Examined specimens. VIETNAM. Cao Bang: Phia-Oac Mts, Phia-Den env.; 22°34’01”N, 105°52’14”E; 5, 6- 2011; alt. 800–1200 m; 1 ♀ (EJCB). Ninh Binh: Cuc Phuong Nat. Park; 20°21‘10“N, 105°35‘E; 4-2012; alt. 440 m; 5 (EJCB).