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Brief notes are presented on the classifications of Scaura Schwarz and Geotrigona Moure. A new subgeneric system is proposed for Scaura in which three subgenera are recognized: Scaura Schwarz, s.str.; Scauracea Engel, new subgenus; Schwarzula Moure. Likewise, a new subgenus is proposed in Geotrigona as Chthonotrigona Engel, new subgenus.
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Michael S. Engel (2022) studied this question.
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