392 THE COCCIDAE 



ff. Pygidium always with paraphyses. 



g. Pygidium with median incisura always present and 

 separating median pair of lobes. 



h. Pygidium with three or four pairs of lobes and 

 with two or more pairs of paraphyses. 

 i. Pygidium with four pairs of lobes and four or 

 more pairs of paraphyses. — Type, Aspidiotus 



lilacinus Ckll. Pelomphala MacG. 



ii. Pygidium usually with three pairs of lobes, 

 rarely with only two. 



j. Body with cephalic transverse constriction 

 bounding broad bluntly rounded head-like 



area. Mycctaspis Ckll. 



jj. Body with cephalic portion uniformly con- 

 vex, never transversely constricted forming 

 head-like area, 

 k. Pygidium with second pair of lobes deeply 

 incised; pectinae long and broad, truncate 

 at distal end. — Type, Aspidiotus cladii Mask. 

 ParaonidieUa MacG. 

 kk. Pygidium with second pair of lobes not 

 deeply incised; at most only notched; pec- 

 tinae or plates or both present, if pectinae, 

 not truncate at distal eni.--Aonidiella Leon, 

 hh. Pygidium with single pair of lobes and one or more 

 pairs of paraphyses. — Type, Aspidiotus ceratus 



Mask. Monaonidiella MacG. 



gg- Pygidium with median incisura obliterated by fusion 

 of median pair of lobes into single lobe, other lobes 

 obsolete; with two pairs of paraphyses. — Type, Aspid- 

 iotus extensa Mask Neolronai-dia MacG. 



dd. Pygidium of adult female always without pectinae or plates, 

 e. Pygidium always with at least one pair of lobes, 

 f. Pygidium with three or four pairs of lobes. 



g. Pygidium with four pairs of lobes and paraphyses. — 

 Tjrpe, Aspidiotus phyllanthi Green... Greenoidea MacG. 



gg. Pygidium with three pairs of lobes. 



h. Pygidium without densariae or paraphyses; in- 

 sects producing galls upon plants. Maskellia Fuller, 

 hh. Pygidium with densariae but without paraphyses; 

 insects never producing galls upon plants. — Type, 

 Aspidiotus yuccarum Ckll Targaspidiotus MacG. 



ff. Pygidium with one or two pairs of lobes, 

 g. Pygidium without densariae. 



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

 otus cedri Green. Pygidiaspis MacG. 



