Updates to the checklist of the wild bee fauna of Luxembourg as inferred from revised natural history collection data and fieldwork Author Herrera Mesias, Fernanda Department of Animal Ecology, Evolution and Biodiversity, Ruhr-Universitaet Bochum, Bochum, Germany & Musee national d'histoire naturelle de Luxembourg, Luxembourg, Luxembourg fernanda.herreramesias@rub.de Author Weigand, Alexander M. https://orcid.org/0000-0001-7587-6531 Musee national d'histoire naturelle de Luxembourg, Luxembourg, Luxembourg alexander.weigand@mnhn.lu text Biodiversity Data Journal 2021 2021-05-14 9 64027 64027 http://dx.doi.org/10.3897/BDJ.9.e64027 journal article http://dx.doi.org/10.3897/BDJ.9.e64027 1314-2828-9-e64027 A81147BCF3A35316BE551B75987017AC Sphecodes majalis ( Perez , 1903) Sphecodes majalis Common names: Sphecode de mai (French), Kortsnuitbloedbij (Dutch), Mai-Blutbiene (German). Materials Type status: Other material . Occurrence : catalogNumber: MNHNL100057 ; sex: male ; lifeStage: adult ; associatedSequences: BOLD: MNHNL163-21; Taxon : scientificName: Sphecodes majalis ( Perez , 1903); order: Hymenoptera ; family: Halictidae ; genus: Sphecodes ; specificEpithet: majalis; taxonRank: species; scientificNameAuthorship: ( Perez , 1903); vernacularName: Sphecode de mai (French), Kortsnuitbloedbij (Dutch), Mai-Blutbiene (German); Location : country: Luxembourg ; locality: Manternach ; decimalLatitude: 49.710039 ; decimalLongitude: 6.430916 ; Identification : identifiedBy: Fernanda Herrera-Mesias ; Event : samplingProtocol: pan trap (passive sampling) ; eventDate: 28-04-2019 ; Record Level: institutionCode: MNHNL; basisOfRecord: Preserved Specimen Diagnosis Male: A medium sized Sphecodes species (6-8 mm) (Fig. 5 a and b). Flagellar segments of the antenna longer than broad, without pubescence in the front side (Fig. 5 c). The hind tibia present red spines on its upper side amongst a covering of pale hairs (Fig. 5 d). The punctures on tergites 4 and 5 are subtle and very sparsely distributed, presenting fine sculpture amongst them (Fig. 5 e). The gonocoxites lack any impression and the gonostyli have a rounded edge (Fig. 5 f). Voucher specimen (MNHNL100057; BOLD identifier MNHNL163-21): Adult male. Body length of 7.19 mm. Molecular identification The taxonomic annotation is supported by DNA barcoding data. A perfect match of genetic sequence similarity was achieved with a specimen of Sphecodes majalis from France (100%; BOLD identifier POLLE1165-19), collected in Loir et Cher. Ecology A rare cuckoo bee that inhabits steppes and sunny sites, flying only during a short time span in spring from late March until mid-May, matching the flight season of Lasioglossum pallens ( Brulle , 1832), its only known host in Europe ( Amiet et al. 2007 , Bogusch and Straka 2012 ). Conservation Sphecodes majalis is classified as "Near Threatened (NT)" ( Nieto et al. 2014 ). Records of this bee and its host are scarce and the populations of both are described as locally decreasing ( Bogusch and Straka 2014 ).