32 



THE CANADIAN ENTOMOLOGIST 



Second Stage. — Only exuviae are available for examination. In these one 

 side is much more heavily chitinized than the other (Fig. 9B). The pygidium 



(Fig. 11) is short, broad and 



almost truncate. There are ap- 

 parently two pairs of very small 

 lobes and the dorsum bears a 

 few very small ducts. 



Notes. — This differs rather 

 widely from the other species 



Fig. 10. — Protodiaspis lobala, n.sp. Pygidium 

 of adult female. 



Fig. 11. — Protodiaspis pulchra, n.sp. Pygidium 

 of second stage from exuvia. 



of the genus, so much so as to complicate the definition of the group, but it 

 may be referred here for the present, at least. 



Genus Ancepaspis, new genus. 



Coccidae referable to the subfamily Diaspin;r but in which neither the 

 male nor the female secretes a scale, the adult of both sexes being included 

 within the derm of the preceding stage which becomes heavily chitinized; exuvia 

 of second stage of female dehiscing about the posterior margin to permit the 

 escape of the larvae; adult fem.ale without circumgenital pores, and all stages 

 without tubular ducts either on the pygidium or elsewhere; pygidium of the 

 adult female with the margin more complex than that of the second stage, or 

 at least not less complex. Small species (adult less than 1 mm. long) occurring 

 on hosts of the families FabicecF, Mimosacece and Cassiacea'. 



Type of the genus, Pro'.odiaspis Iridcni-aM Ferris^ 



Notes. — In addition to the type, the following may definitely be referred 

 to this genus; Protodiaspis anomala Green, P. edent-ata Green and an undescribed 

 species which I shall discuss in another paper. Green has suggested that 

 Fiorinia syncarpice Maskell and F. secreta Green are congeneric with this group, 

 but in both of these species the male is described as having a secretionary scale. 

 I have seen the male of an Ancepaspis only in connection with the undescribed 

 species mentioned above, but this species is so clearly congeneric with at least 

 tndenta.-a and edeniata that there can be no question as to the relationship of 

 these forms. 



This is a most peculiar group, having but little resemblance to the ordinary 



Diaspine types. It is probably not related to such genera as Fiorinia and 



Leucaspis, in which tubular ducts are present at least in the nymph. 



1. Protodiaspis tridentata Ferris, Contrib. Knowl. Coccidae Sw. U. S., p. 46, fig. 22. In 

 Star.ford University Publications, University Scries, 1919. 



