64 MISC. PUBLICATION 336, U. S. DEPT. OF AGRICULTURE 
The external characters and the terminology of the parts employed 
in the descriptions of adult mosquitoes are shown in figures 14, 15, 
and 16. 
Mesonotura 
Scutelurn 
"Abdorme 
<—+-—-—---—---- /lesonotur 
eS =—===——= Base of} Wing 
ae ————————————— —Scutel/urm 
Afar Ty 
Se eS Lost 7107urn 
SSS > oe oe ae Halter 
—----—--- /°7 abdominal segment 
B 
FIGURE 15.—A, Composite diagram of thorax of adult mosquito, showing the 
groups of pleural bristles: apn, Anterior pronotal (prothoracic) ; ppn, posterior 
pronotal (proepimeral) ; ppl, propieural (prosternal); sp, spiracular; psp, 
postspiracular; pa, prealar; stp, sternopleural; wme, upper mesepimeral; Ime, 
lower mesepimeral. 8B, Posterior portion of thorax from above. 
