The lack of a scientific label hasn't stopped cultures from naming these creatures. You might know the "rain insect" by a local nickname:
This is the most common insect people point to when they say “rain bugs.” rain insects name
This is the insect most commonly given the specific name "Rain Moth" (also known as the "Bardee Grub" in its larval stage). The lack of a scientific label hasn't stopped
If so, you’ve encountered what many people collectively call the rain insects name
Common Insects After Rain: Monsoon Pest Guide - Rentokil PCI