46 CLASSIFICATION OF THE ALEYRODIDiE. 



Aleurodicus coccolobas n. sp. 

 (Plate XI, fi;,'s. 1-8.) 



Collected on seagrape {Coccoloha uvifera), Progreso, Yucatan, by 

 Samuel I[onsliaw, June 24, 1904, and fonvarded to the Bureau of 

 Entomology by Professor Cockerell. Only a fragment of leaf bear- 

 ing a few pupa) is at hand, but the species is so distinct that its 

 recognition from the pupal stage alone will be easy. 



DESCRIPTION. 



Pupa case. — Size 1.25 mm. by 0.85 mm. ; elliptical in outline, mod- 

 erately convex. As seen under hand lens the abdominal segments are 

 quite distinct as transverse ridges. Color dull yellowish; para- 

 sitized specimens brownish black or plumbeous. There is a fairly 

 abundant secretion of wax more or less hiding the insects beneath. 

 The secretion consists of the usual long Avax rods from the compound 

 w^ax pores and a fairly copious secretion of semiflocculent or cottony 

 wax from dorsum of case. There is a secretion all around of a 

 narrow, short rim of fused glassy wax, seen best upon the removal 

 of the more abundant fiocculent secretion, and which largely per- 

 sists on the leaf after removal of case (PI. XI, fig. 2). 



Under the microscope the case is pale yellow to almost colorless. 

 Dorsum of case thickly covered with pores which, however, in the 

 nonparasitized individuals, are made out with some difficulty. On 

 the more central dorsal area, or dorsal disc, the pores are fairly large 

 and scattered promiscuously. The smaller pores occur in a sub- 

 marginal zone all around the case, and just within margin all 

 around is a closely set row of pores somew'hat larger than those on 

 the dorsal disc (PI. XI, fig. 2). The location of these pores is very 

 evident in parasitized pupse (PI. XI, fig. 1), which condition ap- 

 parently produces rather important structural changes in the pores. 

 In the case of the pores on the dorsal disc there is produced from 

 center of pore a short papilla or peg, acute, rounded, or swollen 

 at tip. From each of the smaller pores forming the submarginal 

 zone is produced a short finger-like process. The pores just within 

 margin of case all around show a group of small dark granules 

 surrounded by many minute granulations. In the single parasitized 

 pupa of jamaicensis, constituting the type of this species, are to be 

 noted the same minute finger-like processes from the submarginal 

 zone of pores, but the dorsal pores above mentioned appear to be 

 wanting in jamaicensis, and in comparing the lingulae the species 

 are readily seen to be different. 



Margin and dorsum of case apparently without spines, except a 

 pair on caudal end of case. 



