Pseudocrangonyx concavus sp. nov. Holotype: female, NIBRV0000862807, 9.2 mm, from Hwansangul Cave, South Korea. A habitus B head C antenna 1 D, E antenna 2, lateral (D) and medial (E) F upper lip G lower lip H right mandible I incisor and lacinia mobilis of left mandible J maxilla 1 K maxilla 2 L maxilliped.

 
 
  Part of: Jung TW, Kim JG, Kim M-S, Yoon SM (2020) Five new subterranean amphipods of the genus Pseudocrangonyx from Korea (Crustacea, Amphipoda, Pseudocrangonyctidae). ZooKeys 970: 1-50. https://doi.org/10.3897/zookeys.970.55035