TRIBE DIASPIDINI 349 



lobes, arranged 0, 1, 6, those of each lateris arranged 

 1-1-4; mesogenacerores present; anus located near pre- 

 genacerores, apparently cephalad of vulva; dorsal ora- 

 ceratubae very numerous. India on Ficus, Solanum, 



Thea. manni Green. 



ff. Pygidium with pregenacerores always less than thirty, 

 g. Pygidium never with more than three plates on each 

 lateris. 



h. Pygidium with genacerores 4-7(11-15)20-26; me- 

 dian pair of lobes low, broad, divergent, distant at 

 proximal end, broadly rounded, serrate; second 

 pair of lobes incised, mesal lobelet twice or more 

 size of lateral, bluntly rounded, entire, lateral 

 lobelet triangular, pointed, entire; plates long, 

 stout, arranged 0, 1, 3, those of each lateris ar- 

 ranged 1-1-1; mesospiracerores 3-5. South Africa 



on Rhus. lounsburyi Cooley. 



hh. Pygidium with genacerores 6-9(11-20)29-46; meso- 

 spiracerores 5-6; plates slender, much longer than 



lobes. South Africa on Ekebergia 



louns'buryi ekebergiae Brain. 



gg. Pygidium always with more than three plates on 

 each lateris. 



h. Pygidium with second row of brevaceratubae al- 

 ways with oraceratubae present. 



i. Pygidium with second row of brevaceratubae 

 with 2-3 oraceratubae present, third row with 

 3-4 mesal and 4-5 lateral, fourth row with 3-4 

 mesal and 4-6 lateral; median pair of lobes 

 large, oblique, confluent at proximal end, dis- 

 tal end broadly rounded and entire, mesal mar- 

 gin faintly serrate; second pair of lobes large, 

 prominent, entire, incised, mesal lobelet larger 

 than lateral, bluntly pointed; plates stout, par- 

 ticularly those of lateres, arranged 0, 1, 5-9, 

 those of each lateris arranged l-l-lor2-2or4 ; 

 genacerores 8-15(19-31)13-23. California, Japan 



on Wistaria, Alnus, Salix wistariae Cooley. 



ii. Pygidium with second row of brevaceratubae 

 always with more than three oraceratubae. 

 j. Pygidium with second row of brevaceratubae 

 with nine oraceratubae present, other rows 

 with numerous irregularly arranged oracera- 

 tubae; median pair of lobes distinct, dis- 

 tant, oblique, divergent, margins undulate 

 or toothed; second pair of lobes not incised, 

 mesal lobelet three times size of lateral, 

 margins broadly rounded, entire; plates not 

 prominent, arranged 0, 1, 5, those of each 



