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Can anyone tell me what type of bug this is? I found two of them in my bed in Tennessee, United States.

It's not a tick. The shell is hard. It was alive and you could see it moving. It's .016", very small, about the size of a pencil tip. I had to see it through a magnifier to see it moving.

You don't feel the bite but it leaves a red spot and is very itchy and when you scratch it it turns to a sore like a busted pimple. It itches for days.

I can't see the pointer or legs that were under the body; was very hard to see as it was so tiny.

Tiny bug:

  • Location in the world would help, as would a clearer photo and a size estimation, if you can get them. Having said that, it could be a tick - especially if you have pets that go out-doors – bob1 Jul 28 at 2:15
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    Welcome! As ND Martin said, call your doctor right away in case it's a tick. Check your body for others. The doctor might want to see it! Did you just find them today? Are they alive? Are they the same size/shape? Engorged ticks vary; they drink different amounts of blood. Is the back squishy or hard? Can you see the shape of the pointer and the number of legs? Those are often the difference between a tick and a beetle. Did you feel it bite? What does the bite look like? Where are you in the US? Edit anything else you can think of into the question. Thanks! – Sue Saddest Farewell TGO GL Jul 28 at 20:15
  • Tennessee Not a tick. Hard shell was alive you could see it moving. .016" very small. Had to see it through a magnifier to see it moving. You don't feel the bite but it leaves a red spot and is very itchy and when you scratch it it turns to a sore like a busted pimple. Itches for days. Can't see the pointer or legs there under the body. Was very hard to see as it was so tiny. – Terresa Morris Jul 29 at 1:18
  • Very itchy? Could be a chigger, but they are usually red I think. – bob1 Jul 29 at 4:09
  • looks like a piece of fluff – ldgorman Jul 29 at 12:00
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Looks like a fully engorged deer (black-legged) tick. Can't tell from your picture whether it's larva or nymph. Here's a size comparison photo: https://news.psu.edu/sites/default/files/styles/threshold-768/public/CM%20ADD-TICKS221.jpg?itok=Z2ArX1YF

Top left is larva with nymph at its right. Call your doctor about possible exposure to Lyme or other tick-borne disease.

  • They are hard shell same size. I'm in Tennessee. They were alive. Not a tick. Very small had to look through a magnifier to see the legs or them moving. – Terresa Morris Jul 29 at 0:56
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    @TerresaMorris Deer ticks have a hard shell. You discount this answer at your own risk. Lyme disease is bad news. – Headblender Aug 29 at 21:24
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If not a tick (photo is way too fuzzy) then I would say bedbug nymphs since you indicate they are tiny.

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An additional suspect besides the tick family is another member of the Acari - mites.

There are a number of mite species that affect humans, the most common and well known of which is the Scabies Mite (Sarcoptes scabiei). Adult females are in the range of 0.3-0.45 mm/0.012-0.018". They are spherical and you usually can't see the legs. Like all the Acari, there is little separation of the head and body, and they do not have a thorax like the Insecta. The shell of a mite is in a single piece, which will distinguish it from all the beetles, which have split wing-cases over their back.

Mite bites typically result in a red, blistering/pimple-like rash (scabies shown) that is very itchy. Scabies in particular, burrow in the skin and you can see the burrows and bites in tracks on the skin.

There are some other common types of mites that you have probably heard of if you are from Tennessee, such as the Chiggers (several species), which you (and any animals you have) can easily pick up from areas where ticks are found too. Their bite is itchy and pimple-like. Chiggers are about 0.01"/0.4 mm in size and are an orange colour. They are more oval than round, but this depends on species and life-cycle stage as well as engorgement.

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