The fastest useful split
Fungus gnats fly weakly from potting soil; springtails jump and mass on wet surfaces.
Do not rely on a single color match. Start with scale and physical form, then check where the sign accumulates and whether a companion clue supports one candidate over the other.
| Feature | Fungus gnat | Springtail |
|---|---|---|
| Movement | Flies | Jumps |
| Body | Slender with long legs | Minute speck-like |
| Center | Potting media | Wet surface/soil |
| Larva | Dark-headed in soil | No gnat larva |
Observe whether the organism truly flies or springs.
Correct plant moisture with plant-safe methods.
Open safety guidanceCheck each full evidence profile
Fungus gnat
Sciaridae
Long-legged dark gnats hovering close to moist plant soil, with translucent dark-headed larvae in media.
Springtail
Collembola
Large clusters of tiny specks that spring when disturbed and disappear as the moisture source dries.
Why a visual match can fail
Scale can be distorted by a close-up photograph, loose material may be moved by cleaning or airflow, and old evidence can change color or texture. A reliable conclusion uses multiple observations that point in the same direction and preserves contradictory details instead of forcing a match.