NO. 2156. SUBFAMILY ALEYRODINAE—QUAINTANCE cC- BAKER. 409 



ritsar; Khasia Hills; Assam; Saharanpur) ; Japan (Nagasaki); 

 China (Canton; Pekin; Shanghai). It is stated, on good authority, 

 to occur in Chile; Mexico and Brazil are also given for the species 

 by G. W. Kirkaldy. 



In the original description of the first larval stage 38 marginal 

 bristles are given. This seems evidently due to the fact that the 

 margin possesses a series of small tubercles, some of which possess 

 spines and some of which do not. The Riley and Howard slides of 

 this instar show the correct number of spines for citri, but it was 

 evidently supposed by those gentlemen that the tubercles not pos- 

 sessing spines had lost them and thus the fuU number of spines 

 was described and figured. This fact led Morrill and Back to conclude 

 that Riley and Howard's description was based on specimens of 

 dtrifolii (nuhifera), for they remark: 



" In the text the description of the first stage or instar of the larva 

 was evidently based on a specimen of the spotted wmged white fly 

 and the illustration of the first instar was also based on the species 

 withhttle doubt." 



Egg (pi. 63, fig. 9). — The eggs are placed irregularly upon the under 

 surface of the leaf and are greenish yellovf in color, either polished or 

 pruinose, due to the deposition of mealy wax by the adults. The 

 surface is without the reticulate covering observed on the eggs of 

 dtrifolii Morgan. The stalk is situated at the larger end of the egg 

 and is about as long as the egg is wide. Average size, 0.21 by 0.085 

 mm.; shape subeUiptical. In hatching the egg spUts almost its 

 entire length and the two halves of the empty shell do not remain 

 widely apart, as is the case with the eggs of dtrifolii. 



Larva, first instar. — Color light yellowish, with sometimes orange 

 areas in the abdomen showing through; eyespots dark brown; shape 

 oval, broadest across the anterior abdominal segments, flat upon the 

 leaf. There is no lateral or dorsal secretion. Size 0.32 by 0.2 mm. 

 Margin entire, armed with 17 small tubercles on each side, 14 of these 

 bearing bristlelike hairs, as shown in figure 6, while 3 do not have 

 these hairs. On the cephalic extremity there is another pair of short 

 hairs situated somewhat ventrad of the margin. This makes in all 

 a row of 30 hairs encircling the margin. Of these the second cephahc 

 pair and the first and third caudal pairs are long, the others short. 

 Antennae (pi. 63, fig. 8) of three segments, the third being lashhke and 

 showing two angled spurhke portions, one at the extremity and 

 one about a quarter of the way from the distal end. Legs (pi. 63, 

 fig. 7) with a swoUen portion at the distal extremity, the median seg- 

 ment and the proximal one each armed with a long curved spine. 



Second instar. — Color pale yellowish, in some specimens with 

 almost transparent areas; eyespots dark purplish brown. Shape 

 oval, broadest across the first of the abdominal segments; size 0.4 



