BIOTIC ASSOCIATIONS OF COCKROACHES — ROTH & WILLIS 317 



that had been stuck together by a thysanopteron, Anaphothrips sp. 

 He pointed out that the ootheca would not adhere to leaves that were 

 not stuck together but would fall to the ground. 



Sein {in Rehn and Hebard, 1927) in Puerto Rico found Aglaop- 

 tcryx fades in abandoned cocoons of Megalopyge kriigii (Dewitz) 

 and in leaves webbed together by caterpillars and in abandoned spiders 

 nests. Wolcott (1950; and in Rehn and Hebard, 1927) also found 

 A. fades in the empty cocoons of M. krugii and in the larval tents of 

 Tetralopha scabridella Ragonot on Inga vera (coffee shade tree) ; and 

 "Where there are no butterfly-nests, it lives in abandoned spider-nests 

 on the leaves of other forest trees." Cotton (in Wolcott, 1950) found 

 the type of Aglaoptcryx absiniilis also living in the abandoned cocoon 

 of M. krugii on bucare trees in Puerto Rico. Wolcott (1950) re- 

 ported that Plectoptera dorsalis, Plectoptera infulata, and Plectoptcra 

 rhahdota have been found living in trees between leaves or in "butter- 

 fly-nests" of Tetralopha scabridella in leaves of Inga vera, or nests of 

 Pilocrocis secernalis (Moschler) in the leaves of Petitia domingensis 

 in the mountains of Puerto Rico. Sein {in Rehn and Hebard, 1927) 

 had collected P. rhahdota in the nest of larvae of T. scabridella. 



Wolcott (1950) reported that Nyctibora lutzi had been found in a 

 large rotten stump associating with " 'come j en' termites [Nasutitermes 

 costalis (Holmgren) ], yellow wood-ants and rhinoceros beetle grubs." 

 Rehn and Hebard (1927) found S'miblcrastes jamaicanus in numbers 

 in the debris of an abandoned termites' nest in Jamaica: "To what 

 extent the species is dependent upon the protection of the termite or 

 other structures remains to be determined." 



In Virginia Cryptocercus punctulatus has been found living in the 

 same galleries with Reticuliteruies sp., and on the Pacific Coast it has 

 been found occupying the same log with Termopsis sp. (Cleveland et 

 al., 1934). 



Shelford (1909) found one male and one female of Balta platysov.m 

 in a nest of a spider of the genus Phryganoporiis and assumed a sym- 

 biotic association. Chopard (1924) recoxde^d Marcta acutivcntris hora 

 empty nests of spiders on Barkuda Island, India ; nothing is known 

 of the relationships, if any, between these cockroaches and spiders. 



Chopard (1924c) found Margattea sp. in the nest of the ant 

 Acropyga acutiventris Roger ; he also found Margattea sp., Peri- 

 planeta sp., Polyphaga indica, and Temnopteryx obliquetntncafa in 

 deserted termite mounds in India. However, he believed that none of 

 these species were more than accidental associates of the host insects ; 

 he considered them hygrophilous cockroaches which had found a re- 

 treat in the nests. 



