Ephemeral

http://en.wikipedia.org/wiki/Schmidt_Sting_Pain_Index 1.0 Sweat bee: Light, ephemeral, almost fruity. A tiny spark has singed a single hair on your arm. 1.2 Fire ant: Sharp, sudden, mildly alarming. Like walking across a shag carpet & reaching for the light ...

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i found this excerpt, but it only talks about plants: Annual or ephemeral plants remain in seed form for much of their existence. After a rain, the plants go through a rapid growing season, sprouting, blooming and producing seeds in the course of a few weeks ...

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