title: Description of the second and third stage larvae of Agabus subtilis Er. and A. nigroaeneus Er. (Coleoptera, Dytiscidae) with some data on their biology.
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000033:anatomy & histology* / Q000502:physiology; D007814:Larva; D008675:Metamorphosis, Biological