TRIBE DIASPIDINI 315 



dd. Pygidium with median pair of lobes with mesal margins 

 long and straight near proximal end, broadly rounded, 

 finely crenulate; second pair of lobes incised, mesal lobelet 

 larger than lateral, distal end of mesal lobelet rounded, of 

 lateral lobelet pointed; third pair of lobes similar to sec- 

 ond, smaller; plates long and slender, much longer than 

 lobes, arranged 0, 1, 1, 8, those of second incisurae furca- 

 pectinae, those of each lateris arranged 1-7; genacerores 



27-31(55-57)31-39. Natal on Melia, Ricinus fulleri Ckll. 



cc. Pygidium with none of lobes incised; median pair of lobes 

 distant, broadly rounded, entire; second and third pairs of 

 lobes subquadrangular, margins substraight, distal ends ser- 

 rate; fourth pair of lobes smaller, subquadrangular, angles of 

 distal end prolonged, spine-like; plates slightly longer than 

 lobes, arranged 0, 0, 0, 3, 6, those of each lateris arranged 3-3; 

 anus located caudad of vulva near caudal margin; setae as 

 long as lobes; genacerores 8-8(17-20)9-10. Greece on Pistacia.__ 



gennadii Leon, 

 bb. Pygidium with two pairs of lobes. 



c. Pygidium with median pair of lobes with proximal end dis- 

 tinctly wider than distal, never constricted on proximal portion. 



d. Pygidium with second pair of lobes short, distinct, incised, 

 e. Pygidium with genacerores 6-25(14-46)12-38. 



f. Pygidium with second pair of lobes small, incised, 

 mesal lobelet twice or more as long as lateral lobelet; 

 median pair of lobes much larger, subtriangular, both 

 margins crenulate, distal end entire or margins rarely 

 subentire and notched; each lateris with two groups 

 of bluntly rounded or toothed latadentes, each with an 

 oraceratuba; minute latadentis in each second incisura; 

 plates of furcapectinae arranged 0, 1, 10-12, those of 

 each lateris arranged 1 or 2-3-6 ; anus and vulva super- 

 imposed; genacerores 6-25(14-46)12-38; mesospiracerores 

 15-17. Europe, south eastern United States, West 

 Indies, Mexico, South America, China, Japan, India, 

 south Africa, Ceylon, New Zealand, Australia, etc. on 

 peach, plum, prune, cherry, apricot, walnut, grape, per- 

 simmon, geranium, etc. pentagona Targ. 



ff. Pygidium with second pair of lobes doubly incised, me- 

 dian lobelet much longer than mesal or lateral; plates 

 long, one in each second incisura, two cephalad of each 

 second lobe, about fourteen on each lateris; genacerores 



9-9(26-26)16-19. Japan, California on Osmanthus 



pentagona auranticolor Ckll. 



ee. Pygidium with genacerores 76-76(51-51)40-50; median pair 

 of lobes well developed, triangular, rounded at distal end, 

 slightly serrate; second pair of lobes only slightly de- 

 veloped; plates strong, arranged 0, 1, 12-14, those of each 

 lateris arranged 1-2-4-6-6-7; brevaceratubae arranged in 



