70 CLASSIFICATION OF THE ALEYEODIDvE. 



Subgenus LECANOIDEUS n. subgen. 



Insects with the characters of the subgenus Aleurodicus^ excepting 

 that the vertex of the adult is bih^becl and the lateral margin of the 

 pupa case is deflexed, curving under the ventral surface. The pupae 

 are devoid of the reduced compound pores near the vasiform orifice. 

 Lingula of pupa usually exserted; that of adult narrow and included. 



Type, giganteus n. sp. 



Species of Subgenus Lecanoideus. 



A. Pupa case large and broad, with the anterior pair of compound pores near 



cephalic extremity ^ mirahilis. 



B. Pupa case elongate, with the anterior pair of compound pores a considerable 



distance from the cephalic extremity giganteus. 



Aleurodicus (Lecanoideus) giganteus n. sp. 

 (PI. XXIV, figs. 1-12; PI. XXV.) 



This aleyrodid was collected by Mr. Albert Koebele at Pernam- 

 buco, Brazil, December 28, 1882. The host was not stated by Mr. 

 Koebele, but appears to have been a species of Ficus. As stated 

 with reference to A. iieglectus^ the present species was also carried 

 in the Bureau of Entomology collection as anonce Douglas, and this 

 latter was thus erroneously listed from Pernambuco, Brazil. This 

 is the largest species of the genus thus far recorded, although a much 

 larger member of the family, Udamoselis jngmentarla (p 25) from 

 South America, has been described by Enderlein,^^ with a wing 

 length of 5.5 mm. and a body length of 7 mm. 



DESCRIPTION. 



Egg.—FAor\g2iiQ, about 0.4 mm. long. Stalk short; eggs lying 

 prostrate on leaf, on which they are scattered promiscuously; brown- 

 ish in color and without markings (PI. XXIV, fig. 1). 



Pwpa case. — Length, from 1.5 to 1.85 mm. Width 0.9 to 1 mm.; 

 elongate, somewhat narrowed at each end. Convex, the sides de- 

 flexed in mature specimens, resembling a lecanium scale (PI. XXIV, 

 figs. 2, 3). Pupae are covered by a very abundant secretion of white 

 wax, of a generally flocculent appearance (PI. XXV). Examined 

 more particularly, there will be observed a group of vertical columns 

 considerably higher than the case is wide, from the abdominal region 

 of the dorsum, very compact at the base, but .separating more or less 

 into separate bundles distally. This secretion appears to arise from 

 the abdominal segments, extending completely across the dorsum, 

 from the compound wax pores on each side. Also in this columnar 

 type of secretion are found the glassy wax rods from the compound 

 wax pores which in this species are comparatively slender and short. 



