Lone Star Tick, Northeastern Water Tick, Turkey Tick, Cricker Tick
Amblyomma americanum is a three-host hard tick native to eastern North America, notable for its aggressive host-seeking behavior and expanding geographic range. Adult females are distinguished by a silvery-white star-shaped spot on the scutum, while males display white streaks or spots at the shield margins. The species is the primary vector of Ehrlichia chaffeensis and Ehrlichia ewingii, and its bite can induce alpha-gal syndrome—a delayed allergic reaction to mammalian meat. Unlike many ticks, A. americanum exhibits active horizontal movement rather than passive questing, traveling up to 9 meters in 24 hours in field conditions.
marsh mosquito, nail mosquito
Anopheles is a genus of mosquito comprising approximately 460 recognized species, first described by German entomologist J.W. Meigen in 1818. The genus diverged from other mosquitoes approximately 100 million years ago. While over 100 species can transmit human malaria, only 30–40 commonly transmit Plasmodium parasites that cause human malaria in endemic areas. Anopheles is the sole mosquito genus capable of transmitting human malaria, making it one of the most medically significant insect genera globally.
Carios kelleyi is a soft tick (family Argasidae) that parasitizes bats, primarily the big brown bat (Eptesicus fuscus). First described in 1941, this species has been documented across much of North America and has been recorded in at least 29 of the 48 conterminous United States, plus Canada and Cuba. The species has gained attention due to its association with human dwellings when bats roost in attics and structures, and its potential to bite humans when primary bat hosts are removed. Recent studies have identified rickettsial agents in C. kelleyi, including Rickettsia lusitaniae (first U.S. detection), 'Candidatus Rickettsia andeanae', and a Rickettsia parkeri-like agent, raising public health concerns about its vector potential.
Rodent and Bird Fleas
Ceratophyllidae is a family of fleas (Siphonaptera) comprising ectoparasites that primarily infest rodents and birds. The family contains two subfamilies: one with over 40 genera and another with only three. Members are blood-feeding parasites with documented associations spanning multiple host groups including rodents (Peromyscus, Neotoma), birds, and occasionally marsupials such as the Virginia opossum. Several species within this family have been implicated as potential vectors for zoonotic pathogens.
thick-tailed non-biting midge, thick-skinned midge
Chironomus crassicaudatus is a non-biting midge in the family Chironomidae, described by Malloch in 1915. The species is known from the eastern United States, ranging from Texas to New York. It has been documented in a rare case of human urogenital myiasis in Kolkata, India, where larvae were found in the urine of a patient living in unhygienic conditions with shared toilet facilities. As a member of the non-biting midges, adults lack functional mouthparts and do not feed on blood.
oriental latrine fly, oriental blue fly
Chrysomya megacephala is a warm-weather blowfly with metallic blue-green coloration, notable for its forensic importance in estimating post-mortem intervals due to its rapid colonization of corpses. The species exhibits two distinct forms: a normal forest-dwelling form restricted to South Pacific Islands, and a synanthropic derived form that has spread globally from Papua New Guinea and is closely associated with human environments. It serves as a significant public health concern through its role in causing accidental myiasis and mechanically transmitting pathogens to human food.
Culex coronator is a highly invasive Neotropical mosquito species first described from Trinidad and Tobago in 1906. It was first detected in the United States in Louisiana in 2004 and has since spread rapidly across the southeastern USA, now documented in 14 states and 386 counties. The species has been implicated as a potential vector of West Nile virus and other arboviruses, with laboratory studies confirming vector competence under certain temperature conditions. Its rapid expansion and adaptation to urban environments pose significant public health concerns.
Florida SLE mosquito
Culex nigripalpus, commonly known as the Florida SLE mosquito, is a medium-sized, dark-colored blood-feeding mosquito and a significant disease vector in subtropical regions. It serves as the primary enzootic vector of Saint Louis encephalitis (SLE) virus to wild birds and the primary epidemic vector to humans in Florida. The species has been demonstrated capable of transmitting West Nile virus, Eastern equine encephalitis virus, dog heartworm, and Avian malaria. Its habit of feeding on both birds and mammals gives it substantial potential for zoonotic transmission from birds to humans.
black-tailed mosquito, dark-tailed mosquito
Culiseta melanura, the black-tailed mosquito, is a North American mosquito species and the primary enzootic vector of eastern equine encephalitis virus (EEEV). Adult females feed almost exclusively on birds, with strong preferences for species such as wood thrush, American robin, and northern cardinal. The species maintains EEEV transmission among avian hosts throughout its range in eastern and central North America. In Florida, populations persist year-round in wet tree holes, serving as a reservoir that may reseed northern populations annually.
