Two subspecies of Denticollis nigricollis.
figureposted on 05.02.2016, 20:36 by Taeman Han, Wonhoon Lee, Seunghwan Lee, In Gyun Park, Haechul Park
A and B: D. n. nigricollis; C and D: D. n. subsp. 1 (a candidate new subspecies identified by morphological examination). A and C: Dorsal view of adult; B and D: Aedeagus.