Purple Emperor vs Bioluminescent Fungus Gnat

Side-by-side species comparison

Attribute Purple Emperor Bioluminescent Fungus Gnat
Scientific Name Apatura iris Keroplatus testaceus
Order Lepidoptera Diptera
Family Nymphalidae Keroplatidae
Size 62-80 mm wingspan 8-12 mm
Habitat Woodlands Woodlands
Diet Carrion Feeders Fungus Feeders
Regions Europe, temperate Asia, Japan Europe
Conservation Least Concern Near Threatened

Purple Emperor

A majestic woodland butterfly whose males display an intense iridescent purple sheen visible only at certain angles. It never visits flowers, preferring carrion, dung, and tree sap.

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Did You Know?

Enthusiasts bait it down from the canopy using rotting shrimp, dirty nappies, or Stilton cheese.

Bioluminescent Fungus Gnat

A remarkable fungus gnat whose larvae create bioluminescent webs on bracket fungi. The blue-green glow attracts prey insects. One of the few bioluminescent insects outside fireflies.

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Did You Know?

Larvae glow in the dark, creating eerie blue-green patches on bracket fungi in dark forests.