The hypodermal colours are usually lighter than the epidermal, and are sometimes changed by a voluntary act.
Dermal glands: hypodermal unicellular glands which secrete wax, setae, spines, etc.
Dr. Hagen has divided the colours of insects into two classes, the epidermal and hypodermal.
In this connection, Dr. Hagen remarks, that probably all mimetic colours are hypodermal.
hypodermis hy·po·der·mis (hī'pə-dûr'mĭs) or hy·po·derm (hī'pə-dûrm')
An epidermal layer of cells that secretes an overlying chitinous cuticle, as in arthropods.
See tela subcutanea.