170 



ILLINOIS BIOLOGICAL MONOGRAPHS 



GREGARINA CUNEATA Stein 

 [Figures 132, 133, 134, 135, 136, 152] 



1838 Clepsidrina polymorpha 



1848 Gregarina cuneata 



1848 Gregarina cuneata 



1851 Gregarina cuneata 



1863 Gregarina polymorpha 



1875 Clepsidrina polymorpha 



var. cuneata 



1899 Gregarina polymorpha 



var. cuneata 



1902 Gregarina cuneata 



1903 Gregarina xylopini 



1904 Gregarina cuneata 



1910 Clepsidrina cuneata 



1911 Gregarina cuneata 

 1914 Gregarina cuneata 



Hammerschmidt 1838 :357 

 Stein 1848 :209-10,222 



Prantzius 1848 :196 



Diesing 1851 :13 



Lankester 1863 :95 



Schneider 



1875 :581 



Labbe 1899 :11 



Berndt 1902 :393-404 



Crawley 1903 :47 

 Leger & Duboscq 1904 :354-5 



Pfeiffer 1910:108 



Ishii 1914:435 



Ishii 1914:435 



Gregarina: Sporonts biassociative, elongate cylindrical. Length 

 380/ia; width 170/A. Ratio length protomerite : total length primite :: 

 1:3; width protomerite : width deutomerite primite : : 1 : 1.5. Pro- 

 tomerite elongate cylindrical, 2i/^ times as wide as posterior portion, 

 dilated at anterior end, widest part acutely angled, apex broadly 

 rounded. Slight constriction at septum. Deutomerite elongate, width 

 gradually increases from septum to posterior portion, terminates in a 

 very broadly rounded extremity. Nucleus spherical, small, with one 

 karyosome. 



Cysts spherical, 240/x in diameter, long spore ducts. Spores ex- 

 truded in chains, doliform, 5.7 by 4/i. 



Taken at Roscoff and Caen, France; Berlin; Philadelphia; and in 

 the province of Izu, Japan. Host : Tenebrio molitor L. larv. and adult. 

 Habitat : Intestine. 



Hammerschmidt described two gregarines from Tenel^rio molitor 

 under one name, Clepsidrina polymorpha. He regarded them as differ- 

 ent shapes assumed by the same parasite. 



Stein said, concerning his discoveries: 



"Ich fand drei verschiedend Formen, von denen zwei zur Gattung Gregarina 

 in engern Sinne, eine zur Gattung Stylorhynchus gehort. Hammerschmidt kannte 

 wahrscheinlich bereits zwei Formen, doch geht dies selbst aus seinen Abbildungen 

 die gar zu roh sind, nicht mit volliger Bestimmtheit hervor; er hielt sie aber fiir 

 eine Art und nannte sie Clepsidrina polymorpha." 



Stein's figure is reproduced in Figure 133. 



