Lesser House Fly vs Dacetine Trap-Jaw Ant

Side-by-side species comparison

Attribute Lesser House Fly Dacetine Trap-Jaw Ant
Scientific Name Fannia canicularis Strumigenys emmae
Order Diptera Hymenoptera
Family Fanniidae Formicidae
Size 5-7 mm 1.5-2.5 mm
Habitat Indoors Indoors
Diet Scavengers Detritivores
Regions Worldwide Europe, North Africa
Conservation Least Concern Least Concern

Lesser House Fly

A small greyish fly often seen flying in circles beneath ceiling lights indoors. It breeds in decaying organic matter and is a secondary forensic indicator.

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Did You Know?

Males are well known for hovering in a fixed triangular flight pattern beneath indoor light fixtures.

Dacetine Trap-Jaw Ant

A minute trap-jaw ant with elongate mandibles fringed with specialized hairs used to detect and capture tiny soil-dwelling springtails. Workers are slow-moving, cryptic hunters that stalk prey in leaf litter. Their bodies are covered in bizarre spatulate hairs.

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Did You Know?

Their mandible trigger hairs are so sensitive they can detect the vibrations of a springtail walking nearby and snap shut in microseconds.