this is because they “play dead.” However,

a species Linnaeus described, Hister

quadrimaculatus, has striking, red,

“C”-shaped markings on the elytra, which

are reflected, so when viewed from the side

could have reminded him of the grinning

and grimacing mouths of the masks used

in classical theater. “Clown” may simply

be a clumsy translation of “actor”

called the “pygidium.” The head, antennae, and

legs can be withdrawn into grooves, protecting the

appendages and making the beetles look like seeds;

they are so smooth and shiny that they are difficult

to pick up. Almost all species can fly.

Most Histeridae are uniform black or brown,

though a few have a greenish or blue metallic luster,

and one or two have a pattern or red markings on

the elytra.

above | Hololepta aequalis

This flat-bodied North

American beetle hunts fly

larvae under tree bark.

Several mites are hitching

a lift on this individual.

below | Saprinus A metallic

blue histerid from Australia

is associated with carrion,

where it feeds on fly maggots.