ALEURODICUS (mETALEURODICUS) MINIMUS. 77 
The color is a light greenish brown. 
Adult. — The adults are greenish yellow in color. The vertex is 
shaded on either side with dusky. The compound eyes are brownish- 
black and the ocelli clear and surrounded by a conspicuous Indian- 
red area. The thorax is marked with black, which is arranged in 
more or less broken transverse bands, which sometimes appear as 
mere spots. Abdomen generally unmarked. Vasiform orifice with 
the operculum and lingula blackish. Forewings (PI. XXVII, fig. 5) 
shaded all over with dusky, giving the wing a smoky look excepting 
a line representing the cubitus, which is clear, unshaded. Near their 
tips the veins E 1? R s , and M are somewhat swollen and clouded, and 
just at the radial fork below R s there is a conspicuous dark spot. 
The radial forks in the wing are very long, the length of R s being 
half as long again as the distance between the radial fork and the 
insertion of the media. The antennae are absent from the specimens 
at hand. 
Male: Length 1.12 mm.; length of forewing 1.1 mm.; width 0.56 
mm.; claspers (PL XXVII, fig. 9) 0.14 mm.; hind tibiae 0.32 mm.; 
greatest width of genital segment 0.16 mm. 
Female: Length 1.4 mm.; length of forewing 1.4 mm.; width 
0.672 mm. Lingula of vasiform orifice very large, exserted, and 
rounded (PL XXVII, fig. 10). 
Aleurodicus (Metaleurodicus) minimus Quaintance. 
(PL XXVIII, figs. 1-10; PI. XXIX, fig. 3.) 
Aleurodicus minima Quaintance, Tech. Ser. 8, Div. Ent., U. S. Dept. Agr.. 
]). 47 (1900). 
ORIGINAL DESCRIPTION. 
Pupa-case. — Size about 1.17 by 0.71 mm., subelliptical, many specimens are 
somewhat narrowed cephalad. Case usually widest across region of second 
abdominal segment. Color yellowish, varying to brownish. Empty case semi- 
transparent, except for the irregular brown coloration on margin, and at 
the dorsal pores. Margins slightly crenulated, with very shallow indentures 
between the lateral wax tubes. There is no marginal rim. Just within the 
margin, all around, is a closely set row of short disk-like tubercles or papillae, 
from which is produced a fringe of almost straight, tapering, glassy waxen rods 
from one-third to one-half as long as pupa-case is wide. On the more central 
dorsal region a light mealy waxen exudation may occur. Pupa-case slightly 
raised from surface of leaf by vertical fringe of wax, which usually remains 
attached to leaf on removal of dried specimens. On the dorsum, nearer the 
margin than center, is a row on each side of seven round and well-defined com- 
pound pores. Considered transversely, these occur in pairs; a pair on cephalic 
segment; a pair on metathorax; three pairs along the abdominal segments, and 
two pairs in the region latero-caudad of the vasiform orifice. The caudal pair 
is somewhat the largest, with the cephalic pair next in size ; the rest are sub- 
