TRIBE ASPIDIOTINI 457 



lattice-shaped thickenings not strongly chitinized, seen with difficulty 

 South Africa on Lycium. i ycii Brain ; 



SPECIES OF LATTASPIDIOTUS 

 a. Pygidium with plates or pectinae in median incisura. 



b. Pygidium with furcapectinae, wanting on lateres, furcapectinae 

 distinctly divided, slightly longer than lobes, arranged 2, 2, 3, 0; 

 median pair of lobes longer than broad, slightly constricted on 

 proximal portion, mesal and lateral notches distinct, distal end 

 bluntly rounded between them; second and third pairs of lobes 

 long, narrow, twice as long as broad, distinct mesal and lateral 

 notches; mesospiracerores 9-18, metaspiracerores (?)0; oracera- 

 tubae large, arranged in longitudinal rows; body with cephalic 

 portion bearing many large, widely separated setae; anus distant 

 from caudal margin. Uganda, Africa on Baikea.__6aifceae Newst. 

 bb. Pygidium with plates, one to three on each lateris, plates as long 

 as or slightly longer than lobes, arranged 2, 2, 3, 1-3; median 

 pair of lobes longer than broad, subtriangular, bluntly pointed, 

 faint lateral notch; second and third pairs of lobes smaller than 

 median, second smaller than third, subtriangular, faint lateral 

 notch or entire; lateres with indentations and lobe-like projec- 

 tions; three pairs of paraphyses with cephalic end with ball-like 

 enlargements, second and third pairs sometimes represented only 

 by cephalic enlargements; anus located on line drawn through 

 cephalic enlargements of second paraphyses, covered by cuticu- 

 lar flap, caudal margin of flap deeply emarginate. South Africa 



on Acacia. laciniae Brain. 



aa. Pygidium without pectinae or plates in median incisura. 



b. Pygidium with two plates in each second incisura; median pair 

 of lobes quadrangular, entire, truncate with rounded angles; 

 second pair of lobes smaller than median, broader than long, 

 faint lateral notch, rounded; third pair of lobes broader than 

 second pair, distinct mesal and lateral notches with rounded pro- 

 jection between them; each lateris with two pairs of dentate 

 projections, generally larger than lobes; plates short, subequal in 

 length to lobes, arranged 0, 2, 3; setae slightly longer than lobes; 

 paraphyses in three pairs, mesal pair longest, lateral pair short- 

 est, uniform in width throughout; mesospiracerores 4-4, meta- 

 spiracerores 1-2. Barbados on grape fossor Newst. 



bb. Pygidium with one plate in each second incisura. 



c. Pygidium with single plate on each lateris cephalad of third 

 lobe, this plate about twice as long as median lobe, other 

 plates subequal in length to lobes, arranged 0, 1, 3, 1; median 

 pair of lobes broader than long, faint mesal and lateral 

 notches; second pair of lobes short, broader than long, very 

 faintly notched; third pair of lobes irregular in form, some- 

 times notched; setae very long and slender, especially cephalic 

 ones; paraphyses in three pairs, distinctly knobbed at cephalic 

 end, mesal and second pairs subequal, third pair oval in out- 



