THE CAMPHOR SCALE 



9 



plainly visible. The reproducing scale shows a purple-brown color, 



and has two characteristic white patches on the ventral side (fig. 5). 



In the first instar the male is indistinguishable from the female, 



but during the second instar the male becomes elongated and the 



Figure 4. — Detailed view of camphor-tree twig heavily infested with the camphor scale. 



Enlarged 9 times. 



covering oblong-elliptical. The covering does not increase in size 

 after the second molt, although the male makes four molts in all. The 

 adult male (fig. 6) is a small two-winged insect rarely noticed by the 

 casual observer. 



144717°— 35 2 



