CLASSIFICATION 53 



caudal portion of abdomen not with a row 

 of large cerores; caudal abdominal segment 

 not projecting farther caudad than lateral 

 portions of penultimate segment; coriae be- 

 tween segments convex. KUWANHXAE. 



jj. Thorax with two pairs of spiracles which are 

 minute and often inconspicuous; ventro- 

 meson of the caudal portion of abdomen with 

 a longitudinal row of large cerores; caudal 

 abdominal segment projecting farther caudad 

 than the lateral portions of penultimate seg- 

 ment; coria between segments straight 



XYLOCOCCIXAE. 



ii. Abdomen never with more than three pairs of 

 spiracles located on segments one to three; 



rostrum consisting of single segment 



CALLIPAPPINAE. 



hh. Abdomen without spiracles; cuticle provided with 

 numerous short truncate setae arranged in longi- 

 tudinal rows; rostrum consisting of two incon- 

 spicuous segments. COCCINAE. 



gg. Abdomen provided with anal lobes and small anal 

 setae, often obscure; dorsal aspect of body often with 

 prominent longitudinal or transverse rows of setae; 



rostrum consisting of two segments. 



CYLINDROCOCCIXAE. 

 dd. Abdomen always with anal ring with anal ring setae. 



e. Body always bearing groups of pilacerores excreting 

 lamellae of hard white wax which are usually more or 

 less fused; tibio-tarsal sutures sometimes obsolete; abdo- 

 men frequently with seven pairs of spiracles; rostrum 



consisting of two segments. ORTHEZIIXAE. 



ee. Body never bearing groups of pilacerores; abdomen, so 



far as known, never provided with spiracles, 

 f. Rostrum consisting of three segments; abdomen not 

 provided with anal lobes or anal setae; antennae con- 

 sisting of seven segments; tarsus with toothed claw. 



PHENACOLEACHTIXAE. 



ff. Rostrum usually consisting of two segments, sometimes 

 of only single segment, never of three segments; abdo- 

 men provided with anal lobes and anal setae, some- 

 times obscure; antennae usually consisting of six seg- 

 ments, sometimes with less. 



g. Thorax always provided with prominent canellae 

 with cerores extending from mesospiracles, meta- 

 spiracles without canellae; anal lobes and anal setae 

 wanting; anal ring located at caudal end of body 

 on protuberance, each of six anal ring setae attached 

 to chitinous plate. TACHABDIINAE. 



