MdL collected specimens, gathered the records of B. vagum, identified specimens, wrote the paper, conceived the identification key, adapted figure 1 and prepared figures 2 to 5; RGB collected specimens, gathered records of B. kewense and identified specimens; PO gathered records of B. kewense and identified specimens; PKB prepared an early version of figure 2, confirmed the identification of specimens and reviewed and made additions to earlier drafts of the paper. All authors approved the final draft.