Acari Collection

Sarcoptes scabiei, scabies mite
Scanning electron microscope image of an itch or scabies mite, a parasite that infests a wide variety of mammalian hosts including humans

Oligonychus ununguis, red spider mite
Red spider mites are arachnids with four pairs of legs and no antennae. They are a plant-sucking pest mainly active in the hot summer weather

Red spider mite (Tetranychus urticae), Andalusia, Spain, June

Aquatic insects, lithograph, published in 1868
Aquatic insects: Top row: Ruddy darter (Sympetrum sanguineum), Azure damselfly (Coenagrion puella, mating), Center row: Water scavenger beetle (Hydrophilidae), Azure damselfly (Coenagrion puella)

American dog tick (Dermacentor variabilis) adult female, PA, Morris Arboretum, Philadelphia, Pennsylvannia, USA, June

Picture No. 12019772
Dung Beetle - with Phoretic Mites (Acari Subclass, Arachnida Class), mites are transported by host in a manner akin to hitch hiking - Klungkung, Bali, Indonesia. Date:

Tick (Ixodidae), view from above

Dermatophagoides sp. dust mite
Scanning electron microscope image of a dust mite. Dust mites are secondary to pollen as a cause for allergies and they live in bedding, soft furniture and carpets

Sarcoptes scabiei, scabies mite
Scanning electron microscope image of an itch or scabies mite, a parasite that infests a wide variety of mammalian hosts including man

Ornithodoros parkeri, tick
Ventral views of male and female of this soft tick (Ornithodoros parkeri) from the family Argasidae

Tyrophagus casei, cheese mite
Scanning electron microscope image of a cheese mite (x 170). These creatures are generally considered to be a pest, however they are added to Altenburger cheese to give it flavour

Dermanyssus gallinae, red or poultry mite
Scanning electron microscope image of the red or poutry mite. Adults appear red when engorged with blood, but otherwise are black, grey or white. Females are about 1mm long

Phthiracarus sp. box mite or armadillo mite
Scanning electron microscope (SEM) image of a box mite, showing how the body has fused into one single segment

Dermatophagoides pteronyssius, dust mite
Scanning electron microscope image showing a dust mite (x 250 on standard 9cm wide print). This image has been artificially coloured by a computer

Gorse Spider Mite (Tetranychus lintearius) mass in protective silk web on gorse, Dartmoor, Devon, England, July

Damage to tomato leaves by two-spotted or red spider mites, Tetranychus urticae in a garden greenhouse

Two-spotted or red spider mites, Tetranychus urticae, two immatures, on tomato leaf

Two-spotted or red spider mite, Tetranychus urticae, damage and webbing on leaves of ornamental house plant Colocasia esculenta

Early blisters of pear leaf blister mite, Eriophyes pyri, red on young pear foliage and flower peduncles in spring

Colony of gall mites, Aceria pseudoplatani, on the underside of a sycamore leaf

Tetranichid spider mites (Tetranichidae) on the underside of a sycamore leaf

Phytoseiid mite (Phytoseiidae) with prey mites on the underside of a sycamore leaf

Phytoseiid mite (Phytoseiidae) on the underside of a sycamore leaf

Model of House Dust Mite (Dermatophagoides pteronyssinus), view from above

Velvet mite, SEM C016 / 9092
Velvet mite. Coloured scanning electron micrograph (SEM) of the head of a velvet mite (Trombidium holosericeum). This bright red arachnid is one of the largest mites found in northern temperate

Water mite, SEM C015 / 6374
Water mite. Coloured scanning electron micrograph (SEM) of the head of a mite (subclass Acari) found in water. Magnification: x600, when printed 10cm wide

Water mite, SEM
Water mite. Coloured scanning electron micrograph (SEM) of the head of a mite (subclass Acari) found in water. Magnification: x600, when printed 10cm wide

Water mite, SEM C015 / 6372
Water mite. Coloured scanning electron micrograph (SEM) of the head of a mite (subclass Acari) found in water. Magnification: x600, when printed 10cm wide

Dermacentor andersoni, Rocky Mountain wood tick
This armoured tick species, the Rocky mountain wood tick (Dermacentor andersoni) is capable of causing paralysis

