Two subspecies of <i>Denticollis nigricollis</i>.

<p>A and B: <i>D</i>. <i>n</i>. <i>nigricollis</i>; C and D: <i>D</i>. <i>n</i>. subsp. 1 (a candidate new subspecies identified by morphological examination). A and C: Dorsal view of adult; B and D: Aedeagus.</p>