Reference

Martin Hallmen (2024-2025): At their northern border — New records of the Cuckoo Bumblebees Bombus bohemicus, Bombus norvegicus and Bombus sylvestris in the Varanger region (Finnmark, Norway) (Hymenoptera: Apidae, Bombus) – Nachrichten des Entomologischen Vereins Apollo – 45: 118 - 120.