Malaysian Trilobite Beetle vs Common Moth Fly

Side-by-side species comparison

Attribute Malaysian Trilobite Beetle Common Moth Fly
Scientific Name Platerodrilus ruficollis Psychoda alternata
Order Coleoptera Diptera
Family Lycidae Psychodidae
Size 40-80 mm females, 8-10 mm males 2-4 mm
Habitat Woodlands Woodlands
Diet Wood Feeders Detritivores
Regions Southeast Asia (Malaysia, Borneo, Sumatra, Indonesia) Cosmopolitan
Conservation Least Concern Least Concern

Malaysian Trilobite Beetle

A bizarre beetle whose larviform females retain a flat, segmented larval appearance throughout life, resembling ancient trilobites. Males are small, winged, and conventionally beetle-shaped.

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Did You Know?

The flat, armored female looks so unlike a typical beetle that it was originally described as a separate species from the male.

Common Moth Fly

A tiny grayish moth fly with broad, hairy wings giving it a distinctly moth-like appearance. Its wings are held flat over the body at rest, and it runs in short hops when disturbed.

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Did You Know?

Moth flies are important components of sewage treatment trickling filter beds where their larvae help break down waste.