Rocky-mountain-spotted-fever
Guides
Amblyomma
Bont Ticks
Amblyomma is the third largest genus of hard ticks (Ixodidae), comprising medium to large, often ornamented species. The genus is the sole member of the subfamily Amblyomminae and exhibits its highest species diversity in the Americas, where half of all species occur. Many Amblyomma species are medically significant as vectors of human and animal pathogens, including Rocky Mountain spotted fever, ehrlichiosis, anaplasmosis, and the agent of alpha-gal syndrome. The genus likely originated between South America and Antarctica approximately 48 million years ago, with subsequent diversification and dispersal into Australian and South American Gondwana.
Amblyomma cajennense
Cayenne tick
Amblyomma cajennense, commonly known as the Cayenne tick, is a hard tick species historically considered to range from the southern United States through Central America and the Caribbean to northern Argentina. Molecular studies have revealed this 'species' is actually a complex of multiple cryptic species, with A. cajennense sensu stricto now restricted to the Amazonian region of South America. The species complex is of significant medical and veterinary importance as a vector of Rocky Mountain spotted fever and other rickettsial diseases.
Dermacentor andersoni
Rocky Mountain wood tick
Dermacentor andersoni, the Rocky Mountain wood tick, is a three-host hard tick found in the Rocky Mountain region of western North America. It is a medically significant vector, primarily transmitting Colorado tick fever virus, with secondary potential for Rocky Mountain spotted fever and tularemia. Unlike larvae and nymphs, which feed on small mammals, adults will feed on humans. The species exhibits sexual dimorphism in coloration and size, with engorged females reaching nearly three times their unfed size.
Dermacentor occidentalis
Pacific Coast tick
Dermacentor occidentalis, commonly known as the Pacific Coast tick, is a hard tick in the family Ixodidae native to western North America. Unfed adults measure approximately 4.5 mm in length with a distinctive silvery-gray exoskeleton. This species is a known vector of several human pathogens including Rocky Mountain spotted fever, Pacific Coast tick fever, and tularemia, though it does not transmit Lyme disease. The tick exhibits a three-host life cycle, feeding on a wide range of mammalian, avian, and reptilian hosts throughout its development.
Dermacentor similis
Western Dog Tick
Dermacentor similis is a recently described hard tick species (2021) previously misidentified as western populations of Dermacentor variabilis. Molecular and morphological analyses confirmed it as a distinct species restricted to western North America. Like its eastern counterpart, it is a three-host tick with significant medical and veterinary importance, though its specific vector competence for pathogens remains under investigation.
Ixodes affinis
Ixodes affinis is a hard-bodied tick species distributed across the southeastern United States, Mexico, Central America, and South America. Unlike its congener Ixodes scapularis, this species does not bite humans but serves as a competent vector for Borrelia burgdorferi sensu stricto, the causative agent of Lyme disease. Immature stages feed on birds and small mammals, while adults parasitize larger mammals including deer and dogs. Its expanding range into southeastern Virginia and association with migratory birds has raised concerns about its role in pathogen dispersal.
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I.-malayensisI.-marxiI.-masloviI.-matopiI.-minorI.-monospinosusI.-moreliI.-moschiferiI.-murisI.-murreletiI.-myospalacisI.-nchisiensisI.-necromysI.-neitziI.-nipponensisI.-nuttalliI.-ochotonaeI.-okapiaeI.-oldiI.-ornithorhynchiI.-ovatusI.-pacificusI.-pararicinusI.-pavlovskyiI.-percavatusI.-peromysciI.-persulcatusI.-pomerantziI.-pterodromaeI.-quadratusI.-raccoonisI.-rageauiI.-randrianasoloiI.-rasusI.-redikorzeviI.-ricinusI.-rothschildiI.-rotundatusI.-rubicundusI.-rugicollisI.-rugosusI.-sapeloensisI.-sarsiI.-scapularisI.-schillingsiI.-sculptusI.-semenoviI.-soricisI.-spinaeI.-steiniI.-stilesiI.-stromiI.-subterranusI.-tancitariusI.-tanukiI.-tapirusI.-tasmaniI.-tayloriI.-tertiariusI.-texanusI.-theileraeI.-thomasaeI.-tovariI.-transvaalensisI.-triangulicepsI.-trichosuriI.-turdusI.-uriaeI.-vandenbergiI.