12 ILLINOIS BIOLOGICAL MONOGRAPHS [222 



Part I BIOLOGY 



THE HOSTS INFECTED 



Gregarines infect only invertebrates and they have been reported 

 from the following phyla : Coelenterata, Echinodermata, Platyhelmin- 

 thes, Coelhelminthes (Archianellidae, Gephyrea, Hirudinea, Annelida 

 Polyehfeta and Oligochaeta), Arthropoda, (Crustacea, Onycophora, My- 

 riapoda, Hexapoda, and Arachnida), Mollusca and Chordata (Enter- 

 opneusta and Tunicata). Thus far the only groups below the verte- 

 brates from which gregarines have not been reported are the phyla Roti- 

 fera, Porifera, and Protozoa, and the sub-phylum Leptocardii. 



Partial List of Animals Examined for Gregarines 

 Number examined Number parasitized 



Myriapoda 



Sciitigcra sp. lO o 



Scolopcndra sp. S o 



Scolopocryptops sc.rsptiiosus lo 2 



Lithobius sp. 15 6 



Geophilus sp. 15 o 



Euryurtis cry thro pygtis 2 2 



Callipits lactarius 24 20 



Parajulus impressus 30 25 



Polydesmiis virginiensis 6 o 



Spiribolus utargiuatus 6 o 



Julns sp. 10 o 



Hemiptera 

 Reduvius sp. 10 o 



Many unidentified o 



Diptera 

 Musca doincstica 10 O 



Unidentified larvae 50 o 



Neuroptera 

 Damsel fly larvae 15 o 



Dragon fly larvae 30 S 



Lepidoptera 

 Many unidentified larvae O 



