148 



Thoracic Scales. (i) Hair-like curved; (2) narrow 

 curved ; (3) spindle shaped ; (4) flat ; (5) twisted 

 (Fig. 56). 



In the sub-family Anophelina examine the genus 

 Myzomyia, e.g., M. funesta or M. listoni, and note that 

 the thoracic scales are hair-like curved scales ; and again 

 the genus Pyretophorus (e.g., P. costalis or P. jeyporensis), 

 and note that the thoracic scales are narrow curved. 



In the sub-family Culicina examine (a] the genus 

 Stegomyia (e.g., S. calopus, v. fas data), and note that 

 it has flat scales on the scutellum ; (b) the genus Culex 

 (e.g., C. fatigans), with narrow curved scales on the 

 scutellum ; (c) the genus Mucidus (e.g., M. africanus), 

 with twisted scales on the thorax, giving these mos- 

 quitoes their peculiar mouldy appearance. 



Abdominal Scales. In the sub-family Anophelina, 

 the abdomen is generally hairy. Examine the genus 

 Cellia (e.g., C. pharoensis or C. pulcherrima) and note 

 that it has spindle-shaped scales on the abdomen and 

 dense lateral tufts, and that the genus Pyretophorus 

 (e.g., P. costalis or P. palestinensis) has narrow curved 

 scales on the abdomen (Fig. 58). 



Wing Scales. Flat scales occur in a double row 

 along each vein and there are also lateral rows. 

 These scales are most variable, e.g., in the sub-family 

 Anophelina examine the genus Cycloleppteron (e.g., C. 

 grabhamia), with large inflated scales (Fig. 58), and the 

 genus Myzomyia (e.g., M. funesta) with small, narrowly 

 lanceolate scales, and the genus Myzorhynchus (e.g., 

 M. paludis), with dense large lanceolate scales. In 

 the sub-family Culicina examine Mansonia (= Pano- 

 plites), e.g., M. uniformis, or M. titillans ; the scales 

 have a characteristic broad asymmetrical shape 

 (Fig. 56). 



