BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 339 



Periplaneta americana on a quarter-boat. They also noted that the 

 forficuHd Marava \_ = Prolahia] arachidis (Yersin) appeared in 

 numbers in a kitchen after dark accompanied by swarms of P. ameri- 

 cana. These workers also found Leurolestes pallidus in a fruit store 

 in Key West "where the species was common in a pile of old burlap 

 bags and in cracks under the stands which it shared with one fairly 

 large colony of Blattella germanica, occasional specimens of Holo- 

 compsa nitidula, a few specimens of Periplaneta americana, and one 

 specimen of Supella supellectilium." They also found H. nitidula with 

 Blaberus craniifer "between old boards in a woodshed, where nymphs 

 were more numerous than adults." 



Rehn and Hebard (1914) stated of Supella supellectilium in Florida 

 that "The females were all taken in cupboards where Blattella ger- 

 manica was found in swarms." The association in human habitations 

 of .S. supellectilium and B. germanica has been reported also by Sein 

 (1923), Puerto Rico; Shaw (1924), Australia; Mallis (1954): 

 "German and brownbanded roaches were often found in the same 

 crevice."; Anonymous (1958), Texas; and Anonymous (1958a), 

 Georgia. Gould and Deay (1940) stated that other species of cock- 

 roaches, especially B. germanica, may be found with S. supellectilium 

 in the same part of a building. Yet Shaw (1925) stated that "when 

 Supella supellectilium Serv. invades places already occupied by Blat- 

 tella germanica L., it tends to oust the latter." 



Blaberus discoidalis has been found in homes or in fruit debris in 

 Puerto Rico in company with the more common, domiciliary species 

 Leucophaea maderae, but never in abundance (Sein, 1923; Wolcott, 

 1950). Illingworth (191 5) in Hawaii found Symploce hospes asso- 

 ciated with Nauphoeta cinerea, Graptoblatta notulata, and Diploptera 

 punctata. 



Hebard (1917) found Aglaopteryx diaphana in a bromeliad on a 

 forest tree in Jamaica together with Nyctihora laevigata and numerous 

 Cariblatta insularis. He also found numerous Aglaopteryx gemma 

 under signs on long-leaf pines in Alabama with occasional specimens 

 of Parcoblatta lata. In Virginia he found Parcoblatta uhleriana in a 

 decaying chestnut log with Cryptocercus punctulalus. In Florida he 

 found Latiblattella rchni with Eurycotis floridana and, more rarely, 

 with Periplaneta australasiae under bark of pine trees. In Key West 

 he found Symploce hospes in the cupboard of a hotel with swarms of 

 Blattella germanica and a few Supella supellectilium. 



Rehn and Hebard (1927) in their study of West Indian blattids 

 reported finding Neoblattella proserpina in epiphytic bromeliads in 



