Slow motion video of jump using iPhone here.
Rock Creek Park, Washington, DC, USA.
Found in stump
Kids thought it was a silver fish, but we don't think so. It seemed to try to jump when disturbed rather that crawled. Had a elongated tail or rear end.
The Archaeognatha are an order of wingless insects, also known as jumping bristletails. They are among the least evolutionarily changed insects, appearing in the Middle Devonian period along with the arachnids. They are known from both body and trace fossils (the latter including body imprints and trackways) throughout the remainder of the Paleozoic Era. The name Archaeognatha is derived from Greek, archaeos meaning "ancient" and gnatha meaning "jaw". This refers to the articulation of the mandibles,...