73] STUDIES ON GREG ARI NES RAM M 73 



Unnamed Species Keilin 

 1918 Unnamed species Keilin 1918: 406 



Intestine of Oecophora pseudospretella Stain, and Tinea pallescentella 

 Stain. 



Taken at Cambridge, England. 



"Very similar to species here described," above, but a complete life- 

 cycle was not procured, and the specimens left unnamed. 



LIST OF SPECIES FOUND IN THE ORDER DIPTERA OF THE CLASS 



HEXAPODA, 



PARASITE HOST 



GJLEGARINIDAE 



Gregarina longa (Leger) Labb Tipula sp., larva 



Gregarina ctenocephalus Ross Ctenocepkalus serraticeps 



Eirmocystis ventricosa (Lger) Labb6 Tipula oleracea, larv. 



Type species 

 Eirmocystis polymorpha (Le"ger) Labb6 Limnobia sp., larv 



Systenocerus caraboidcs L., larv. 



ACTINOCEPHAIJDAE 



Aclinocephalus tipulae (Hammerschmidt) Tipula oleracea L., larv. 



L6ger Pachyrhina pralensis L., larv. 



Actinocephalus sp. Le"ger Clenophora sp., larv. 



Schneideria caudata (von Siebold) L6ger Sciara nitidicoUis Meig. larv. 



Schneideria mucronata Lger Type species Bibio marci (L.), larv. 



Sckneideria sp. Chironomus sp., larv. 



Stylocystis praecox Leger Type species Tanypus sp., larv. 



Taeniocystis mira Lger Type species Ceratopogon solstitialis Winn., larv. 



Pikocephalus striatus Lger and Duboscq Ptychoptera contaminata, larv. 



Family GREGARINIDAE Labbe 1899: 9 



Genus GREGARINA Dufour 1828 

 GREGARINA LONGA (Leger) Labb6 



[Figure 7] 



1892 Ckpsidrina longa Leger 1892:117 



1899 Gregarina longa Labbe 1899: 11 



1903 Gregarina longa Minchin 1903: 337 



1911 Gregarina longa Wellmer 1911: 114 



Sporonts in pairs, very slender and elongate. Maximum length of 

 sporont 500/z. Width not given. Ratio LP:TL: :1: 10 to 12; WP:WD: : 

 1:1.2. Another form is found in which this ratio exists: LP:TL: :1:7, 

 body less slender. Protomerite of primite well-rounded, deeply con- 

 stricted at septum. Protomerite of satellite flattened at top, constricted 

 in middle. Deutomerite regularly cylindrical, of approximately same 

 width throughout in primite and tapering very slightly in satellite, ending 

 in a broad blunt extremity. Epimerite a simple spherical papilla. Nucleus 

 large, spherical, with one large karyosome. 



