2 LEAFLET 144, U. S. DEPARTMENT OF AGRICULTURE 



largest; it is from 1% to 2 inches long when full-grown. It is light 

 brown. All of the adults have long, powerful, reddish -brown wings. 



Figure 2.— The Australian cockroach: a, Male with wings spread; b, female; c, nymph. All life size. 



The Australian cockroach (Periplaneta australasiae F.) (fig. 2) 

 resembles very closely the American cockroach, but is seldom more 



Figure 3.— The oriental cockroach: a. Female; b, male; c, side view of female; d, half-grown specimen. All 



natural size. 



than 1 % inches long and is easily identified by a bright-yellow heavy 

 line on the outer edge of the basal half of the wing. 



