pacific coast tick

Dermacentor occidentalis

Member of dog ticks (genus Dermacentor)
hardbacked ticks (family Ixodidae)
ticks (order Ixodida)
mites and ticks (subclass Acari)
arachnids (class Arachnida)
chelicerates (subphylum Chelicerata)
arthropods (phylum Arthropoda)
animals (kingdom Animalia)

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• basis capitulum [dorsal plate between head and body] longer than wide
• cornua [just aft of basis capitulum] as long as or longer than wide
• sizes of shield punctations not greatly disparate
• pearl grey coloration of shield more extensive than brown

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Chris’s observations: 5 (all are research grade)

Locations:

• Henry Coe SP: 3
• Coyote Hills RP
• Monte Bello OSP

Months:

• Mar.: 1
• Apr.: 1
• May: 1
• Jun.: 2

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Taxon info: iNaturalist – BugGuide

Bay Area species: iNaturalist