"Bee species";n;N;"Origin (and number) of pollen loads";"% pollen grain volume (number of loads)";"Preferred host(s)";"% pollen grain volume of preferred host";"% pure loads of preferred host";"% loads with preferred host";"Host range" "Andrena (Andrena) fucata Smith, 1847";50;40;"CH (48), D (1), IT (1)";"ROS (other) 41.3% (34), ROS (Sanguisorba officinalis) 1.7% (2), ROS (cf. Potentilla) 0.4% (2), API 17.6% (16), CIS (Helianthemum) 16.6% (14), CAP (Lonicera) 4.3% (2), PLA (Plantago) 4.2% (7), BRA 2.8% (1), CAM 2.1% (1), POL (Polygonum bistorta) 2.0% (2), RAN 1.6% (1), ACE (Acer) 1.4% (1), AQU (Ilex) 1.0% (1), JUN 1.0% (2), COR (Cornus) 0.5% (1), AST (Carduoideae) 0.4% (1), ERI (Vaccinium) 0.4% (1), EUP (Euphorbia) 0.2% (1), SAN (Thesium) 0.2% (1), unknown 0.3% (2)";"Rosaceae, Apiaceae and Helianthemum";77.7%;58.0%;92.0%;"polylectic (17 plant families) with affinity for Rosaceae, Apiaceae and Helianthemum (Cistaceae)" "Andrena (Andrena) lapponica Morawitz, 1872";50;46;"CH (49), FL (1)";"ERI (Vaccinium) 75.7% (41), ERI (Rhododendron) 5.8% (5), ROS (cf. Potentilla) 0.9% (6), ROS (Geum) 0.6% (1), ROS (other) 2.1% (3), AST (Carduoideae) 2.4% (1), AST (Asteroideae) 0.4% (1), PYR (Moneses) 1.9% (1), CIS (Helianthemum) 1.5% (1), RAN 1.4% (1), PRI (Soldanella) 1.3% (2), OXA (Oxalis) 1.2% (3), SAL (Salix) 1.1% (4), CAR 0.8% (1), LIL 0.6% (1), PLA (Plantago) 0.4% (2), SAX (Saxifraga) 0.2% (1), ACE (Acer) 0.1% (1), LAM (Nepetoideae) 0.1% (1), GEN 0.1% (1), unknown 1.4% (4)";Ericaceae;81.5%;58.0%;92.0%;"polylectic (16 plant families) with strong preference for Ericaceae" "Andrena (Andrena) rogenhoferi Morawitz, 1872";50;47;"CH (42), A (3), D (2), F (2), FL (1)";"GEN (cf. Gentiana) 18.0% (12), SAX (Saxifraga) 17.2% (13), CIS (Helianthemum) 13.7% (12), ERI (Rhododendron) 9.3% (8), ERI (Vaccinium) 3.5% (2), SAL (Salix) 9.5% (7), ROS (Geum) 2.6% (3), ROS (cf. Potentilla) 0.1% (1), ROS (other) 4.8% (9), ACE (Acer) 7.1% (5), TIL (Tilia) 3.9% (4), API 3.4% (6), CAM 1.2% (4), RAN (Pulsatilla) 1.1% (1), BER (Berberis) 1.0% (2), CRA 0.5% (1), AST (Cichorioideae) 0.3% (2), BRA 0.2% (1), CAP (Lonicera) 0.2% (1), RHA (Frangula) 0.1% (1), unknown 2.3% (4)";–;–;–;–;"polylectic (17 plant families)" "Andrena (Cnemidandrena) freygessneri Alfken, 1904";50;29;"CH (43), IT (5), A (1), F (1)";"CRA (cf. Sempervivum) 78.2% (42), SAX (Saxifraga) 5.7% (8), CIS (Helianthemum) 5.5% (6), LAM (Nepetoideae) 2.4% (4), ROS (cf. Potentilla) 1.5% (4), ROS (other) 0.9% (2), AST (Asteroideae) 1.7% (4), ERI (Calluna) 1.2% (1), GEN 1.1% (2), BRA 0.9% (1), CAR 0.6% (3), unknown 0.3% (1)";Sempervivum;78.2%;54.0%;84.0%;"polylectic (10 plant families) with strong preference for Sempervivum (Crassulaceae)" "Andrena (Oreomelissa) coitana (Kirby, 1802)";50;41;"CH (44), A (4), D (1), FL (1)";"AST (Carduoideae) 10.2% (11), AST (Cichorioideae) 8.6% (14), AST (Asteroideae) 5.8% (8), CAM 24.2% (18), ROS (cf. Potentilla) 14.2% (19), ROS (Sanguisorba officinalis) 