Tech. Series 27, Bureau of Entomology, U. S. Dept. of Agriculture. 



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Anatomical Details in the Aleyrodid/e. 



Fig. 1.— Male reproductive organs: Ts, testis; Vd, vas defereus; Sv, seminal vesicle; GdM, 

 glandula mucosa; Ejd, ejaculatory duct. Fig. 2.— Digestive tract: Sg, salivary glands; Ph, 

 pharynx; Or.v, oesophagus; GCa, gastric csrca; An, aims; Lin, lingula. Fig. 3.— Labium of 

 Alcy'rodcs sp. Fig. 4. — Taste sensoria on 1()1)C of apex of labium. Fig. 5.— N'asiform orilico, 

 ventral view: A n, anus; Op, operculum; Lin, lingula. Fig. 6.— Diagi-am of genital segment 

 of male Psylla: Sa, supraanal plate: Co, copulatorv organ: Cla, claspers; Sbg, subgenilal 

 plate. Fig! 7.— Diagram of genital segment of male Altiirodicus: Sa, supraanal plate; Co, 

 copulatory organ; Cte, claspers; 56?, subgenital plate. (Original.) 



