ALEURODICUS DUGESII. 57 



Dorsum but little convex, body segments quite distinct in the dried 

 specimens (PI. XIII, fig. 1). There is a. very copious secretion of 

 white wax covering the lower surface of the infested leaves and 

 completely hiding the insects beneath (PI. XIII, fig. 2). The wax 

 rods, from the compound wax pores, are unusually long, attaining 

 in more perfect specimens a length of from 12 to 15 mm. Generally, 

 however, these rods are more or less broken and are intermingled 

 Avith bands or plates of wax from the marginal wax tubes. There 

 is a short vertical fringe of white wax often persisting on the leaf 

 after the pupa case has disappeared. 



The color is yellowish to brownish, some specimens, as seen under 

 hand lens, being dark brown. The empty case is colorless. There 

 is a narrow marginal rim composed of the short, squarish wax tubes, 

 the incisions being shallow and acute (PI. XIII, fig. 4). On the 

 dorsum there are seven pairs of very conspicuous compound wax 

 pores, six pairs on the abdomen about equally developed, and a pair 

 on the cephalic region of about half the size of the former. From 

 the marginal area all around arise a series of spines, 10 to 12 on a 

 side, and there is a pair cephalad of the vasiform orifice. 



Vasiform orifice subcordate, about as wide as long. Operculum 

 subrectangular, about twice as wide as long. Lingula spatulate, 

 rather short and broad, bearing a pair of spines (PI. XIII, fig. 2). 

 The rudimentaiy legs and antennae are quite evident on the ventral 

 surface, and exhibit the usual structures for the typical forms of this 

 genus. 



Adult. — A single imperfect male was found among the pupse on 

 the leaves. The wings are without markings (PI. XIII, fig. 5). 



This species, from the structure of the pupa case, suggests ?i€(7- 

 lectus, common on Anona spp,, guava, Fieus, etc., in the West In- 

 dies, but differs in that the wings are not spotted or banded, in the 

 large size of the two caudal pairs of compound wax pores, and there 

 are differences in the lingula. From cocois it differs in numerous 

 particulars, as will be noted on comparison. This is the third species 

 of this genus recorded from outside of tropical America, though it 

 may have been introduced in the Philippines along with its food 

 plant. 



Type. — No. 14766, U. S. National Museum. Described from nu- 

 merous eggs, pupae in balsam mounts, and infested leaves. 



Aleurodicus dugesii Cockerell. 



(PI. XV, figs. 1-13; PI. XVII, fig. 1.) 

 Aleurodicus dugesii Cockerell, Can. Ent., vol. 28, p. 302 (1896). 



Specimens of this species are in the Bureau of Entomology collec- 

 tion from several localities in Mexico, and on several different food 

 plants, as follows: Oaxaca, on Hibiscus; Guanajuato, on Anona and 



