Invertebrates
Net-Winged Beetle
Lycidae · also called net-winged beetles
Along a forest edge, a boldly orange-and-black net-winged beetle rests in plain view, entirely unbothered by nearby predators that have already learned, through bitter experience, to leave that exact colour combination strictly alone.
Overview
The net-winged beetle, family Lycidae, is a forest-dwelling beetle group found nearly worldwide, with particularly high diversity in tropical regions. Its genuinely distasteful chemical defence and bold warning colouration, widely copied by mimicking species, make it one of the more ecologically influential model species in the insect world.
A warning sign other insects borrow for free
Few insects have inspired as much mimicry as the net-winged beetle, whose real chemical defence has made its bold colour pattern valuable enough that numerous unrelated, harmless species have independently evolved to wear the exact same warning.
Status
Least Concern — widespread and common across suitable forest habitat worldwide.
Net-Winged Beetle: common questions
Why do so many other insects look like net-winged beetles?
A net-winged beetle's bold warning colouration, often orange or red combined with black, signals its genuine chemical defence to predators, and numerous other harmless insect species have evolved through Batesian mimicry to copy this same appearance, borrowing the protection of learned predator avoidance without producing any comparable distasteful chemicals themselves.
Why are a net-winged beetle's wing covers soft?
The net-winged beetle has notably soft, flexible wing covers, quite different from the hard, rigid wing covers typical of most other beetle families, a trait that sets the group apart structurally even though it doesn't reduce the effectiveness of its chemical defences.
What does a net-winged beetle larva eat?
A net-winged beetle larva develops within decaying wood, bark, or leaf litter, feeding on fungi and decomposing plant material, a diet quite different from the nectar and plant fluids many adult net-winged beetles consume.
Where do net-winged beetles live?
Net-winged beetle species are found in forest habitat across most of the world, with particularly high diversity in tropical regions, generally associated with decaying wood and leaf litter for their larval stage.