0.9% (1), ROS (other) 3.2% (5), CIS (Helianthemum) 6.0% (6), API 6.0% (8), SCR 5.7% (8), LAM (Lamioideae) 3.7% (4), LAM (Nepetoideae) 1.6% (3), ORO (cf. Euphrasia) 3.5% (5), CRA 2.6% (2), PLA (Veronica) 1.8% (3), PLA (Plantago) 0.6% (1), GEN 0.8% (1), RAN 0.3% (2), unknown 0.3% (5)";–;–;–;–;"polylectic (12 plant families)" "Panurginus herzi Morawitz, 1891";50;27;"CH (48), A (1), D (1)";"ROS (cf. Potentilla) 99.2% (50), CIS (Helianthemum) 0.5% (1), ERI (Vaccinium) 0.3% (1)";Potentilla;99.2%;96.0%;100%;"narrowly oligolectic on Potentilla (Rosaceae)" "Panurginus montanus Giraud, 1861";50;35;"CH (47), FL (3)";"ROS (cf. Potentilla) 50.4% (39), CIS (Helianthemum) 39.3% (31), RAN 2.8% (9), BRA 2.3% (3), ORO (cf. Euphrasia) 1.6% (2), CAR 1.5% (4), SAX (Saxifraga) 0.3% (1), CRA 0.3% (1), API 0.3% (1), AST (Cichorioideae) 0.2% (2), unknown 1.0% (1)";"Potentilla and Helianthemum";89.7%;66.0%;98.0%;"polylectic (10 plant families) with affinity for Potentilla (Rosaceae) and Helianthemum (Cistaceae)" "Dufourea alpina Morawitz, 1865";50;35;"CH (41), FL (9)";"CAM 80.1% (46), AST (Cichorioideae) 7.8% (22), ORO (cf. Euphrasia) 6.1% (10), CIS (Helianthemum) 2.7% (2), LAM (Nepetoideae) 1.7% (3), CAR 1.1% (4), LIN (Linum) 0.5% (1)";Campanulaceae;80.1%;42.0%;92.0%;"polylectic (7 plant families) with strong preference for Campanulaceae" "Dufourea paradoxa (Morawitz, 1867)";46;36;"CH (42), A (1), F (1), IT (2)";"CRA 26.4% (16), ORO (cf. Euphrasia) 24.7% (21), LAM (Nepetoideae) 12.6% (13), CIS (Helianthemum) 9.6% (9), AST (Cichorioideae) 4.9% (9), AST (Carduoideae) 2.4% (3), AST (Asteroideae) 2.0% (4), CAR 9.2% (14), GEN 4.2% (4), ROS (cf. Potentilla) 2.1% (5), PRI (Soldanella) 1.0% (1), SAX (Saxifraga) 0.5% (1), SAL (Salix) 0.1% (1), FAB 0.1% (1), CAM 0.1% (1), unknown 0.1% (1)";–;–;–;–;"polylectic (13 plant families)" "Megachile (Megachile) alpicola Alfken, 1924";50;50;"CH (40), A (1), D (9)";"FAB (Lotus) 33.3% (33), FAB (Trifolium) 3.2% (3), FAB (Genisteae) 2.7% (1), FAB (Medicago) 0.5% (2), FAB (Vicia/Lathyrus) 0.4% (1), FAB (other) 3.9% (3), AST (Cichorioideae) 13.2% (16), AST (Asteroideae) 12.8% (13), AST (Carduoideae) 4.4% (4), CIS (Helianthemum) 4.6% (7), ASP (Anthericum) 4.2% (1), BRA 2.7% (2), RAN 2.5% (4), CLU (Hypericum) 2.0% (3), CRA 2.0% (4), ORO (Odontites) 1.7% (1), PLA (Veronica) 1.5% (1), ALL (Allium) 1.3% (2), ROS (cf. Potentilla) 0.9% (2), DIP (Scabiosa) 0.8% (1), LAM (Nepetoideae) 0.4% (1), SAL (Salix) 0.2% (1), CAM 0.1% (1), unknown 0.7% (4)";"Fabaceae and Asteraceae";74.5%;44.0%;44%;"polylectic (16 plant families) with affinity for Fabaceae and Asteraceae" "Megachile (Xanthosarus) analis Nylander, 1852";50;49;"CH (48), D (1), IT (1)";"CAM 61.6% (36), FAB (Lotus) 25.0% (26), FAB (Hippocrepis) 5.1% (7), FAB (Onobrychis) 3.6% (2), CIS (Helianthemum) 3.1% (2), ORO (Odontites) 1.1% (1), RES (Reseda) 0.4% (1), CRA 0.1% (1)";"Campanulaceae and Fabaceae";95.3%;92.0%;100%;"mesolectic on Campanulaceae and Fabaceae" "Hoplitis (Anthocopa) villosa (Schenck, 1853)";50;46;"CH (44), F (4), A (1), D (1)";"AST (Cichorioideae) 72.8% (46), AST (Carduoideae) 22.4% (16), AST (Asteroideae) 0.3% (3), GER (Geranium) 2.4% (2), CIS (Helianthemum) 2.1% (5)";"Cichorioideae and Carduoideae";95.2%;88.0%;100%;"broadly oligolectic on Cichorioideae and Carduoideae (Asteraceae)" "Osmia (Helicosmia) labialis Pérez, 1879";50;48;"CH (46), D (2), F (2)";"AST (Carduoideae) 95.7% (48), AST (Cichorioideae) 2.6% (4), AST (Asteroideae) 1.5% (1), CIS (Helianthemum) 0.2% (1)";Carduoideae;95.7%;90.0%;96%;"broadly oligolectic on Carduoideae (Asteraceae)" "Osmia (Melanosmia) alticola Benoist, 1922";16;15;"CH (16)";"FAB (Lotus) 38.4% (12), FAB (Hippocrepis) 36.0% (7), FAB (Anthyllis) 8.8% (3), FAB (Trifolium) 5.5% (2), FAB (other) 11.1% (2), unknown 0.2% (1)";Fabaceae;99.8%;93.8%;100%;"broadly oligolectic on Fabaceae" "Osmia (Melanosmia) inermis (Zetterstedt, 1838)";50;43;"CH (41), A (7), D (2)";"FAB (Lotus) 70.4% (45), FAB (Hippocrepis) 20.0% (17), FAB (Anthyllis) 1.3% (3), ERI (Vaccinium) 5.0% (2), ROS (cf. Potentilla) 1.7% (1), LAM (Lamioideae) 1.6% (1)";"Loteae (Anthyllis, Hippocrepis, Lotus)";91.7%;92.0%;96.0%;"polylectic (4 plant families) with strong preference for Loteae (Fabaceae)" "Osmia (Melanosmia) parietina Curtis, 1828";50;44;"CH (50)";"FAB (Lotus) 61.6% (48), FAB (Hippocrepis) 22.5% (25), FAB (Trifolium) 7.4% (11), FAB (Anthyllis) 1.4% (2), LAM (Lamioideae) 2.4% (2), LAM (Nepetoideae) 1.5% (2), CIS (Helianthemum) 1.9% (2), ROS (cf. Potentilla) 1.0% (2), GEN 0.3 (1)";"Loteae (Anthyllis, Hippocrepis, Lotus)";85.5%;72.0%;100%;"polylectic (5 plant families) with strong preference for Loteae (Fabaceae)" "Osmia (Melanosmia) steinmanni Müller, 2002";15;6;"CH (14), F (1)";"FAB (Lotus) 61.9% (13), FAB (Hippocrepis) 34.4% (9), FAB (Trifolium) 1.5% (1), ERI (Rhododendron) 2.2% (1)";"Loteae (Hippocrepis, Lotus)";96.3%;86.7%;100%;"probably mesolectic on Fabaceae and Ericaceae with strong preference for Loteae (Fabaceae)" "Osmia (Melanosmia) uncinata Gerstaecker, 1869";50;41;"CH (43), D (4), A (1), FL (1), IT (1)";"FAB (Lotus) 46.4% (38), FAB (Hippocrepis) 11.4% (19), FAB (Trifolium) 7.9% (12), FAB (Onobrychis) 3.4% (3), FAB (Medicago) 2.8% (4), FAB (Vicia/Lathyrus) 1.9% (2), FAB (Anthyllis) 1.7% (1), FAB (other) 2.2% (6), ROS (cf. Potentilla) 3.6% (3), ROS (other) 6.3% (3), LAM (Lamioideae) 6.3% (5), LAM (Nepetoideae) 0.6% (1), PLA (Plantago) 1.3% (5), PLA (Veronica) 0.3% (1), ALL (Allium) 1.2% (2), RAN 0.8% (2), CAP (Lonicera) 0.7% (1), GEN 0.3% (1), BOR (Echium) 0.3% (1), CRA 0.1% (1), CIS (Helianthemum) 0.1% (1), unknown 0.4% (1)";Fabaceae;77.7%;56.0%;90.0%;"polylectic (11 plant families) with strong preference for Fabaceae" "Osmia (Melanosmia) xanthomelana (Kirby, 1802)";50;50;"CH (44), F (3), IT (3)";"FAB (Hippocrepis) 83.4% (49), FAB (Lotus) 16.6% (21)";"Hippocrepis and Lotus";100%;100%;100%;"narrowly oligolectic on Hippocrepis and Lotus (Fabaceae)"