Which bugs irritate your skin?

These can cause rashes or itching. 6 house and yard pests on Bug FAQ, most commonly seen first. Each line is quoted from that bug's page and its sources.

American Giant Millipede ComplexNarceus americanusCan irritate skin
It can spray a chemical that may cause skin burns.
Source: Wikipedia
Portuguese MillipedeOmmatoiulus moreletiCan irritate skin
It can irritate eyes and permanently stain clothing with a yellowish defensive fluid.
Source: Wikipedia
Brown-tail MothEuproctis chrysorrhoeaCan irritate skin
The caterpillar hairs of the brown-tail moth can cause a poison-ivy-like itchy rash on people.
Source: Wikipedia
Black Blister BeetleEpicauta pensylvanicaCan irritate skin
The black blister beetle can cause skin blisters if it is crushed on the skin because its body fluid contains cantharidin.
Source: extension.umaine.edu, extension.umd.edu, extensionpubs.unl.edu
Scaled Hump-backed FlyMegaselia scalarisCan irritate skin
Their mouthparts are the likely cause of skin irritation in some people, but they do not puncture the skin.
Source: Wikipedia
Giant VinegaroonMastigoproctus giganteusCan irritate skin
It seldom bites or pinches. The acid it sprays from its tail stings if it gets in cuts, the nose or mouth, and can irritate eyes.
Source: Wikipedia