Reference

Felipe Vivallo, Fernando Cesar Vieira Zanella (2021): Relicthemisia, a new subgenus of the oil-collecting bee genus Centris Fabricius, 1804 with notes on distribution and host plants of C. xanthomelaena Moure & Castro, 2001 (Hymenoptera: Apidae) – European Journal of Taxonomy – 0760: 1 - 15.