Hemiscorpiidae is a family of scorpions whose included genus Hemiscorpius is documented across Africa and Asia, with a recognized diversity hotspot in southern Iran. The family has undergone taxonomic revision, having previously been called Ischnuridae and Liochelidae. Species delimitation within Hemiscorpius is complicated by morphological similarity and cryptic diversity, necessitating integrated molecular, morphometric, and ecological data. Many regional populations are endemic and restricted to specific habitats, making them vulnerable to environmental change.
Hylesia is a genus of moths in the family Saturniidae, subfamily Hemileucinae, erected by Jacob Hübner in 1820. Species in this genus are distributed across South and Central America, with well-documented populations in Brazil, Venezuela, French Guiana, Colombia, Argentina, and Paraguay. The genus is notable for causing lepidopterism—a medical condition involving skin and respiratory reactions from contact with urticating setae (bristles) on adult females. Several species, particularly H. metabus and H. nigricans, are significant public health concerns due to seasonal outbreaks of dermatitis.
deer tick, black-legged tick, bear tick, Eastern Black-legged Tick
Ixodes scapularis is a hard-bodied tick native to the eastern and upper midwestern United States, with expanding populations in Canada. It is the primary vector of Lyme disease (Borrelia burgdorferi) in North America and transmits multiple other pathogens including Babesia microti, Anaplasma phagocytophilum, and Powassan virus. The tick has a two-year life cycle with three blood-feeding stages (larva, nymph, adult), each requiring a different host individual. Climate change is driving northward range expansion and increased human encounters.
Pharaoh Ant
Monomorium pharaonis, commonly known as the pharaoh ant, is a small (approximately 2 mm) yellow to light brown invasive ant species of unknown origin that has become one of the most widespread and problematic indoor pest ants globally. It is a highly polygynous, unicolonial species with colonies containing multiple queens, workers, males, and brood. The species exhibits pronounced caste polyphenism with distinct morphologies and behaviors across queens, workers, and males. Pharaoh ants are notorious for infesting hospitals, food service facilities, and residential structures, where they pose significant public health risks as mechanical vectors of pathogens. Their complex social structure, involving multiple reproductives and decentralized nest sites, makes them exceptionally difficult to control using conventional insecticide treatments.
eastern treehole mosquito, treehole mosquito
Ochlerotatus triseriatus, the eastern treehole mosquito, is a container-breeding mosquito native to North America. It is the primary enzootic vector of La Crosse virus, the leading cause of arboviral encephalitis in children in the United States. Larvae develop in natural tree holes and artificial water-holding containers, feeding on microbial communities associated with decaying organic matter. The species exhibits strong density-dependent survival, with larval crowding significantly reducing per-capita survival rates—a trait that has important implications for mosquito control strategies.
Green Jewel Fly
Ornidia obesa is a metallic green syrphid fly widely distributed across the Americas and introduced to the Old World. Adults are frequently observed in association with decomposing organic matter, particularly animal feces and compost. The species has been documented as a host for pteromalid parasitoids and is noted for harboring bacteria of public health significance.
Ape Lice
Pediculidae is a family of sucking lice (suborder Anoplura) that includes obligate ectoparasites of primates. The family contains Pediculus humanus, the human head and body louse, which exists as two morphologically similar but ecologically distinct forms: P. h. capitis (head louse) and P. h. humanus (body louse). Pediculidae also includes P. schaeffi, which infests chimpanzees and bonobos. These lice are wingless, dorsoventrally flattened insects with specialized mouthparts for piercing skin and feeding on blood. They complete their entire life cycle on the host and are of significant medical importance as vectors of epidemic typhus, trench fever, and relapsing fever.
Human Louse
Pediculus humanus is an obligate ectoparasite of humans comprising two subspecies: P. h. humanus (body louse) and P. h. capitis (head louse). This wingless insect has been associated with humans throughout recorded history and serves as a vector for several serious human diseases including epidemic typhus, trench fever, and relapsing fever. The body louse is larger and more robust than the head louse, with females capable of laying up to 295 eggs in their lifetime under optimal conditions. Both subspecies feed exclusively on human blood and complete their entire life cycle on the host.
