Baker & Moles.— the aleyrodid.tí of south América 631 



closely related to A. oculireniformis, naraely, vinsonioides 

 Cockerell and ocuUminntus Quaiiitauce and Baker. The 

 separation of these species is made ou tbe pupa case, as 

 adults of rinson'wides in tlie collection are fragraentary 

 feraales only. 



Type—Qdii. No. 1920U, U. S. National Museum. 



Aleuroplatus (Aleuroplatus) cockerelli (Ihering) 

 (Lám. LXXIII, D - F). 



Aleurodes cockerelli Ihering, Kev. Mus. Paulista, Vol. 

 2, 1897, p. 393. 



Aleuroplatus {Aleuroplatus) cockerelli Quaintance and 

 Baker, Proc. U. S. National Museum, Vol. 51, p. 384. 



Bialeurodicus cockerellii Quaintance wiis incorrectly 

 described as this species by Hempel and so cited by Kirk- 

 aldy in his catalogue. We have in the Burean only one 

 collection, taken on Baccharis sp. in Brazil. 



Genus Alcurothrixiis Quaintance and Baker 



Pupa case médium to small size, elliptic; margiu 

 sometimes angled; color variable, ranging from yellow to 

 almost black; margiu of case usually with an apparent 

 double row of t(^eth, the wax tubes well developed; sub- 

 raarginal área not separated from the dorsal disk; dorsum 

 witliout papillae or pores, but bearing along median line 

 a few pairs of prominent spinelike hairs; tracheal folds 

 not discernible; wax secretion usually copious, ñocculent, 

 or woolly, secreted by marginal wax tubes. Vasiform 

 orífice small, transversely elliptic; lingula obscured by 

 the operculura, which nearly filis the orífice. 



Adult with one flexure in radial sector of forewing 

 and no spur of media. Antennae of seven segments, of 

 which III is longcst. Sexes nearly equal in size. 



Type. — Aleijrodes howardi Quaintance. 



Kei/ to the species oj the Genus Aleurothrixiis 



I. Pupa case with a row of distinct spines on 



submarginal área 2 



Pupa case without such row of spines 3 



