54 THE COCCIDAE 



gg. Thorax never provided with canellae; anal lobes 

 present, sometimes obscure; anal ring more or less 

 distant from caudal end of body and each anal ring 

 seta never attached to chitinized plate, 

 h. Body never provided with octacerores, these gener- 

 ally arranged in longitudinal transverse or margi- 

 nal rows; rostrum consisting of a single segment. 

 hh. Body never provided with octacerores; rostrum, 

 so far as known, always consisting of two seg- 

 ments. 



i. Body strongly depressed, elliptical or oval, and 

 its periphery fringed with flattened suboval 

 scales; anal lobes obscure or wanting, anal 



setae large and distinct. APIOMORPHINAE. 



ii. Body rarely depressed, elliptical or oval in 

 outline, usually elongate, and its periphery 

 never fringed with flattened suboval scales; 

 anal lobes and anal setae usually distinct, 

 j. Body almost naked or sparsely setaceous, 

 with setae spine-like and arranged in longi- 

 tudinal or marginal rows, body often with 

 cerarae; cerores abundant, so that body is 

 usually covered with mealy or powdered wax; 

 ocellana present on each side of head; anal 

 ring complete, rarely divided, length of anal 

 ring setae usually several times width of 



anal ring. ERIOCOCCINAE. 



jj. Body usually provided with prominent spine- 

 like setae, generally arranged in marginal 

 rows, sometimes in longitudinal rows, never 

 provided with cerarae; cerores never abund- 

 ant, always a few in number and body at 

 most only rarely covered with mealy or 

 powdery wax; ocellanae wanting; anal ring 

 often subdivided or obscure, anal ring setae 

 generally short, at most not much if any 

 longer than width of anal ring._KEEMESiiNAE. 



cc. Abdomen always longitudinally cleft at caudal end and with 

 an operculum on each side near the caudal end of cleft; body 

 not or only rarely provided with octacerores; rostrum con- 

 sisting of single segment; anal ring situated at cephalic end 

 of lumen of an anal tube and concealed externally unless 



exserted. LECANIINAE. 



bb. Abdomen always with single pair of spiracles, always located on 

 first segment; tibio-tarsal sutures always wanting; body never 

 with pilacerores; rostrum consisting of two segments; body with 



cerores, few in number, never with ceratubae. CONCHASPINAE. 



aa. Abdomen consisting apparently of six segments, caudal segment 

 depressed and strongly chitinized, forming a pygidium, bearing two 

 long anal setae, decussating and folded over abdomen; rostrum 



