2 – Au Microscope : ... une métamorphose complète en 4 étapes (oeuf, larve, nymphe, adulte). 1 – Micro-bio : Définition des larves de coléoptères du sol. Ultrastructure du système sensoriel de la maxille chez la larve du Coléoptère cavernicole Speophyes lucidulus Delar. (Bathysciinae) (Bathysciinae) Author links open overlay panel G. Corbière-Tichane An entomologist at New York University, Amy Berkov, and her colleagues, described in 2008 for the first time the existence of venomous organs in a Beetle Onychocerus albitarsis, a species of the Cerambycidae family. All known extinct species of Mesozoic and Cenozoic weevils are listed. These organs are at the tip of the antennae and their venom causes skin and subcutaneous inflammation in humans.