128 



ASPTDIOTIJS ARTTOULATUS. 



a marked division between the thoracic and abdominal 

 regions" (Morgan); cephalic and thoracic area forming 

 a section of a hemisphere, margin finely crenulntrd in 

 front, posterior angles with one or two minute spine-like 

 processes. Rudimentary antennas with a single fine- 

 curved hair. Rostrum with central filaments very 

 short. Spiracles, simple tubular organs, upper pair 



%-\MmLy\'^4;; ;P, ////. n^ ' 



^sSMm&mm 





FIG. 16. Aspidiotus artictdatus, 



of adult ?. x 250. 



opposite the rostrum, lower pair on the abdominal 

 segment near its articulation with the thorax. 



Pygidium (Fig. 16) narrowly rounded. Median pair 

 of lobes more or less rectangular, outer margin usually 

 faintly notched ; second pair largest, margin sloping 

 upwards, and notched towards the base of the outer 

 margin, or sometimes bidentate. The single pair of 



