title: A new species of Ornithodoros (Acari: Argasidae), parasite of Microlophus spp. (Reptilia: Tropiduridae) from northern Chile.
abstract: A new species, Ornithodoros microlophi (Acari: Argasidae), belonging to the subgenus Alectorobius is described from larvae collected on the lizards Microlophus atacamensis (Donoso-Barros, 1966) and Microlophus quadrivittatus (Tschudi, 1845) (Squamata: Tropiduridae) in continental and insular localities from northern Chile. Larvae of O. microlophi can be distinguished from other Neotropical species of the genus Ornithodoros by a combination of the following characters, namely 10 pairs of ventral setae, venter with 6 pairs of sternal setae, dorsal plate pyriform, 19-21 pairs of dorsal setae (typically 20), 13 pairs are dorsolateral and 7 pairs are central, and hypostome with dental formula 4/4 in medial portion and apex pointed. Phylogenetic analysis of 16S rDNA sequences suggests that O. microlophi represents an independent lineage within Neotropical species of the Argasidae.
authors.affiliation: Facultad de Veterinaria, Universidad de la República, Uruguay. jvenzal@unorte.edu.uy
authors.forename: José M
authors.initials: JM
authors.lastname: Venzal
authors.forename: Santiago
authors.initials: S
authors.lastname: Nava
authors.forename: Daniel
authors.initials: D
authors.lastname: González-Acuña
authors.forename: Atilio J
authors.initials: AJ
authors.lastname: Mangold
authors.forename: Sebastián
authors.initials: S
authors.lastname: Muñoz-Leal
authors.forename: Paula
authors.initials: P
authors.lastname: Lado
authors.forename: Alberto A
authors.initials: AA
authors.lastname: Guglielmone
mesh_terms: D000818:Animals; D002677:Chile / Q000453:epidemiology; D026861:Ornithodoros / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics* / Q000502:physiology; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012104:Reptiles / Q000469:parasitology*; D013045:Species Specificity; D013984:Tick Infestations / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*
chemical_list: D012336:RNA, Ribosomal, 16S