38 



ARTHROPODA 



Walking Sticks. The walking sticks (Phasmidce) are 

 so called because of their resemblance to a twig. Our 

 common one (Diapheromera femorata) occasionally be- 

 comes so numerous as to 

 strip all the foliage from 

 acres of forests. 



Cockroaches. Of the 

 four common species of 

 roaches (Blattidce) two are 

 household pests imported 

 from Europe. The large 

 black roach (Periplaneta 

 orientalis) frequents sugar 

 refineries, slaughter- 

 houses, and bake-shops. 

 The Croton bug (Ectobia 

 germanicd) is common in 

 kitchens. Roaches are 

 omnivorous. They feed 

 clothing, bookbind- 

 breadstuffs, and 

 living insects, such as 

 bedbugs. Ships some- 

 times become so badly 

 infested with roaches that 

 the sailors wear gloves 

 while sleeping to prevent 



on 



FIG. 13. Large black roach. Photograph 

 nearly twice natural size. 



the insects from gnawing 

 their fingers. The eggs are inclosed in bean-shaped packets 

 and may be seen hanging fast to the abdomen of the 

 female or found in protected crevices. 



