Red Mason Bee (Osmia bicornis) - Detail

General
Species Profile

Species Detail - Red Mason Bee (Osmia bicornis) - Species information displayed is based on the dataset "Bees of Ireland".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).

Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).

Live Map

Species image

Scientific Name Osmia bicornis

Common Name Red Mason Bee

Taxon Version Key NHMSYS0000876509 RecommendedWell-formed

Synonyms Osmia (Osmia) bicornis (Linnaeus, 1758), Osmia (Osmia) rufa (Linnaeus, 1758), Osmia bicornis (Linnaeus), Osmia hedera [Genus inferred] Smith, 1844, Osmia rufa (Linnaeus, 1758), Osmia rufa (Linnaeus)

Designations N/A

Abbreviation osbic

Authority (Linnaeus, 1758)

Group Insect - hymenopteran

Rank Species

Number Of Records 352

Number Of 10Km Squares 104

Number Of 50Km Squares 46

Oldest Record 07/05/2003

Newest Record 23/05/2025

Phenology - earliest record (across all datasets) 26 March (recorded in 2019)

Phenology - latest record (across all datasets) 8 October (recorded in 2015)

Species Profiles

Citation Collated by the National Biodiversity Data Centre from different sources, Bees of Ireland, National Biodiversity Data Centre, Ireland, Red Mason Bee (Osmia bicornis), accessed 22 February 2026, https://maps.biodiversityireland.ie/Dataset/5/Species/57008

Species Detail - Red Mason Bee (Osmia bicornis) - Species information displayed is based on the dataset "Bees of Ireland".

Terrestrial Map - 10km

Marine Map - 50km

Species image

Records per month (across all datasets)

Records per year (across all datasets)