BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 63 



piles of moist dead leaves and rotten logs in oak-hickory forest (Can- 

 trail, 1943). 



T^jira^.— Captured in molasses traps in moist woods of maple, oak, 

 and pine with much undergrowth and a heavy layer of duff ; in open, 

 rather dry woodlot of Spanish oak and other trees ; and in low wet 

 woods of willow and oak along creek (Hebard, 1943a). 



Parcoblatta zebra 



Indiana. — Beneath log in cypress swamp (Blatchley, 1920). 

 Louisiana and Mississippi. — In decay cavity in sweet gum; under 

 sign on shortleaf pine (Hebard, 1917). 



Parcoblatta spp. 



Alabama.— In the dry wall of a sweet-gum stump together with 

 serropalpid and tenebrionid beetles (Snow, 1958). 



Ohio. — Oothecae under loose bark of fallen trees, where as many 

 as 184 oothecae were found within a few feet of each other; others 

 found under boards and in piles of firewood (Edmunds, 1952). 



Pelmatosilpha coriacea 



Puerto Rico. — Mona Island, under bark of dead trees and under 

 guava leaves (Ramos, 1946). Under bark of Sideroxylon foetidissi- 

 mum (Wolcott, 1941). Common along the coast and in mountains, 

 "Very much at home" under the loose bark of Sideroxylon foetidissi- 

 mum (Wolcott, 1950). 



Pelmatosilpha kevani 

 Trinidad. — Under debris in bush (Princis and Kevan, 1955). 



Pelmatosilpha purpurascena 

 Dominica. — In decaying logs in forest (Rehn and Hebard, 1927). 



Periplaneta americana 



Bermuda. — Among and under decaying debris, just above high-tide 

 line (Verrill, 1902). 



Johnson Island. — Nocturnal, coming out at night in great numbers 

 about Tribulus blossoms. Under timbers on French Frigate Shoals 

 (Bryan, 1926). 



United States.— AWeywdiys and yards may be overrun during the 

 summer; adults and hundreds of nymphs found in decaying maple 

 trees along residential street (Gould and Deay, 1938, 1940). Around 



