The bees of the genus Centris Fabricius, 1804 described by Theodore Dru Alison Cockerell (Hymenoptera: Apidae) Author Vivallo, Felipe text European Journal of Taxonomy 2020 2020-03-19 618 1 47 journal article 10.5852/ejt.2020.618 eb3e0d4d-e623-4c58-ab31-9833367933bd 3722950 FB1B58E6-7E40-4C16-9DFF-2EA5D43BC0B3 Centris merrillae Cockerell, 1919 Fig. 11 Centris merrillae Cockerell, 1919: 191 . Junior synonym of C. ( Hemisiella ) nigrescens ( Vivallo 2019 a) . Type data This species was described based on a single female specimen collected by the American limnologist and Amazon traveler Harriet Bell Merrill ( 1863–1915 ) during a research trip to South America. According to Rathbun (1911) , she sold to the NMNH 500 specimens of insects collected during her expedition to Brazil , including probably the exemplar studied by Cockerell. The holotype ( Fig. 11 ) is housed at NMNH and has the following data label: Manaos Brazil [printed]\ Miss HBMerrill Collector [printed] Centris merrillae Ckll Type. [handwritten]\ [red label] Type No. [printed] 21655 [handwritten] U.S. N.M. [printed]\ [yellow label] USNM ENT 00534204 [barcode] [printed]\\ DO NOT REMOVE SI DB Reference Not a property tag T. Schultz NMNH [printed]. The holotype is in good condition. Type locality Brazil : Amazonas State: Manaus (“Manaos”).