Spider veins are tiny, thin veins that can be seen very close to the skinâs surface. They look like red, blue, or green spider webs just beneath the skin. Sometimes they are also described as looking like marble. Spider veins are caused by a backup of blood. These become nonfunctional, âdead-endâ veins.
While the fairy fly is the worldâs smallest insect, there a few runners up! For example, the feather wing beetle is only .25 millimeters long. Some scientists think these beetles may even be smaller than fairy flies, but for now, the fairy fly is considered by many to be the âsmallest insect!â.
What type of bug is a small, black house bug? Blister beetles are medium-to-large-sized insects of the family Meloidae. Their name comes from their ability to secrete a toxin, cantharadin, from their leg joints that causes painful blisters upon contact with human skin. Blister beetles possess chewing mouth parts but seldom bite, and bites do not result in visible signs or health symptoms.