@article{PAR00025118, title = {{S}taurophora ouniangaensis sp. nov. ({B}acillariophyceae, {A}nomoeoneidaceae), a new diatom from the {O}unianga {L}akes in the {S}ahara, {C}had}, author = {{R}irongarti, {R}. and {C}ocquyt, {C}. and {P}ailles, {C}. and {S}ylvestre, {F}lorence}, editor = {}, language = {{ENG}}, abstract = {{M}odern diatom assemblages were investigated in the {O}unianga {L}akes located in the driest part of the {C}hadian {S}ahara. {T}hese lakes still exist today due to groundwater seepage. {T}hey contain a variety of diatom species, one of which could not be identified. {H}ere we describe a new species of {S}taurophora, {S}. ouniangaensis sp. nov. based on detailed light and scanning electron microscopy observations. {T}he new taxon presents all morphological characters attributed to this genus and differs from other {S}taurophora species mainly by its specific valve outline and the slightly twisted frustules along the transapical axis. {W}e compared this new species with the morphologically resembling {C}ymbella obtusa which was reported from {C}had. {T}he latter taxon has a much coarser stria density than our newly described species. {S}taurophora ouniangaensis sp. nov. supports that {S}taurophora species prefer inland saline environments. {I}ndeed, in the {O}unianga lakes, the new species was mainly observed in mesosaline to hypersaline waters.}, keywords = {{A}frica ; {C}ymbella obtusa ; mesosaline waters ; {S}ahara ; taxonomy ; {TCHAD} ; {SAHARA} ; {OUNIANGA} {LAC}}, booktitle = {}, journal = {{P}hytotaxa}, volume = {558}, numero = {1}, pages = {103--115}, ISSN = {1179-3155}, year = {2022}, DOI = {10.11646/phytotaxa.558.1.7}, URL = {https://www.documentation.ird.fr/hor/{PAR}00025118}, }