146 
PACIFIC SCIENCE, Vol. XI, April, 1957 
Fig. 3- Trialeurodes vaporariorum Westw. Pupal case, 
dorsal. 
form orifice (Fig. 4c) 0.056-0.076 mm. long, 
0.056-0.070 mm. wide, cordate, notched at 
posterior tip and with prominent tooth in 
notch. Operculum 0.036-0.048 mm. long and 
0.044-0.060 mm. wide, cordate. Lingula 
0.040-0.060 mm. long, 0.024-0.032 mm. 
wide, with two long setae and three pairs of 
lateral lobes and one median unpaired lobe. 
Caudal furrow present narrow. 
adult: Female , antennae (Fig. 5 a) with 
segment 3 shorter than segments 4-6 com- 
bined, 5 nearly twice as long as 6, flagellum 
of 7 short. Wings white unspotted, forewing 
1.0 mm. long, Ri absent. Hind tibiae with 
13-16 setae in comb. Male, operculum (Fig. 
5 b) 0.02 mm. long, 0.045 mm. wide. Lingula 
truncate and excavate apically, length 0.03 
mm., width 0.01 mm. Penis (Fig. 5c) length 
0.1 mm., tapering and slightly falcate at apex 
in lateral view. 
food plants: Recorded by Maskell from 
Pittosporum eugenioides and Geniostoma sp. Com- 
mon on tomato and other plants. 
material: A slide of papillifer (dated 1889> 
W. M. M.) stained and remounted by the 
U. S. Bureau of Entomology in the Maskell 
collection. 
A cosmopolitan species. 
Genus Asterochiton Maskell 
The generic prescription of Quaintance and 
Baker (1914: 98) and Sampson (1943: 208) 
must be amended as follows: 
Medium in size, subelliptical to sub- 
b 
0,05 mm. 
— — — H 
Fig. 4. Trialeurodes vaporariorum Westw. Pupal case: 
a , Margin; b, thoracic tracheal pore; c, vasiform orifice 
and caudal margin. 
