg. Pygidium with densariae. 



h. Pygidium with two pairs of lobes. — Type, Aspidi- 



otus socotranus Lindgr Affirmaspis MacG. 



hh. Pygidium with single pair of lobes. — Type, Aspidi- 



otus campylanthi Lindgr Targionidea MacG. 



ee. Pygidium without lobes, margin sometimes with angular 

 projections or rounded protuberances but never with even 

 inconspicuous lobes. 

 f. Pygidium without parphyses or densariae. 



g. Pygidium with caudal margin entire, coarsely crenu- 

 late, or without projections of any sort, lateral mar- 

 gins strongly converging caudad, forming a right 

 angle. 



h. Pygidium with deep mesal and lateral indenta- 

 tions. — Type, Aspidiotus canaliculata Green. 



Circulaspis MacG. 



hh. Pygidium with indentations of normal depth, not 



with deep mesal and lateral indentations. — Type, 



Diaspis arizonica Ckll Rugaspidiotus MacG. 



gg. Pygidium with caudal margin with thirty or more 

 subquadrate, irregular, blunt, closely adjacent projec- 

 tions, lateral margins only slightly convergent 

 caudad, forming very wide obtuse angle. — Type, 

 Aspidiotus rhizophilus Newst. Obtusaspis MacG. 



ff. Pygidium with two or more pairs of paraphyses. 



g. Anus and vulva located near middle of pygidium and 



superimposed. — Type, Aspidiotus pimentae Newst 



Leonardianna MacG. 



gg. Anus located near middle of cephalic half of pygidium 



and cephalad of vulva. Froggattiella Leon. 



bb. Mesothorax and metathorax always separated by deep transverse 

 constriction. 



c. Pygidium of adult female always with genacerores. 

 d. Pygidium with dorsal aspect always without lattice-shaped 

 thickenings. 



e. Pygidium always without paraphyses. 



f. Pygidium with four or five groups of genacerores. — Type, 



Aspidiotus culculiginis Green Stringaspidiotus MacG. 



ff. Pygidium always with less than four groups of gena- 

 cerores. 

 g. Pygidium with three groups of genacerores; scale of 

 adult female capsulate, posterior margin elevated by 

 thickened ventral scale. — Type, Aspidiotus cistuloides 

 Green. Semelaspidus MacG. 



