CLASSIFICATION. 



19 



Family ALEYRODID^E 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. Antennoe in most genera of seven 

 segments; compound eyes single or divided (reniform) ; ocelli two. 

 Tarsi of two segments, teiininating in two claws and a median process 

 or paronychium; mouthparts suctorial, labium long, 3-segmented, 



^^Sli^'^^ 



COCCIDAL 



Fio. 1. — Genealogical diagram of the AleyrodidiP. (Original.) 



setfc 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 Aleyrodid.e. 



A. Forewing with radiusi, radial sector, media, cubitus, and anal veins present. 



Vertex produced I. Udamosclinw. 



B. Forewing with radial sector and media present ; radiusi absent or present ; 



paronychium spine-like II. Alcurodicince n. subfam. 



C. Forewing with radial sector and cubitus present ; radiusi absent or present ; 



paronj'chium blade-like III. Alcyrodiim. 



