Degeeri Booklouse vs Lesser House Fly

Side-by-side species comparison

Attribute Degeeri Booklouse Lesser House Fly
Scientific Name Liposcelis decolor Fannia canicularis
Order Psocoptera Diptera
Family Liposcelididae Fanniidae
Size 0.7-1 mm 5-7 mm
Habitat Indoors Indoors
Diet Fungus Feeders Scavengers
Regions Worldwide Worldwide
Conservation Least Concern Least Concern

Degeeri Booklouse

A cosmopolitan booklouse commonly found in libraries, herbaria, and grain stores. It can cause significant damage to stored collections.

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Did You Know?

It can build up huge populations undetected due to its tiny size.

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.