642 REVISTA CHILENA UE Hl.STOHIA NATl^RAL 



Dialeurodes (Dialeurodes) tricolor Quainfance and 

 Baker (Lám. LXXV, H-L). 



Dialeurodes tricolor Qnaintauce and Baker, Proc. 

 U. S. Xat. Museum, Yol. 51 (?), p. 419 (?). ^ 



This species which is large and beautifuU}^ raarked 

 was collected at Eubato, Brazil and was received from 

 Dr. F. Xoack in Jiily, 1898. 



We have only one representative from South Amer- 

 ica of tlie subgenus Gic/aleurodes. It is Dialeurodes (Gi- 

 galeurodes) strutliantlú (Hempel). 



Dialeurodes (Gigaleurodes) strutlianthi (Hempel) 

 Píate X, M-0). 



Aleurodes struthantlú Hempel, Anu. Mag. Xat. Hist., 

 Vol. 8, 1901, p. 387. 



The Burean has only one collection of this species, 

 that sent by Dr. H. von íhering, collected at Sao Paulo, 

 Brazil, on an unknown forest tree. The pupa cases are 

 íight brown in color with various dark brown markings. 

 In soms, nearly the whole case is dark brown with a light 

 área at the cephalic portion of the dorsum, in others the 

 pupa case is light with small áreas of dark brown. Around 

 the margin of each case is a dark brown band. Other 

 collections have been reported from Parnahyba and Sao 

 Paulo, Brazil, on Strutliantlüs flexicanlis M.2ixi., orange, and 

 «Mechilia flora». 



Genus Trialeurodes (Ckll.) Quintance and Baker 



Pupa case médium to small in size, elliptic, usually 

 elevated from the leaf by a palisade of white wax; color 

 variable, ranging from whitish to dark bro^vn; margin of 

 case toothed, the AVax tubes moderately developed; sub- 

 marginal área not separated from dorsal disk; sub-margi- 

 nal área Avith a rov of, or a number of, large papillae or 

 pores; thoracic tracheal folds rarely distiuguishable; usua- 

 lly a distinct furr.ow from vasiform orífice to caudal mar- 

 gin of case; wax secretion a series of brittle, glassy rods 

 from dorsal papillae or pores and a palisade of Avhite wax 

 elevatiug case from leaf; vasiform orifico subcordate, usua- 

 lly notcliedou caudal end; operculum trausversely elliptic, 



