Bat Fly vs Latrine Fly

Side-by-side species comparison

Attribute Bat Fly Latrine Fly
Scientific Name Penicillidia conspicua Fannia scalaris
Order Diptera Diptera
Family Nycteribiidae Fanniidae
Size 2-5 mm 5-7 mm
Habitat Caves Wetlands
Diet Parasites Scavengers
Regions Europe, Asia, Africa Worldwide
Conservation Least Concern Least Concern

Bat Fly

A bizarre wingless fly that lives exclusively as an ectoparasite on bats. It has lost its wings entirely and scurries through bat fur like a spider.

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Did You Know?

These flies have evolved to look and move like spiders, having completely lost their wings and flattened their bodies for life in bat fur.

Latrine Fly

A small fly that breeds in excrement and decaying organic matter in latrines and drains. It can cause urogenital myiasis when larvae enter the urinary tract.

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Did You Know?

Its flattened, spiny larvae are among the few fly species documented to cause urinary myiasis in humans.