Adeleorina is a suborder of Apicomplexa

Apicomplexa

The Apicomplexa are a large group of protists, most of which possess a unique organelle called apicoplast and an apical complex structure involved in penetrating a host's cell. They are unicellular, spore-forming, and exclusively parasites of animals. Motile structures such as flagella or...

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Blood parasites belonging to the suborder Adeleorina are collectively known as haemogregarines. Currently their sister group is thought to be the piroplasms.

Suborder Adeleorina has ~400 species and has been organised into four large and 4 small taxa.

The larger taxa are:

• family Haemogregarinidae - taxon created by Neveu-Lemaire in 1901

genera:

• Haemogregarina
  Haemogregarina
  Haemogregarina is a genus of haemoprotozoans, parasitic mainly on cold-blooded vertebrates. They are unicellular organisms which are parasitic in the red blood cells.-History:...
  
  - taxon created by Danilewsky in 1885
• Cyrilia
  Cyrilia
  Cyrilia is a genus of parasitic protoza in the phylum Apicomplexia. The genus was created by Lainson in 1981. Species in this genus infect fresh water fish and are transmitted by leeches.-Life cycle:...
  
  - taxon created by Lainson in 1981

• family Karyolysidae - taxon created by Wenyon in 1926

genera:

• Karyolysus
  Karyolysus
  Karyolysus is a genus of coccidia. With the exception of K. sonomae whose vertebrate host is the yellow legged frog species in this genus only infect lizards of the genus Lacerta.-History:...
  
  - taxon created by Labbe in 1894

• family Hepatozoidae - taxon created by Wenyon in 1926

genera:

• Hepatozoon
  Hepatozoon
  Hepatozoon is a genus of Apicomplexan protozoa which incorporates over 300 species obligate intraerythrocytic parasites. Species have been described from all groups of tetrapod vertebrates, as well as a wide range of haematophagous arthropods, which serve as both the vectors and definitive hosts of...
  
  - taxon created by Miller in 1908

The smaller genera are :

• Hemolivia
  Hemolivia
  Hemolivia is a genus of the phylum Apicomplexia.-History:This genus was described in 1990 by Petit et al.The type specis is Hemolivia stellata.-Characteristics of the genus:...
  
  - taxon created by Petit et al. in 1990
• Desseria - taxon created by Siddall in 1995

• family Dactylosomatidae

genera:

• Dactylosoma
  Dactylosoma
  Dactylosoma is a genus of parasitic protozoa of the phylum Apicomplexia.Species in this genus have two hosts in their life cycle: the vertebrate host is a fish and the invertebrate host is a leech.-Description:...
  
  
• Babesiosoma
  Babesiosoma
  Babesiosoma is a genus of parasitic protozoa in the phylum Apicomplexia.They have two hosts in their life cycle: the vertebrate hosts are fish and the invertebrate vectors are leeches.This genus has been poorly studied and little is known about it....
  
  

Notes:

Species of the genus Desseria infect fish and lack erythrocytic merogony.

The species of the genera Dactylosoma and Babesiosoma infect fish

Fish

Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups...

 and reptile

Reptile

Reptiles are members of a class of air-breathing, ectothermic vertebrates which are characterized by laying shelled eggs , and having skin covered in scales and/or scutes. They are tetrapods, either having four limbs or being descended from four-limbed ancestors...

s.
Leech

Leech

Leeches are segmented worms that belong to the phylum Annelida and comprise the subclass Hirudinea. Like other oligochaetes such as earthworms, leeches share a clitellum and are hermaphrodites. Nevertheless, they differ from other oligochaetes in significant ways...

es are the only known vectors for these species and their vertebrate

Vertebrate

Vertebrates are animals that are members of the subphylum Vertebrata . Vertebrates are the largest group of chordates, with currently about 58,000 species described. Vertebrates include the jawless fishes, bony fishes, sharks and rays, amphibians, reptiles, mammals, and birds...

hosts are aquatic.