The Hindwings are small or absent.
The Hindwings are as the forewings.
The Hindwings are where the flight is born.
The Hindwings are whitish cinereous.
The hindwing upperside spots are also small.
The Hindwings of this species are black.
The Hindwings are somewhat darker.
The forewing and hindwing colouration is similar to male colouration.
The Hindwings are exactly like the forewings, but without the cell spot.
They are colloquially called featherwing beetles, because the Hindwings are narrow and feathery.
The common name describes dark markings at the base of the hindwing of each species.
Hindwing with two pairs of spots in the disc,
one pair in the middle and the other near the apex.