412 THE coccroAE 



rounded, prominent lateral notch; pectlnae with slight laci- 

 nations, arranged 2, 10 or more, those of each lateris near a 

 lobe; dorsal oraceratubae few in number, arranged in three 

 rows; setae as long as or longer than pectinae; mesal calles 

 fused and distant from lateral calles, latter L-shaped; anus 

 three times Its width from caudal margin, about five times 

 from vulva, and about eleven times from mesal calles; gena- 



cerores (4-4)4-7. — Arizona on Prosopis candidula Ckll. 



dd. Pygidium with mesal margins of densariae not longer than 

 lateral. 



e. Pygidium with genacerores( 8-10) 5-6; median pair of lobes 

 quadrangular, rounded, lateral and mesal notches, mesal 

 margins adjacent, divergent; margin of pygidium cephiJad 

 of each incisura produced spine-like; pectinae not deeply 

 lacinate, plates and pectinae, arranged 2, 7, plates of me- 

 dian incisura short, about as long as lobes, those of each 

 lateris in three groups, 2-3-2, two cephalic ones plates, 

 others unapectinae. — Aspidiotus cydoniae Comst. — Southern 

 States, Kansas, New Mexico, Mexico, West Indies, Ceylon, 

 Samoa on quince, fig, palms, orange, tea-plant, cactus, 



Latania, Jasminum. lataniae Sign. 



ee. Pygidium with genacerores 3-7(12-15)7-11; median pair of 

 lobes broad, prominent lateral notch, sometimes with mesal 

 notch; densariae fused, forming semicircular thickening, 

 those of second incisurae larger than those of third; plates 

 of median incisura short, inconspicuous, chitinous proces- 

 es, each lateris with 8-10 plates and furcapectinae; dorsal 

 oraceratubae numerous and prominent. — Ohio on Aesculus. 



ohioensis York, 

 cc. Pygidium with a single plate in median incisura, three pectinae 

 on each lateris in second incisura and two in third; median 

 pair of lobes quadrangular, faint lateral notches, angles round- 

 ed; densariae of second incisura with mesal margins larger 

 than lateral, third incisura with lateral margin nearly obsolete; 



genacerores 0-5(6-10)11-11. — Iowa, Texas, on currant 



hunteri Newl. 

 aa. Pygidium without pectinae or plates in median incisura. 

 b. Pygidium with pectinae on each lateris. 



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

 es, not adjacent, quadrangular, mesal margins oblique; two 

 pairs of densariae, two unapectinae associated with each second 

 incisura and three with third and 3-5 plates cephalad of third; 

 lateres finely serrate; genacerores 0-4(4-9)3-7. — Ohio, Illinois, 

 Indiana, Tennessee, Kansas, Florida, Jamaica, Europe on Vitis, 



hickory. uviae Comst. 



cc. Pygidium with median pair of lobes with lateral notch only. 



d. Pygidium with three pairs of densariae, mesal thickening of 

 densariae of second and third incisurae only slightly longer 

 than lateral; median pair of lobes large, quadrangular, dis- 



