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Pille Arnold, J., Murphy, M.V., Didham, R.K. and Houston, T.F. 2019. Rediscovery of the ‘extinct’ bee Hesperocolletes douglasi Michener, 1965 (Colletidae: Colletinae: Paracolletini) in Western Australia and first description of the female. Journal of Threatened Taxa. 11, 3 (Feb. 2019), 13310–13319. DOI:https://doi.org/10.11609/jott.4610.11.3.13310-13319.