N0.2ir.r,. SUBFAMILY ALEYRODINAE—QUAINTANCE <€ BAKER. 357 

 ALEUKOCYBOTUS GBAMINICOLUS (Quaintance). 



Plate 40, fig. 1. 

 Aleurodes graminicola Quaintance, Can. Ent., voi. 31, 1899, p. 89. 

 This species is considerably smaller than setiferus, from which it 

 can be easily separated by the absence of the marginal vasiiorm 

 spines. 



The type is composed of eggs, larvae, pupa cases, and an adult 

 male. 



Type.— Cat. No. 1478, U.S.N.M. 



ALEUROCYBOTUS SETIFERUS, new species. 



Plate 40, fig. 2. 



Specimens of this species have been received from two localities. 

 The first lot was found on Imperata in Java by Edward Jacobson, 

 1907. The second lot was collected on a grass at Peradeniya, Ceylon, 

 September 8, 1913, by A. Rutherford. 



Pupa case. — Size 1.472 by 0.8 mm. Doreum not arched and with 

 the segmentation distinct; the pit-like structures forming a double 

 row along median portion of abdomen distinct though not so promi- 

 nent as in graminicolus. Vasiform orifice about 0.08 by 0.08 mm. 

 and situated 0.16 mm. in from the caudal margin. Tip of lingula 

 sometimes extending a short way beyond the vasiform orifice. Margin 

 of case entire and just within it a row of about 32 vasiform spines 

 situated on tubercles. Color of case yellowish with a median dark 

 brown area, which sometimes spreads out so as to give the case a 

 mottled appearance. Eyes showing through the case as purple spots. 

 On the leaf there is scarcely any wax apparent, the pupa lying flat 

 upon the surface. 



Adults. — ^Unknown. 



Described from pupa cases in balsam mounts and dry upon the 

 leaves. 



Type.— Cat. No. 20204 U.S.N.M. 



Genus ALEUROLOBUS Quaintance and Baker. 



Aleurolobus Quaintance and Baker, Tech. Ser. 27, pt. 2, Bur. Ent. U. S. 

 Dept. Agr., 1914, p. 108. 



Pupa case of medium size, subelhptic to oval in outline; color 

 usually dark brown to blackish; margin toothed, the wax tubes only 

 moderately developed; submarginal area separated from dorsal 

 disk and much fluted by suture-like lines; dorsum without papillae, 

 though minute pores may be present; tracheal folds evident in some 

 species, though obscure or wanting in others ; when present, terminat- 

 ing on margin of case in a few specialized teeth; vasiform eye- 

 spots usually present on cephalic portion of case; wax secretion 

 usually present as a narrow fringe from marginal wax tubes and also 



