大灰伏翼（學名：Hypsugo mordax）也稱灰白油蝠，一種分布於印度尼西亞爪哇[1]地區的蝙蝠，隸屬於蝙蝠科高級伏翼屬。
本種與茶褐伏翼（Hypsugo affinis）近似，本種在中國的記錄實際上可能是茶褐伏翼。[2]但是最新發表的《中國獸類名錄（2021版）》仍記錄了本種。[3]
形態特徵
大灰伏翼前臂長40～42毫米。背部鏽棕色，毛尖較淡。腹部黑棕色，毛尖淡棕色。肛區淡棕黃色。翼膜附著於趾基。[2]
參考文獻
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