NO. 2156. SUBFAMILY ALEYRODINAE—QUAINTANCE £ BAKER. 395 



represent a species of Tetraleurodes. It is evident, however, that 

 these bear no relation to the present species. Specimens have been 

 received also from H. B. Scammell from New Egypt, New Jersey, 

 May 21, 1914, on cranberry, and from Pemberton, New Jersey, July 

 18, 1914, on blueberry. 



Pupa case (pi. 57, fig. 1). — Size 0.96 by 0.704 mm. Shape oval, 

 narrowest across the thorax. Abdominal segments not distinctly 

 seen on account of the dark color, but in specimens which are suffi- 

 ciently clear they are seen to extend almost to the margin of the case. 

 Suture separating thorax and abdomen considerably curved cephalad, 

 but not past the third thoracic segment. Margin composed of 

 evenly rounded, very shallow teeth, from which suture-like markings 

 lead mesad and give the appearance of a pore-like structure. Thoracic 

 tracheal comb distinct; composed of usually four prominent teeth, 

 which are evenly rounded and have at their bases clear areas similar 

 to those at the base of the marginal teeth (pi. 53, fig. 15). Caudal 

 tracheal fold aimed with a comb similar to those on thoracic margin. 

 Vasiform orifice (pi. 53, fig. 16) elongate, with the rim much thickened, 

 the operculum filling about half the orifice. Setae latero-cephalad of 

 orifice and about halfway between orifice stout and long. Dorsum 

 with a few minute pores irregularly arranged. Transparent eyespots 

 absent; color dark brown to black. 



Adult male. — Color yellow, shaded with reddish brown on the tho- 

 rax; eyes and tip of labium dark brown; wings transparent, the 

 costal margins yellowish. Antennae imbricated; segment III 0.128 

 mm.; segment IV 0.02 mm.; segment V 0.032 mm.; segment VI 

 0.046 mm.; segment VII 0.05 mm. Segment III is armed with a 

 distal, circular, fringed sensorium, and segment VII is armed near 

 its middle with a prominent spine which extends beyond the distal 

 extremity of the segment. Clasper 0.112 mm. long, slightly pubescent 

 distad, and armed with a few stout spines; distal spur of the claspers 

 acute, and just mesad of the spur is a double-lobed structure. Length 

 of insect from vertex to tip of claspers 1.152 mm.; length of fore- 

 wings 0.96 mm. 



Adult Jemale. —SimilsiT to the male in general appearance. Much 

 larger than the female characterized in the original description. 



Type.—Csit. No. 19195, U.S.N.M. 



ALEUROPLATLIS (ALEUROPLATUS) QUERCUS-AQUATICAE (Quaintance). 



Plate 57, fig. 2; plate 53, figs. 17, 18. 



Aleurodes quercus-aquaticae Quaintance, Tech. Ser. 8, Div. Ent., U. S. Dept. Agr., 

 1900, p. 35. 



This species was fuUy described by Quaintance. Several species 

 of the genus are very closely related to it, especially validus, in which 



