title: Two new species of trypanosomatid parasites isolated from Heteroptera in Costa Rica.
abstract: Two new trypanosomatid species (Euglenozoa, Kinetoplastea) isolated from the intestinal tract of heteropteran insect hosts were described based on molecular phylogenetic analyses of Spliced Leader (SL) RNA gene repeats, glycosomal glyceraldehyde phosphate dehydrogenase, and small subunit ribosomal RNA genes, as well as by morphology. Leptomonas barvae n. sp., from a mirid host Collaria oleosa, was found to represent one of the closest monoxenous (one host) relatives of the dixenous (two hosts) parasitic genus Leishmania. This finding further supports the origin of these dixenous parasites from monoxenous progenitors in the Neotropics. Blastocrithidia largi n. sp., from a largid host Largus cinctus, is among a few members of this genus available in culture. The species is a close relative of Blastocrithidia triatomae and is a member of a new monophyletic phylogenetic group characterized by formation of straphanger cysts.
authors.affiliation: Department of Biology, University of California, Riverside, CA 92521, USA. maslov@ucr.edu
authors.forename: Dmitri A
authors.initials: DA
authors.lastname: Maslov
authors.forename: Vyacheslav Y
authors.initials: VY
authors.lastname: Yurchenko
authors.forename: Milan
authors.initials: M
authors.lastname: Jirků
authors.forename: Julius
authors.initials: J
authors.lastname: Lukes
mesh_terms: D000818:Animals; D016000:Cluster Analysis; D003364:Costa Rica; D016054:DNA, Protozoan / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D041981:Gastrointestinal Tract / Q000469:parasitology; D020459:Genes, rRNA; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases / Q000235:genetics; D020062:Heteroptera / Q000469:parasitology*; D008853:Microscopy; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008969:Molecular Sequence Data; D010802:Phylogeny; D015800:Protozoan Proteins / Q000235:genetics; D016053:RNA, Protozoan / Q000235:genetics; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D020038:RNA, Spliced Leader / Q000235:genetics; D017422:Sequence Analysis, DNA; D014345:Trypanosoma / Q000145:classification* / Q000166:cytology / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D016054:DNA, Protozoan; D004275:DNA, Ribosomal; D015800:Protozoan Proteins; D016053:RNA, Protozoan; D012337:RNA, Ribosomal, 18S; D020038:RNA, Spliced Leader; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases