104 ILLINOIS BIOLOGICAL MONOGRAPHS [314 



GREGARINA ACRIDIORUM Leger 



1893 Clepsidrina acridiorum 

 1896 Clepsidrina acridiorum 

 1899 Gregarina acridiorum 



Gregarina: Sporonts biassociative, cylindrical. Maximum length 

 of individual 1000/a; minimum length 400/i, width IQOfi. Ratio length 

 protomerite : total length : : 1 : 5 ; protomerite subglobular in pri- 

 mite, depressed at anterior end in satellite. Deutomerite cylindrical, 

 rounded at posterior end, Sarcocyte thick, especially in protomerite 

 near septum. Endocyte yellow orange. Epicyte longitudinally striated. 

 Myocyte well developed. Nucleus spherical, with many small karyo- 

 somes. Epimerite a simple spherical hyaline button on a short stalk. 



Cysts spherical, 500/a in diameter. Spore ducts 12 to 15 in num- 

 ber, very long, yellow orange at base. Spores extruded in long chains. 

 Spores doliform, 7.6 by Z.^/x. 



Taken at Nemours, Algeria, and in Provence, France. Hosts: Va- 

 rious Acrididae, especially Tryxalis sp. (Truxalis), Pamphagus sp. 

 and Sphingonotus sp. Habitat: Intestine. 



GREGARINA PARANENSIS (Kunckel d'Hereularis) Watson 



1899 Clepsidrina paranensis Kunckel d'Hereularis 1899:622 

 1916 Gregarina paranensis Watson (This paper) 



Gregarina: Sporonts biassociative. Length not given. Deuto- 

 merite four times as long as protomerite. Ellipsoidal, pale yellow. 



The author says the species differs from G. acridiorum Leger in 

 having the deutomerite ellipsoidal instead of cylindrical, and the endo- 

 cyte pale yellow instead of yellowish red. He says between the moults 

 of the insect the parasites are abundant. They diminish in number 

 after each moult. 



Taken at Parana, Argentina. Host: Schistocerca paranensis. 

 Habitat : Intestine. 



GREGARINA SERPENTULA deMagalhaes 



[Figures 185, 186] 



1900 Gregarina serpentula deMagalhaes 1900:140-44 



Gregarina : Sporonts biassociative, slender, elongate. Maximum 

 length association 1200/*, width ISO/j.. Average length 800/*, width 60/x. 



