Dasysyrphus nigricornis, Taxa Only, Exact Match: 2 Treatments

Dasysyrphus nigricornis			Locke, Michelle M. & Skevington, Jeffrey H., 2013, Revision of Nearctic <i> Dasysyrphus </ i> Enderlein (Diptera: Syrphidae), Zootaxa 3660 (1), pp. 1-80 : 48-50	48-50
Dasysyrphus nigricornis			Borodina, Olga & Borodin, Oleg, 2023, Syrphidae (Brachycera: Diptera) Of Latvia: Current Status Of Study In The Regional Aspect, Acta Biologica Universitatis Daugavpiliensis 23 (1), pp. 75-101 : 93	93