TRIBE ASPIDIOTINI 425 



b. Pygidium with median pair of lobes with lateral notches. 



c. Pygidium with median pair of lobes with mesal and lateral 



notches. 



d. Body with margin of cephalic end entire, not finely crenu- 

 late; pygidium with median pair of lobes quadrangular, deep 

 lateral and mesal notches; second pair of lobes spatulate, 

 bluntly pointed or bluntly rounded, entire or with faint lat- 

 eral notch; third pair of lobes spatulate, subequal to second 

 pair, bluntly rounded, entire or with faint lateral notch; 

 pectinae long and narrow, subequal in length to lobes, ar- 

 ranged 2, 2, 3, 8, those of each lateris unapectinae and 

 shorter than others, placed cephalad of third lobe; caudal 

 pectina of each third incisura much smaller than other two. 



South Africa on Euphorbia. tectaria Lindgr. 



dd. Body with margin of cephalic end finely crenulate; pygidium 

 with median pair of lobes quadrangular, deep mesal and lat- 

 eral notches, distal margin rounded between them; second 

 pair of lobes broader than long, lateral margin oblique, deep 

 lateral notch, mesal portion projecting; third pair of lobes 

 narrower, deep lateral notch, projecting mesal portion more 

 angular; distapectinae in median incisura, others unapecti- 

 nae, latter longer than lobes, arranged 2, 2, 3, 3; spiracerores 

 wanting; anus about twice its width from caudal margin; 

 vulva located near cephalic half of pygidium. Gymnaspis 

 africana Newst. Uganda, Africa. africana Newst. 



cc. Pygidium with median pair of lobes with distinct lateral 

 notches only, projecting, distinct, about as broad as long, distal 

 end bluntly rounded; second pair of lobes smaller, triangular, 

 bluntly pointed; third pair of lobes minute, pointed; pectinae 

 minute, short, narrow, lacinations minute, arranged 2, 2, 2, 1, 

 those of second and third incisurae and of each lateris 

 unapectinae; anus distant three or four times its width from 

 caudal margin. Sardenia, Italy on Osirys cecconi Leon. 



bb. Pygidium with median pair of lobes entire, large, broadly bluntly 

 rounded, distant; second and third pairs of lobes minute, subtri- 

 angular, more or less pointed; pectinae arranged 2, 2, 2, 5, those 

 of incisurae and three caudal ones of each lateris very broad, 

 deeply lacinate at distal end, cephalic two of each lateris slender, 

 unapectinae with short blunt branches; pectinae of each lateris 

 adjacent third lobe; setae limited to two on each lateris near 

 cephalic pectinae; center of pygidium cephalad of anus with large 

 tongue-shaped strongly chitinized area; anus distant two or three 

 times its width from caudal margin. Uganda, Africa on Anona. 



gowdeyi Newst. 



SPECIES OF TOLLASPIDIOTUS 



a. Pygidium with two plates in each third incisura; median pair of 

 lobes subquadrangular, distal end and angles broadly rounded, as 

 broad as long, entire; second and third pairs of lobes similar in 

 size and form; plates subequal in length to lobes, arranged 2, 2, 2, 0; 



