Hylaeus (Dentigera) breviceps Morawitz, 1876

Risch, Stephan, Roberts, Stuart P. M., Smit, Jan, Wood, Thomas J., Michez, Denis & Reverté, Sara, 2023, The new annotated checklist of the wild bees of Europe (Hymenoptera: Anthophila), Zootaxa 5327 (1), pp. 1-147 : 51

Hylaeus (Dentigera) breviceps Morawitz, 1876

Distribution. The European records of Hylaeus breviceps in Dathe (1980) refer to Hylaeus (Dentigera) pallidicornis Morawitz, 1876 ( Dathe & Proshchalykin 2017). However, a few recent records in Dagestan may indicate that the species could be widely distributed in the European part of Russia ( Proshchalykin & Dathe 2021).

Family HALICTIDAE Thomson, 1869

Note: in Europe, within the subfamily Halictinae , the tribe Halictini contains only the genera Halictus , Lasioglossum , Seladonia , Sphecodes , and Thrincohalictus . The genera Nomiapis , and Pseudapis are found in the subfamily Nomiinae , the genera Ceylalictus and Nomioides are found in the subfamily Nomioidinae , while the genera Dufourea , Rhophitoides , Rophites and Systropha are found in the subfamily Rophitinae . For the two latter subfamilies, the tribal system is not yet well-established. Therefore, the changes and additions proposed here for the family Halictidae will be divided by subfamilies ( Halictinae , Nomiinae and Rophitinae ).

Moreover, the generic and subgeneric classification of Halictini has remained unclear. We follow the position that Seladonia is a valid genus that is sister to Halictus (with Thrincohalictus being sister to Seladonia + Halictus ; Danforth et al. 1999). For now, we maintain the Halictus subgeneric classification system of Yu.A. Pesenko (2004a); though this system requires molecular appraisal and validation, it is here used as the status quo in the absence of supported consensus.

Subgeneric classification of Lasioglossum is also highly challenging, due to the substantial incongruence between existing systems and molecular data ( Gibbs et al. 2012, 2013). A new, global subgeneric classification system for Lasioglossum is currently being prepared (J. Gibbs & J. Gardner, in litt.), so for the purpose of this checklist we use the subgeneric classification system adopted by Kuhlmann et al. (2022), which was based on the conclusions of Gibbs et al. (2013). It should therefore be considered an intermediate classification until stability is achieved with the forthcoming global revision.