TRIBE ASPIDIOTINI 433 



b. Pygidium with seven or eight or more pectinae or plates on each 

 lateris. 



c. Pygidium with plates on lateres. 

 d. Pygidium with median pair of lobes with prominent mesal 

 and lateral notches, quadrangular; plates wanting in median 

 incisura, arranged in two groups of six each just cephalad of 

 each median lobe, separated by small marginal prominence; 

 each lateris cephalad of median lobe thickened for short dis- 

 tance, irregularly coarsely crenulate; anus distant from 

 caudal margin; spiracerores wanting. — Ceylon from galls of 



Amorphococcus mesuae. cuculus Green. 



dd. Pygidium with each median lobe only with prominent lat- 

 eral notch. 



e. Pygidium with pectinae and plates of lateres one-fourth 

 longer than lobes; median pair of lobes subquadrangular, 

 prominent, projecting, longer than broad, adjacent, lat- 

 eral margin straight to convex, prominent lateral notches 

 only, one or two; each lateris with 5-7 plates, very long, 

 much longer than lobes, curved, located adjacent to lobes 

 in positions for incisurae on lateres; setae long and slender, 

 as long as plates; anus large, slightly over twice its width 

 from caudal margin and about three times from vulva; 

 incisurae may have densariae. — Diaspis (Epidiaspis) con- 

 spicua Brain. — South Africa on Acacia, Gardenia, privet. __ 



conspicus Brain. 



ee. Pygidium with pectinae or plates of lateres subequal to or 

 shorter than lobes, usually with plates, at most furca- 

 pectinae; anus four times its width from proximal ends 

 of lobes; median pair of lobes quadrangular, mesal mar- 

 gins adjacent, prominent lateral and faint distal notches; 

 plates all shorter than lobes, stout, some rarely furcate, 

 placed adjacent to lobes; setae slightly longer than lobes, 

 five on each side; calles distinct. — Targionia celtis Her- 



rick. cueroensis Ckll. 



cc. Pygidium with pectinae on each lateris; median pair of lobes 

 large, subquadrangular, longer than wide, single mesal and 

 two or more lateral notches; each lateris with eight to ten 

 furcapectinae and plates intermixed, very long and slender, 

 some longer than lobes, located adjacent to lobe; lateres finely 

 serrate cephalad of pectinae; setae of two lengths, one lot long, 

 nearly as long as lobes, other lot minute, not projecting beyond 

 margin. — South Africa on Euphorbia spiniger Lindgr. 



b. Pygidium with three or four pectinae or plates on each lateris. 



c. Pygidium with anus ten times its width from caudal margin; 

 vulva more distant from anus than anus from caudal margin; 

 median pair of lobes subquadrangular, slight lateral notch, 

 distal end angular, as broad as long, prominent, projecting; 

 pectinae shorter than median pair of lobes, three on each lat- 

 eris, latapectinae, wanting in median incisura; setae as long 



