Ticks and Tick-Borne Diseases of Colorado, Including New State Records for Argas radiatus (Ixodida: Argasidae) and Ixodes brunneus (Ixodida: Ixodidae)

H Joel Hutcheson,  James W Mertins,  Boris C Kondratieff,  Monica M White Journal of Medical Entomology, tjaa232, 09 November 2020 Article history


We report 28 species of ticks (Acari: Ixodida) from Colorado (CO).

We include the soft ticks (Argasidae):

Argas (Argascooleyi Kohls and Hoogstraal, Argas (Persicargasradiatus Railliet, Carios (Alectorobiusconcanensis (Cooley and Kohls), Carios (Alectorobiuskelleyi (Cooley and Kohls), Ornithodoros(Pavlovskyellahermsi Wheeler et al., Ornithodoros (Pavlovskyellaparkeri Cooley, Ornithodoros (Pavlovskyellaturicata (Dugès), Otobius (Otobiuslagophilus Cooley and Kohls, and Otobius (Otobiusmegnini (Dugès).

We include the metastriate hard ticks (Ixodidae) Dermacentor (Americentoralbipictus (Packard), Dermacentor (Dermacentorandersoni Stiles, Dermacentor (Dermacentorparumapertus Neumann, Dermacentor (Dermacentorvariabilis (Say), Haemaphysalis (Aboimisalischordeilis (Packard), Haemaphysalis (Gonixodesleporispalustris (Packard), and Rhipicephalus (Rhipicephalussanguineus Latreille.

Prostriate hard ticks include Ixodes (Ixodiopsisangustus Neumann, Ixodes (Phoeloioxdesbaergi Cooley and Kohls, Ixodes (Trichotoixodesbrunneus Koch, Ixodes (Scaphixodeshowelli Cooley and Kohls, Ixodes (PhoeloioxdeskingiBishopp, Ixodes (Phoeloioxdesmarmotae Cooley and Kohls, Ixodes (Ixodiopsisochotonae Gregson, Ixodes (Phoeloioxdessculptus Neumann, Ixodes (Ixodiopsissoricis Gregson, Ixodes (Ixodesspinipalpis Hadwen and Nuttall, Ixodes(Phoeloioxdestexanus Banks, and Ixodes (Ixodiopsiswoodi Bishopp. Argas radiatus and Ixodes brunneus represent new state records.

Review of collection reports revealed that inclusion of Ixodes (Multidentatusauritulus (Neumann), Ixodes (Phoeloioxdescookei Packard, Ixodes (Phoeloioxdesmarxi Banks, and Ixodes (Ixodespacificus Cooley and Kohls is dubious or unconfirmed and, conversely, that C. concanensis and H. chordeilis have distributions that include CO.

We list an additional five species occasionally detected and 13 exotic species intercepted in CO.

Tick-host associations, geographical distributions, and medical/veterinary importance are included.

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