About Drilus flavescens Olivier, 1790
Drilus flavescens Olivier, 1790 shows one of the most extreme cases of sexual dimorphism found in insects. Females of this beetle are larviform, meaning they look like caterpillars, and completely lack wings and other typical adult characteristics. Adult males grow to approximately 10 millimetres (0.39 inches) in length. They have long comb-shaped antennae, which are likely used to detect female pheromones. Males have black heads and pronota, while their elytra are reddish, quite soft, and covered in fine upright hairs. This species is primarily distributed across Austria, Belgium, Luxembourg, France, Italy, Spain, Germany, and Switzerland.
