38 CLASSIFICATION OF THE ALEYRODID^E. 



being provided, like the others, with a pulvilliis, but only with a 

 robust claw. 



These characteristics, I suppose, are constant in the species which 

 form the group Aleu7'odicus, because I find them also in the species 

 which I shall describe after this, of which there is no doubt that it 

 is an authentic Aleurodieus, as it presents very distinctly all the 

 specific characteristics which serve to keep distinct from others the 

 forms composing this group. This will be confirmed, I repeat, by 

 other observations which will be able to furnish a perfect diag- 

 nostic characterization, notAvithstanding the fact that by the absence 

 of the adult forms the corresponding stage of the insect here de- 

 scribed presents the other characteristics little conspicuous, so as 

 to leave the author in doubt in regard to the place which ought to 

 be assigned to the species. 



Length of body 1.520 mm.; width of body 1.000 mm.; length of 

 waxy filaments exceeds 1 centimeter; thickness of waxy filaments 

 0.080 mm.; length of the conical process which supports the waxy 

 filament 0.200 mm. 



Adult female. — The general shape of the body conforms to that 

 of the congeneric species. The wings are well developed, the an- 

 terior being much larger than the hind wings. They are covered 

 with a very thin, whitish, waxy secretion. 



The forewings as well as the hind wings present numerous brown 

 spots of varying size and with a contour more or less notched, as 

 can be seen from figure 2, No. 8 [fig. 4, 5] . 



The legs are rather long, of medium thickness, subequal, the an- 

 terior pair being shorter. The variability of the length of the legs 

 is due chiefly to the difference in length which exists between all the 

 joints of the tibia and the tarsus, while the coxa, the trochanter, and 

 the femur in all three pairs of legs are of equal length. All the joints 

 of the legs are furnished Avith cilia which, on the whole, are short 

 and slender. Those inserted on the coxa are more delicate but more 

 numerous, while those inserted on the tibia are more robust and 

 shorter in length. The tibia near its distal apex presents also two 

 spurs of considerable size. The tarsus at its apex is provided with 

 two long, robust claws, one of which at its internal margin is 

 furnished with a tooth, the other being unarmed. Between the two 

 claws there is an empodium in the shape of a foliate lamina in which 

 the external marginal edge is furnished with numerous fine hairs. 

 The hind end of the abdomen terminates in an ovipositor consisting 

 of four pieces the outside two of which present a dentate external 

 margin. The last sternite shows a certain number of hairs system- 

 atically arranged. (Fig 2, No. 11 [fig. 4, 11]). 