Ventral surface of a mite from the prostigmatic species
Scanning electron microscope image displayed on the glass screens in the Darwin Centre, at the Natural History Museum, London

Ixodes ricinus, sheep tick
Close-up of a pair ofsheep ticks (Ixodes ricinus) on a black background. Ticks are blood-sucking parasites which feed on the blood of their host

Mite in amber

Ornithodoros moubata, tick
This species of tick (Ornithodoros moubata) specifically carries the virus of African swine fever

Bryobia praetiosa, clover mite model
A large scale model of the clover mite (Bryobia praetiosa), a common mite found in grassland, native to Britain. Held within the Natural History Museum, London

Amblyomma sp. hard backed tick
Scanning electron microscope view of a hard backed tick from the family Ixodidae. Coloured artificially on computer

Bryobia praetiosa, clover mite
Scanning electron microscope image of a clover mite (x 70K), they have front legs which are nearly twice as long as the hind legs

Microthoracius cameli, camel sucking louse
A female specimen of a camel sucking louse (Microthoracius cameli) approximately 4mm in length

Demodex uncii, follicle mite
A follicle mite magnified X600. The follicle mite is a worm-like microscopic mite which lives in the follicles and sebaceous gland of most humans

Chiggers, larvae of trombiculid mites
Lizards have pockets within their skin where chiggers accumulate. These pockets offer ideal living conditions. Each pocket has thick walls that repair quickly

Adult ticks from domestic cattle in East Africa
These ticks are engorged with their hosts blood. To minimise the risk of drying out, they are plugged with cotton wool and usually inverted inside jars of spirit

Mite in baltic amber
A mite trapped in Baltic amber dating from the Upper Eocene period, about 35 million years ago

Ixodes ricinus, tick
Close-up of a recently fed tick (Ixodes ricinus) full of its hosts blood, on black background

Amblyomma americanum, lone star tick
A pair of lone star ticks (Amblyomma americanum). Ticks are blood-sucking parasites which feed on the blood of their host

Neotrombicula autumnalis, harvest mite
These harvest mites also known as bracken bugs or chiggers occur in Britain during late summer. The tiny mites attach themselves under tight fitting clothes, feed and then detach causing itchy scabs

Amblyomma hebraeum, African cattle tick
A male African cattle tick (Amblyomma hebraeum). Ticks are blood-sucking parasites wich live off the blood supply from their host

Varroa jacobsoni, honey bee mite

Filossera della vite
Tav. 3a. Illustrations of various mites and lice from Conoscenza delle Fillosserine 1912 by B. Grassi

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Acari, a diverse group of tiny arachnids, includes some notorious members such as the Sarcoptes scabiei or scabies mite. These microscopic pests cause intense itching and skin rashes in humans and animals alike. Another well-known the Oligonychus ununguis, commonly known as the red spider mite. These plant-feeding creatures can wreak havoc on crops and gardens. In Andalusia, Spain, during June, one might come across the Red spider mite (Tetranychus urticae), which thrives in warm climates. Their vibrant red color stands out against green foliage but serves as a warning sign for farmers. Moving away from plants to insects, we find ourselves observing aquatic insects through an old lithograph published in 1868. This artwork showcases the intricate beauty of these water-dwelling creatures that play vital roles in freshwater ecosystems. Shifting our focus back to acari species found on land, we encounter ticks like the American dog tick (Dermacentor variabilis) adult female at Morris Arboretum in Philadelphia. These blood-sucking parasites pose health risks to both humans and animals by transmitting diseases such as Lyme disease. Delving deeper into this world of minuscule organisms brings us face-to-face with Dermatophagoides sp. , more commonly known as dust mites. Found lurking within our homes' nooks and crannies, they feed on shed human skin cells and can trigger allergies among susceptible individuals. Ornithodoros parkeri is another member of Acari; it belongs to a group called ticks that are vectors for various diseases affecting both humans and animals worldwide. Not all acari species bring harm; Tyrophagus casei plays a crucial role in cheese-making processes by aiding fermentation while Dermanyssus gallinae acts as a nuisance pest for poultry farms globally.