Two new species and new records of the ground beetle subgenus Falcinebria Ledoux & Roux, 2005 (Coleoptera, Carabidae, Nebria) from Tohoku District, northern Honshu, Japan

Falcinebria Ledoux & Roux, 2005 is a subgenus of Nebria Latreille, 1802 that shows marked differentiation in Japan, but its diversity has not yet been fully elucidated. This study describes two new species of this subgenus from the Tohoku District in northern Honshu: N. hayachinensis sp. nov. from Mt. Hayachine-san, Iwate; and N. yuda sp. nov. from Hinosawa, Nishiwaga-machi, Iwate (type locality) and Mt. Mahiru-dake, Akita. Additionally, new records are reported for N. niohozana Bates, 1883 and N. sagittata Sasakawa, 2020; the records for the former species include its northernmost collection record, while the record for the latter represents its southernmost collection record.