Chad
Among the 71 vascular
plant species known only from Chad are a shrimp plant Justicia hedrenii (JSTOR),
Aponogeton fotianus (JSTOR), a
sedge Pycreus pagotii
(JSTOR),
and Commicarpus raynalii
(JSTOR). Species described from
the Tibesti Mountains include a mint Nepeta tibestica (JSTOR),
Pentas tibestica (JSTOR),
an everlasting Helychrisum monodianum (JSTOR),
Ephedra tilhoana (MNHN), a legume Lotononis riouxii (JSTOR),
a birdsfoot trefoil Lotus tibesticus (JSTOR), a
milkwort Polygala murati
(JSTOR), and
a grass Agrostis
tibestica (MNHN).
Freshwater fish include Raiamas
shariensis (Google
Books),
a cyprinid known only from the type specimen. A cichlid Sarotherodon borkouanus
(Google
Books)(CDD) from Saharan oases is sometimes
considered distinct from the widespread Sarotherodon galilaeus
(Cichlid
Room Companion).
Endemic reptiles include Mocquard’s Writhing Skink Lygosoma mocquardi (BHL) and a recently described lizard Trapelus schmitzi (ZMFK
pdf file) known from a single specimen from the Ennedi Mountains.
Insects unique to Chad include a water boatman Micronecta bebdjana
(AMNH),
a
water scorpion Laccotrephes
niala (AMNH),
a
ground beetle Bradybaenus
robustus (fig. 2 on p. 6 of Eurocarabidae pdf file),
a leaf-chafer Pegylis tchadensis (p. 5 of Hannetons pdf file), a casebearing moth Nasamonica oxymorpha (AfroMoths), a leafhopper Tataka
bebedja (AMNH),
a
robber fly Euscelidia
hyalina (Euscelidia),
and
a stinkbug Diploxys
pallidispina (AMNH).
Other invertebrates known solely from Chad include a wall spider Oecobius tibesti (fr.wikipedia), a pseudoscorpion Amblyolpium simoni (fr.wikipedia), and a
freshwater worm Aulodrilus
tchadensis (p. 20 of IRD
pdf file).
Important ecoregions in Chad include the Tibesti-Jebel Uweinat Montane
Xeric Woodland (EoE)
and the Lake Chad Flooded Savanna (EoE).
Lists of endemic species, especially plants, can be found in
the
"Identification des Priorites Pour la Conservation de la Diversite
Biologique" (CHM
pdf file).