ILLINOIS BIOLOGICAL MONOGRAPHS 



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The species of parasites among the Stenophoridae do not appear to 

 be as widely distributed, i. e. as cosmopolitan, as do those of other grega- 

 rines, e. g. of the genus Gregarina, widely separted localities seemingly 

 yielding different parasites from the same host or from closely allied 

 hosts. It is true, however, that much less work has been done in differ- 

 ent parts of the world on the diplopod parasites than on those of the 

 beetles and Orthoptera. 



One is led to believe that each family of gregarines has its unique 

 order or narrowly restricted orders of insects which it infects and that 

 each genus of gregarine is confined to a single host or to very closely re- 

 lated species. 



POLYCYSTID GREGARINES IN THE CHILOPODA* 



Name of Parasite 

 dactylophoridae 

 •Dactylophorus robustus Leger 



Nina gracilis Grebnecki 



Nina giardi (Leger) Sokolow 



Nina giardi corsicutii (Leger and Duboscq) 



Sokolow 

 Nina indicia Merton 

 Echinomera hispida (Schneider) Labbe 



Echinomera horrida (Leger) Watson 

 Acutispora macrocephala Crawley 

 Trichorhynchus pulcher Schneider 



Rhopaionia geophili Leger 

 Rhopalonia stella Leger 



ACTINOCEPHALIDAE 



Actinocephalus striatus Leger and Duboscq 

 Actinocephalus dujardini Schneider 

 Amphorocephalus amphorellus Ellis 

 Hoplorhynchus actinotus (Leidy) Crawley 

 Hoplorhynchus scolopendras Crawley 



SPECTES OF UNCERTAIN DETERMINATION 



Trichorhynchus lithobii Crawley 



Name of Host 



Cryptops hortensis Leach 

 Cryptops anomalous lusitanus Verh. 

 Scolopendra dngulata (Latr.) 

 Scolopendra oraniensis 

 Scolopendra oraniensis lusitanica 

 Verh. 



Scolopendra subspinipes Leach 

 Lithobius forficatus Linn. 

 Lithobius coloradensis Cock. 

 Lithobius calcaratus Koch 

 Lithobius forficatus Linn. 

 Scutigera forceps (Raf.) 

 Scutigera sp. 



Himantarium gabrielis Linn. 

 Stigmatogaster gracilis Mein. 

 Himantarium gabrielis Linn. 



Scolopendra cingulata Latr. 

 Lithobius forficatus Linn. 

 Scolopendra heros Giard 

 Scolopocryptops sexspinosus (Say) 

 Scolopendra woodi Meinert 



OTHER SPECIES UNNAMED 



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



