NO. 2156. SUBFAMILY ALEYRODJNAE—QVAINTANCE ct BAKER. 423 



about the veins, as may be seen in the figure. A distinct dark area 

 is present between the two transparent Unes before mentioned. The 

 margin (fig. 3) is armed with a large number of toothlike projections 

 armed with hairs. The hind wing (fig. 4) is similar m color but more 

 uniform than the forewing. The vein is armed with one or some- 

 times two sensoria similar to those in the radial sector of the fore- 

 wing. The proximal portion of the costal margin is armed with a 

 series of stout hairUke spines situated on small tubercles. These are 

 in two series — one on the outer and one on the inner portion of the 

 vein. The vasiform orifice (fig. 5) is somewhat cordate in shape, 

 with the anterior margin straight. 



Described from specimens on foliage and in balsam mounts. 



Type.— Csit. No. 19051, U.S.N.M. 



DIALEURODES (RUSOSTIGMA) TOKYONIS (Kuwana). 



Plate 68, figs. 6-10. 

 Aleyrodes tokyonis Kuwana, Pomona Journ. Entom., vol. 3, 1911, p. 622. 



Egg. — Short, stout, smoky brown in color, and without reticula- 

 tions; stalk quite short, holding egg on leaf in upright position. 



Pupa case (fig. 6). — Size 1.52 by 1.28 mm.; outline almost entire, 

 with slight indentures at the pores of tracheal folds; dorsum 

 slightly rounded, with the sutures not very distinct; color trans- 

 parent, slightly yellowish. The dorsal disk is granular, being 

 covered with a series of small polygonal markings which graduate 

 on submarginal area into more or less concentrically arranged, but 

 disconnected, thickenings in the derm, the individual thickenings 

 showing one or two acute incisions, as shown in figure 7. Tracheal 

 pores covered with irregular markings quite similar to those found 

 in eugeniae, but they are much more numerous toward the pores 

 (fig. 8), which are surrounded very thickly by them. In the thor- 

 acic folds the sculptured area does not extend so far mesad as in 

 the caudal fold, where it reaches the vasiform orifice and partially 

 surrounds it. The pore of each fold is small and irregular and there 

 are no distinct processes, though blunt, tooth-like projections are 

 sometimes noticeable. The vasiform orifice (fig. 9) is subcordate in 

 outline, with the anterior margin straight. The caudal inner margin 

 is devoid of teeth, but is covered with a series of fine hairs. The 

 operculum is somewhat the same shape as the orifice, though with 

 straighter sides. It nearly altogether covers the lingula, only the 

 tip of which protrudes from below it; both the lingula and the caudal 

 portion of the operculum are setose. The margin is minutely ser- 

 rate, but it is marked by a large number of ridges or sutures extend- 

 ing irregularly mesad, so that in some specimens there appears to be 

 a marginal rim. 



