OF THE FAMILY COCCIDAK 



57 



and 42-46, average 44 u. wide), with 4-8 (average 6) f.s. of medium width, 1-2-1-5 (average 13) 

 times as long as width of segment ; with 1-3 usual sensilla basiconica. Segments IV-IX 

 cylindrical ; lengths of these segments (in (i) 1 18-152 (average 138), 122-148 (average 137), 

 1 1 8-1 4 1 (average 131), 99-133 (average m), 91-106 (average 97) and 80-99 (average 86) 

 respectively, widths varying from 21-27 V- with distal segments wider than proximal ones ; 

 with 15-22 (average 18), 15-23 (average 20), 18-28 (average 23), 16-25 (average 20), 14-18 

 (average 16) and 15-21 (average 18) f.s. respectively, and occasionally with one or two h.s. on 

 segments IV-VI ; antennal bristles on segments VIII IX not markedly different from f.s. 

 Segment X : terminal part not constricted ; 67-86 (average 76) u, long and 20-23 (average 22) 

 \x wide ; carrying 5-8 (average 6-4) f.s., 3 capitate subapical setae, and 5 antennal bristles of 

 which the 3 longest ones are about half as long as the segment and the 2 shorter ernes rather 

 similar to the f.s. ; with 2 sensilla basiconica ventrally, one near apex and the other more 

 proximal. 



Thorax 460-532 (average 503) ;x long. 



Prothorax. Pronotal ridge strong, but medially interrupted by weak sclerotizatioii. Lateral 

 pronolal sclerites small, without setae. Medial pronotal setae : usually 2 h.s. Post-tergites small 

 and irregular, without striations and without setae. Pleural structures typical of family. 

 Sternum with strong transverse and median ridges, well sclerotized triangular sclerite and rathei 

 distinct sternal apophyses. Anteprosternal setae absent ; prosternal setae : sometimes one h.s. 

 on each side. 



Mrsothorax. Mesoprephragma with shallow emergination. Prescutum about twice as 

 wide as long (average 160 and 83 \i respectively) ; anterior margin strongly curved ; laterally 

 bounded by the prescutal ridges and posteriorly by the presented suture ; slightly more heavily 

 sclerotized medially but not reticulated. Scutum. Median membranous area subrectangular ; 



pr. 



Q Eb~ 



Fig. 12. Phyllostroma myrtilli (Kalt.), dorsal and ventral view. 



