Integrated occurrence records of protected saproxylic beetles: Lucanus cervus (Linnaeus, 1758) (Coleoptera: Lucanidae), Morimus asper (Sulzer, 1776) sensu lato and Rosalia alpina (Linnaeus, 1758) (Coleoptera: Cerambycidae) in Bulgaria

Dataset comprising compiled presence records of Lucanus cervus (Linnaeus, 1758) (Coleoptera: Lucanidae), Morimus asper (Sulzer, 1776) sensu lato, and Rosalia alpina (Linnaeus, 1758), sourced from published literature, scientific studies, incidental expert observations, the National Museum of Natural History–Sofia collection (Bulgarian Academy of Sciences; NMNHS), and records shared in the Bulgarian Facebook group “The Insects and the Entomologists.” The dataset spans the period from the earliest faunistic publications for Bulgaria through 2025.