Tetralonia malvae (Rossi, 1790)

Apis malvae Rossi, 1790: 107 . Type lost. Neotype designated by Dorchin & Michez (2024) from Italy: Lazio (Roma), Maccarese (OÖLM).

Tetralonia malvae is the oldest name which has been traditionally associated with the species. However, recently Scheuchl et al. (2023) proposed that this species was likely a synonym of Tetralonia nana Morawitz, arguing that, like T. malvae, it is associated with Malvaceae, and fits the original description better. These authors followed Bischoff & Hedicke (1931) in adopting the name Eucera macroglossa Illiger, 1806 for this species based on two reported male syntypes that are preserved in the MNB. Dorchin & Michez (2024) have recently designated a neotype for Apis malvae under the principle of name stability, highlighting the importance of preserving this species name in its traditional sense and by showing morphological evidence. The name macroglossa became a junior synonym after the neotype designation by Dorchin & Michez (2024), and, in fact, it was already considered as a junior subjective synonym of Eucera antennata Fabricius, 1793, itself a proposed synonym of Apis malvae (Michener 1997) . The name Tetralonia malvae is therefore retained as part of this update of the European checklist.