i thought to have an idea what you mean, but probably not. sorry.
the wounds
im not sure if i understood what you mean. does it mean, the 1mm wounds are dotted every 2,5 - 4 cm in one line along a blood vessel? that would sound like bedbugs, imo.
faik, such dotted lines are unusual for blood-feeding arthropods: they feed once, then move on.
pics: http://www.webmd.com/allergies/ss/slideshow-bad-bugs
the tunnels
there are worms that burrow under the skin, but these lines seem RED and heavily curved.
e.g. Hookworm (larvae are IN blood vessels), strongyloidis may bur ...
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