94 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[304 



A parasite is described by Leger and Duboseq (1903a :312) but not 

 named. It was found on the island of Corsica, in Chaetechelyne vesu- 

 viana Newport. Their statement in full follows : 



"Sur plusieurs individis examines, un seul (d'Ajaccio) etait parasite par une 

 Gregarine recontree seulement au stade de sporadin. Sous cette forme, la Gregarine 

 est allongee et mesure lOOfi. Le deutomerite est, dans sa partie anterieure, plus 

 large que le protomerite dont il atteint 5 ou 6 f ois la longuer, puis il va en s'attenuait 

 pour se terminer en pointe pousse. Ces caracteres ne sont pas suffisants pour rap- 

 porter ces sporadins a un Rhopalonia plutot qu' a un Actinocephalus." 



A third species of indeterminate situation is that called by Balbiani 

 Dactylophorus sp. (1889:41). This species has been discussed in detail 

 under the heading Dactylophorus roiustus (Leger) Labbe, and is illus- 

 trated in Figure 47. 



A fourth species of doubtful position is that described by Kolliker 

 as Gregarina scolopendra (Figure 48). See discussion under Nina gra- 

 cilis Grebnecki. 



POLYCYSTID GREGAEINES IN THE ORTHOPTERA* 



Name of Parasite 

 gregXrinidae 

 Gregarina oblonga Dufour 



Gregarina hyalocephala Dufour 

 Gregarina ovata Dufour 

 Gregarina blattarum Siebold • 



Gregarina locustae Lankester 



Gregarina oviceps Diesing 



Gregarina tnacrocephala (Schn.) Labbe 



Gregarina panchlorae Frenzel 



Gregarina acridiorum Leger 



Gregarina paranensis (Kunckel d' Hercula- 



ris) Watson 

 Gregarina serpentula deMagalhaes 



Name of Host 



Oeipoda stridula 

 Oedipoda migratoriae 

 Gryllus campestris 

 Tridactylus variegatus 

 Forficula auricularia L. 

 Periplaneta orientalis (L.) 

 Periplaneta americana (L.) 

 Blatella germanica (L.) 

 Dissosteria Carolina (L.) 

 Gryllus abbreviatus Serv. 

 Gryllus americana Blatch. 

 Nemobius sylvestris (F.) 

 Gryllus domesticus (L.) 

 Panchlora exoleta Klug 

 Tryxalis sp. 

 Pamphagus sp. 

 Sphingonotus sp. 

 Schistocera paranensis 



Periplaneta orientalis (L.) 



♦The parasites are arranged in chronological order under each genus. 