-vanidicusI.-ventalloiI.-vespertilionisI.-victoriensisI.-walkeraeI.-werneriI.-woodiI.-zaglossiI.-zairensistick-taxonomytick-systematicstick-phylogenytick-evolutiontick-biogeographytick-ecologytick-physiologytick-behaviortick-reproductiontick-developmenttick-nutritiontick-metabolismtick-respirationtick-excretiontick-osmoregulationtick-neurobiologytick-sensory-biologytick-chemoreceptiontick-thermoreceptiontick-mechanoreceptiontick-photoreceptiontick-circadian-rhythmtick-biological-clocktick-seasonalitytick-diapausetick-overwinteringtick-cold-hardinesstick-desiccation-resistancetick-water-balancetick-cuticletick-moltingtick-ecdysistick-growthtick-feedingtick-engorgementtick-blood-mealtick-digestiontick-salivationtick-saliva-compositiontick-salivary-gland-transcriptometick-salivary-proteometick-pharmacologytick-toxicologytick-venomtick-paralysis-toxintick-borne-pathogentick-borne-virustick-borne-bacteriumtick-borne-protozoantick-borne-helminthtick-borne-rickettsiatick-borne-ehrlichiatick-borne-anaplasmatick-borne-borreliatick-borne-babesiatick-borne-theileriatick-borne-hepatozoontick-borne-coxiellatick-borne-francisellatick-borne-bartonellatick-borne-chlamydiatick-borne-mycoplasmatick-borne-spiroplasmatick-borne-arbovirustick-borne-flavivirustick-borne-bunyavirustick-borne-reovirustick-borne-orbivirustick-borne-coltivirustick-borne-nairovirustick-borne-phlebovirustick-borne-thogotovirustick-borne-orthomyxovirustick-borne-arenavirustick-borne-hantavirustick-borne-paramyxovirustick-borne-rhabdovirustick-borne-bornavirustick-borne-filovirustick-borne-coronavirustick-borne-poxvirustick-borne-herpesvirustick-borne-adenovirustick-borne-papillomavirustick-borne-polyomavirustick-borne-circovirustick-borne-parvovirustick-borne-anellovirustick-borne-dependovirustick-borne-tenuivirustick-borne-deltavirustick-borne-hepadnavirustick-borne-retrovirustick-borne-lentivirustick-borne-spumavirustick-borne-metavirustick-borne-pseudovirustick-borne-hemivirustick-borne-novirhabdovirustick-borne-peribunyavirustick-borne-phenuivirustick-borne-bandavirustick-borne-phasivirustick-borne-tulasvirustick-borne-orthonairovirustick-borne-shavivirustick-borne-sathuperi-virustick-borne-salehabad-virustick-borne-dera-ghazi-khan-virustick-borne-hughes-virustick-borne-farallon-virustick-borne-punta-salinas-virustick-borne-sapphire-II-virustick-borne-zirqa-virustick-borne-keterah-virustick-borne-thiafora-virustick-borne-erve-virustick-borne-malsoor-virustick-borne-tibet-virustick-borne-qalyub-virustick-borne-yogue-virustick-borne-kasokero-virustick-borne-lebombo-virustick-borne-nyamanini-virustick-borne-midway-virustick-borne-tokar-virustick-borne-absettarov-virustick-borne-hypr-virustick-borne-kumlinge-virustick-borne-omsk-hemorrhagic-fever-virustick-borne-langat-virustick-borne-louping-ill-virustick-borne-kyasanur-forest-disease-virustick-borne-alkhurma-hemorrhagic-fever-virustick-borne-powassan-virustick-borne-deer-tick-virustick-borne-heartland-virustick-borne-bourbon-virustick-borne-colorado-tick-fever-virustick-borne-eyach-virustick-borne-banna-virustick-borne-seadornavirustick-borne-great-island-virustick-borne-kemerovo-virustick-borne-lipovnik-virustick-borne-tribec-virustick-borne-chobar-gorge-virustick-borne-wad-Medani-virustick-borne-dugbe-virustick-borne-crimean-congo-hemorrhagic-fever-virustick-borne-nairobi-sheep-disease-virustick-borne-ganjam-virustick-borne-bandia-virustick-borne-sierra-nevada-virustick-borne-lone-star-virustick-borne-severe-fever-with-thrombocytopenia-syndrome-virustick-borne-huaiyangshan-virustick-borne-guertu-virustick-borne-Alongshan-virustick-borne-wenzhou-virustick-borne-wuhan-virustick-borne-yongjia-virustick-borne-chiba-virustick-borne-natori-virustick-borne-odawara-virustick-borne-kowloon-virustick-borne-tamanavirusStictocephala stimulea
Stictocephala stimulea is a treehopper species in the family Membracidae, first described by Van Duzee in 1914. Treehoppers in this genus are characterized by their enlarged, often ornate pronotum that extends over the body like a helmet or thorn. The specific epithet 'stimulea' suggests possible resemblance to or association with stinging organisms, though this refers to appearance rather than actual sting. Like other membracids, this species likely feeds on plant phloem sap using piercing-sucking mouthparts.
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