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Herpetomonas trimorpha sp. nov. (Trypanosomatidae, Kinetoplastida), a parasite of the biting midge Culicoides truncorum (Ceratopogonidae, Diptera)

Lenka Zídková^1,3, Ivan Cepicka², Jan Votpka¹ and Milena Svobodová¹

¹ Department of Parasitology, Charles University in Prague;
² Department of Zoology, Charles University in Prague

³ E-mail: murfar{at}seznam.cz

Monoxenous trypanosomatid Herpetomonas trimorpha sp. nov. was isolated from the digestive tract of the biting midge Culicoides truncorum (Ceratopogonidae, Diptera). This species forms three distinct morphotypes in culture; the small promastigote, the microflagellate promastigote, and the long promastigote. The last form is unique for the newly described species. Phylogenetic analyses of SSU rRNA and gGAPDH genes showed that H. trimorpha sp. nov. is the closest relative of H. ztiplika, another monoxenous trypanosomatid isolated from biting midges. However, morphological and RAPD analyses confirmed that Herpetomonas trimorpha sp. nov. is distinct from H. ztiplika.