Nycticeinops is a genus of vesper bat in the family Vespertilionidae. It contains the following species:
Bellier's serotine, Nycticeinops bellieri Broad-headed serotine, Nycticeinops crassulus Eisentraut's serotine, Nycticeinops eisentrauti Grandidier's serotine, Nycticeinops grandidieri Happolds's serotine, Nycticeinops happoldorum Large-headed serotine, Nycticeinops macrocephalus Schlieffen's serotine, Nycticeinops schlieffeni
Formerly, the only species placed in this genus was Schlieffen's serotine (N. schlieffeni), but phylogenetic evidence has placed several other species in this genus. These species were formerly classified in either Pipistrellus, Neoromicia, or Hypsugo until being reclassified into the new genus Parahypsugo in 2019. In a 2020 study, Nycticeinops was found to contain Parahypsugo, and thus both were synonymized.
The fossil species of Nycticeinops serengetiensis and Nycticeinops kutchensis are also known. N. kutchensis known from c. 11 Ma of Kutch in Gujarat (India) is the oldest record for this modern genus.
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