Baker & Moles.— the aleykodidü'; of south ameuica 625 



places it without a doubt iu Paralej/rodes. The foocl plants 

 of Parale f/rodes goi/abae are given as «Goyabeiro» ( Psi- 

 dium goyaba») Myrthaceae and «abacateiro» (Laurus sp.). 

 Habitat Rio de Janeiro. 



Sub-family Aleyrodiiiae Enderlein 



The raembers of this sub-family are characterized by 

 the presence iu the forewiug of the radial sector and cu- 

 bitus, with media almost entirely lacking. Radius may 

 or may not be present. 



The type genus is Alei/rodes. 



Twenty-one genera aro at present included in the 

 sub-family. These ma}' be distinguished as follows: 



Key to the Genera of the Aleyrodinae 



I. Forewiug of adult with radius j, present asa 



distiuct vein AleurocMton 



Forewiug of adult with radius ^ , lacking 2 



II. Pupa case with a sub-margiual row of papil- 



lae-like pores 3 



Pupa case without a sub-raarginal roAV of pa- 



pillae-like pores 4 



III. Thoracic tracheal folds visible and ending 

 in a comb of teeth; operculum nearly fiUing 



oriñce, obscuring lingula Aleuroparado.rus 



Thoracic tracheal folds not distiuct, lingula 



visible candad of operculum and lobed... Trialeurodes 



IV. Dorsal disk distinctly separated from the 

 sub-marginal área by a suture-like line or 

 depression 5 



Dorsal disk not separated frora the sub mar- 

 ginal área by a suture-like line or depres- 

 sion., 9 



V. Dorsum with large irregular shaped pores . . 6 

 Dorsum without large irregular shaped pores 7 



VI. Dorsum with mammiform pores Akurotithns 



Dorsum without mammiform pores, but with 



chitinized pores of varying length Siphoninns 



REV. CH. DE HIST. NAT. (1921) (40) 



