CLASSIFICATION. 
19 
Family ALEYRODIDiE Westwood. 
Small or minute insects; oviparous, eggs stalked; metamorphosis 
intermediate; larval stages (except first) quiescent upon leaves of 
plants; most species surrounded or covered with a waxy secretion. 
Mature sexes with four wings which are transparent, white, clouded 
or mottled with spots or bands. Antennae in most genera of seven 
segments; compound eyes single or divided (reniform) ; ocelli two. 
Tarsi of two segments, terminating in two claws and a median process 
or paronychium; mouthparts suctorial, labium long, 3-segmented, 
ALEYf^ODID^l 
APHIDIDA 
1/ 
C0CCID/5L 
Fig. 1. — Genealogical diagram of the Aleyrodidae. (Original.) 
seta? four; male genitalia a pair of prominent claspers; female geni- 
talia an acute ovipositor. Anus opening dorsally at the so-called 
" vasiform orifice." 
Subfamilies of the Aleyeodid.e. 
A. Forewing with radinsi, radial sector, media, cubitus, and anal veins present. 
Vertex produced I. Udamoselince. 
B. Forewing with radial sector and media present; radiusi absent or present; 
paronychium spine-like II. Aleurodicinw n. subfam. 
C. Forewing with radial sector and cubitus present ; radiusi absent or present ; 
paronychium blade-like III. Alcyrodinw. 
