Scrapter nitidus subgroup Species of the S. nitidus subgroup are defined by the following character combination: in both sexes facial fovea narrow but with a visible bottom and pronotal lobe dark brown to black. Females: propodeum partly carinate, discs of T2 and T3 finely and sparsely punctate. Males: T2–T3 with dense punctation that covers at least a third of the terga and antennal flagellum longer than compound eye. The S. nitidus subgroup comprises 18 species (Table 1) that are mostly morphologically very similar, so that species identification can be difficult. Especially identification of the females can be a problem without reference material.

Published as part of Mack, Anne & Kuhlmann, Michael, 2023, Revision of the nitidus species group of the bee genus Scrapter Lepeletier & Serville, 1828 (Hymenoptera: Apoidea), pp. 1-119 in European Journal of Taxonomy 912 on page 17, DOI: 10.5852/ejt.2023.912.2373, http://zenodo.org/record/10419994