Crab Louse, Pubic Louse, Crabs
Pthirus pubis is an obligate ectoparasite of humans, the sole species in its genus to infest humans. It is dorsoventrally flattened, wingless, and 1-2 mm in length, with a crab-like appearance due to its broad, short body and specialized clawed legs adapted for grasping coarse human hair. The species has infested humans for approximately 10,000 years, with archaeological evidence from Roman and Medieval Britain, pre-Columbian South America, and southern Peru. Unlike the closely related head and body lice (Pediculus humanus), P. pubis is extremely sedentary, rarely leaving direct contact with the host body, and is transmitted primarily through sexual contact.
Brown Dog Tick, Kennel Tick, Pantropical Dog Tick
Rhipicephalus sanguineus is a hard tick species distinguished by its ability to complete its entire life cycle indoors, a trait unusual among ixodid ticks. It is found worldwide but is most common in warmer climates. The species is a three-host tick that feeds on a variety of mammals, with dogs serving as the preferred host in the United States. It is a significant vector of multiple pathogens affecting dogs and humans, including Ehrlichia canis, Babesia canis, Rickettsia rickettsii, and Rickettsia conorii.
Scabies Mite, Itch Mite
Sarcoptes scabiei is a parasitic mite that burrows into the epidermis of mammals, causing scabies in humans and sarcoptic mange in animals. The mite has a cosmopolitan distribution and infests numerous host species including humans, domestic animals, and wildlife. Adult females create characteristic S-shaped burrows in the stratum corneum where they deposit eggs. The disease produces intense pruritus through host immune responses to mites, eggs, and fecal pellets. Different host-adapted variants exist, though cross-infectivity between closely related hosts has been documented.
Turkestan cockroach, red runner cockroach, rusty red cockroach
Shelfordella lateralis, commonly known as the Turkestan cockroach, is an invasive cockroach species native to Central Asia that has established populations in the southwestern United States, Europe, and other regions. It is primarily an outdoor species that inhabits water meter boxes, concrete cracks, compost piles, leaf litter, and sewer systems. The species exhibits sexual dimorphism: males are winged and capable of flight, while females have reduced wings. S. lateralis is displacing the oriental cockroach (Blatta orientalis) in many areas of California and the southwestern U.S. due to faster maturation and higher reproductive output. It has become a significant urban pest in some regions and carries antibiotic-resistant pathogenic bacteria, raising public health concerns.
brown-banded cockroaches
Supella is a genus of small, synanthropic cockroaches in the family Ectobiidae, with the brown-banded cockroach (S. longipalpa) being the most widespread and well-known species. Native to Africa and the Arabian Peninsula, the genus has achieved cosmopolitan distribution through human-mediated transport. Members of this genus are distinguished by transverse pale bands across the wings and abdomen, pronounced sexual dimorphism in wing development, and a preference for warm, dry indoor environments. The type species S. longipalpa is a significant public health pest that completes its entire life cycle within human-built structures.
brown-banded cockroach, brownbanded cockroach, TV roach
Supella longipalpa, commonly known as the brown-banded cockroach, is a small synanthropic pest of presumed African origin that has become established in human-built structures worldwide. It is notable for pronounced sexual dimorphism: males are slender with long, functional wings and are capable of flight, while females are broader with short, non-functional wings. The species completes its entire life cycle indoors and shows distinct behavioral preferences for warmer, drier locations compared to other domestic cockroaches, often inhabiting furniture, appliances, and upper wall areas.
kissing bug, blood-sucking conenose
Triatoma gerstaeckeri is a triatomine bug (subfamily Triatominae) and a documented vector of Trypanosoma cruzi, the protozoan parasite causing Chagas disease. Adults measure 20–30 mm in length. The species occurs from the southwestern United States (New Mexico, Texas) through northeastern Mexico, occupying dry scrubland habitats with strong associations to woodrat (Neotoma) nests. It exhibits paurometabolous development with five nymphal instars before adulthood. The species is notable for its relatively high T. cruzi infection rates in some populations and its propensity for peridomestic occurrence near human habitation.
Eastern Bloodsucking Conenose, Mexican Bed Bug, Kissing Bug
Triatoma sanguisuga is a blood-feeding assassin bug in the subfamily Triatominae, commonly known as the eastern bloodsucking conenose or kissing bug. It is the most widespread triatomine species in the United States and serves as a vector for Trypanosoma cruzi, the parasite that causes Chagas disease. Unlike highly efficient South American vectors such as Triatoma infestans, T. sanguisuga typically defecates after feeding rather than during, reducing but not eliminating transmission risk to humans. The species has been implicated in documented autochthonous human Chagas disease cases in the United States.
