Some useful information on insect/arachnid bites

Characteristic pustules from fire ant bites.
(see larger image for details)

Characteristic tick bite (from Wisconsin) of Lyme Disease

Differentiating inflammation/necrosis from Lyme Disease tick bite or from brown recluse spider bite.

More info

What is the difference between a bite and a sting?

Necrosis on dog leg and human leg attributed to brown recluse spider bites. Another human leg bite.