malacoderm
/ˈmaləkə(ʊ)dəːm/Zoology. Now rare
adjective
Having a soft integument; belonging to a group characterized by such an integument; specifically (of a beetle) of the former group Malacodermata (or Malacodermi), comprising soft-bodied species such as soldier beetles and fireflies (now in the superfamilies Cantharoidea, Cleroidea, and Lymexyloidea).
Origin
Mid 19th century; earliest use found in William Kirby (1759–1850), entomologist and naturalist. From (i) French malacoderme.