FIGURES 3–8. Male heads. 3, Ruizantheda nigra n in A new group of species within the bee genus Ruizantheda, with a revised key to the males of the genus (Hymenoptera: Halictidae: Caenohalictini)

FIGURES 3–8. Male heads. 3, Ruizantheda nigra n. sp; 4, R. colombiana n. sp.; 5, R. venezuelana n. sp.; 6, R. baeri (Vachal); 7, R. pilosa n. sp.; 8, R. gaullei (Vachal).Published as part of Coelho, Beatriz W. T. & Engel, Michael S., 2018, A new group of species within the bee genus Ruizantheda, with a revised key to the males of the genus (Hymenoptera: Halictidae: Caenohalictini), pp. 513-532 in Zootaxa 4415 (3) on page 517, DOI: 10.11646/zootaxa.4415.3.6, http://zenodo.org/record/124218