Palpares libelluloides has a relatively large wingspan of more than 10 centimetres (3.9 in).

The males can be recognized by their long, delicate genital appendages.

The specific name libelluloides means "dragonfly-like" (cf the dragonfly genus Libellula).

This species is widespread in the Mediterranean regions and it is mainly present in Albania, Bulgaria, France, Greece, Hungary, Italy, Romania, Spain and Turkey.

It can be found in thickets and rocky slopes up to about 1000 meters above sea level.