73] 



STUDIES ON GREGARJNES—KAMM 



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 



GREGASINIDAE 



Gregarina longa (L6ger) Labb6 

 Gregarina ctenocephalus Ross 

 Hirmocystis veniricosa (L^ger) Labb6 



Type species 

 Eirmocystis polytnorpha (L^ger) Labb6 



ACTINOCEPHALIDAE 



Actinocephalus tipulae (Hammerschmidt) 



L€ger 

 Actinocephalus sp. L^ger 

 Schneideria caudata (von Siebold) Ldger 

 Schneideria mucronata L^ger Type species 

 Schneideria sp. 



Slylocystis praecox L^ger Type species 

 Taeniocystis mira L^ger Type species 

 Pikocephaliis striatus L^ger and Duboscq 



Tipula sp., larva 

 Ctenocephalus serraticeps 

 Tipula oleracea, larv. 



Limnobia sp., larv 

 Syslenocerus caraboides L., larv. 



Tipuia oleracea L., larv. 



Pachyrhina pratensis L., larv. 



Ctenophora sp., larv. 



Sciara nitidicollis Meig. larv. 



Bibio marci (L.), larv, 



Chironomus sp., larv. 



T any pus sp., larv. 



Ceratopogon solstitialis Winn., larv. 



Ptychoptcra contaminala, larv. 



Family GREGARINIDAE Labbe 1899: 9 

 Genus GREGARINA Dufour 1828 

 GREGARINA LONGA (Leger) Labbe 

 [Figure 7] 

 1892 Clepsidrina 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 

 Bporont 500m. 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. 



