North Korea
A lizard unique to North Korea is the Korean Skink Plestiodon or (Eumeces) coreensis (reptile-stamps.de).
Endemic
freshwater fish include the Korean Taimen Hucho ishikawai (FishBase)
and a loach Misgurnus
buphoensis
(tinro.khv.ru).
A marine fish known only from North Korea is the goby Gymnogobius bungei (Google
Books).
Invertebrates found exclusively in North Korea include a ground beetle Nebria scaphelytra (CAS
pdf file), a plant bug Psallus
amoenus (Discover
Life), and a jumping spider Sitticus penicilloides
(Salticidae
of the World).
Among over 100 endemic vascular plant species are a feather reed
grass Calamagrostis
subacrochaeta (KBIS),
a pasque flower Pulsatilla
nivalis (Wild
Fauna and Flora of Korea), Saxifraga furumii (p. 17 of Wild
Fauna and Flora of Korea pdf file), a sedge Carex humbertiana (NYBG),
a poppy Papaver coreanum (Plants
on Post Stamps), the Korean Rhubarb Rheum coreanum (Plants
on Post Stamps), a lousewort Pedicularis lunaris (p. 4 of Wild
Fauna and Flora of Korea pdf file), a meadow-rue Thalictrum osmorhizoides
(wildgreen.co.kr),
a madder Rubia pubescens
(KBIS),
and a willow Salix
bicarpa (KBIS).
An endemic plant genus is Pentactina
rupicola (KBIS).
Important ecoregions include the Changbai Mountains Mixed
Forest (EoE) and the Central
Korean Deciduous Forest (EoE). An overview of North
Korea's flora and fauna can be found in its National Biodiversity
Strategy and Action Plan (CBD
pdf file). Additional Korean Peninsula endemic species that are shared
with South Korea can
be found here.