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Revision of the subgenus Dufourea (Flavodufourea) Ebmer, 1984 (Hymenoptera, Halictidae, Rophitinae) and description of a new species D.(Flavodufourea) ulkenkalkana sp.nov. from Kazakhstan

. Zootaxa. 255, 1 (Aug. 2003), 1–8. DOI:https://doi.org/10.11646/zootaxa.255.1.1.