springtail

noun

1. Any of various wingless hexapods, of the subclass Collembola, with spring-like legs.

   “Among the wonders of the natural world that few people have ever noticed: a semiaquatic springtail in motion.”

   “Springtails, or collembolans, are strictly not insects because of technicalities to do with the position of their mouthparts, but they are the closest cousins of insects.”