nigrocephalus, Taxa Only, Exact Match: 2 Treatments

Tremex nigrocephalus			Lee, Jong-Wook & Park, Jin-Kyung Choi and Bia, 2019, Synoptic list of Symphyta (Hymenoptera) in Korea, Journal of Species Research 8 (1), pp. 1-96 : 14	14
Ilyobius nigrocephalus		sp. nov.	Ardila-Camacho, Adrian, Rivera-Gasperín, Sara Lariza, Martins, Caleb Califre & Contreras-Ramos, Atilano, 2021, A reappraisal of the taxonomy of Neotropical Sialidae (Insecta: Megaloptera): with the description of a new genus from Cuba, European Journal of Taxonomy 782, pp. 21-54 : 37-40	37-40