SYSTEMATIC TREATMENT 



Genus PALEOCOCCUS Ckll. 

 Fig. 1. 



Monophleboid Coccidae of the general type of the genus Icerya; 

 adult female possessing a marsupium in which the eggs are deposited 

 and in which they remain until hatching, this marsupium formed by the 

 invagination of a portion of the venter of the abdomen (Fig. 1A) and 

 communicating with the exterior by a large, circular, non-contractile 

 opening situated just behind the posterior pair of legs (Fig. IB). Be- 

 fore the emergence of the larvae this opening is closed by a secretionary 



Fig. 1. Paleococcus, morphological details : A, diagrammatic, vertical, longitud- 

 inal section through an adult female to show position of marsupium; B, 

 diagram of ventral side of body of adult female to show position of open- 

 ing of marsupium ; C, spiracle ; D, foot ; E, antenna of P. morrilli. 



flap which originates from the pores at the edge of the opening. Three 

 pairs of abdominal spiracles are present, these all of a simple type (Fig. 

 1C), situated at the posterior end of the abdomen. Antennae ten to 

 eleven-segmented. Anal tube lacking in all stages except the first, in 

 this stage very small. First stage larva as in Icerya and development as 

 in that genus. 



