Improving allometric models to estimate the proboscis length of tropical bees. - Frühholz, Kilian; Kuba, Kenneth; Pitz, Maximilian; Windl, Julia; Keller, Alexander; Brehm, Gunnar; Rasmussen, Claus; Leonhardt, Sara Diana; Diniz, Ugo Mendes (Biological Journal of the Linnean Society, 2025)