Likely mosquito bite(s)

Mosquitoes occur near standing water, vegetation, and human dwellings worldwide.

Females take blood meals from humans and other animals to produce eggs; both sexes feed on nectar and plant sugars.

Females often bite exposed skin at dusk, night, or dawn, injecting saliva that causes itchy, red welts. Eggs develop in stagnant water, and adults may rest in shaded, humid areas.

Bites can cause itching, allergic reactions, and secondary infection; some species transmit diseases such as West Nile, dengue, malaria, or Zika. Mosquitoes also serve as prey and pollinators, though the pictured skin reaction alone cannot confirm the insect.