Pollinators play a crucial role in ecosystems globally, ensuring the seed production of most flow... more Pollinators play a crucial role in ecosystems globally, ensuring the seed production of most flowering plants. They are threatened by global changes and knowledge of their distribution at the national and continental levels is needed to implement efficient conservation actions, but this knowledge is still fragmented and/or difficult to access. As a step forward, we provide an updated list of around 3000 European bee and hoverfly species, reflecting their current distributional status at the national level (in the form of present, absent, regionally extinct, possibly extinct or non‐native). This work was attainable by incorporating both published and unpublished data, as well as knowledge from a large set of taxonomists and ecologists in both groups. After providing the first National species lists for bees and hoverflies for many countries, we examine the current distributional patterns of these species and designate the countries with highest levels of species richness. We also sho...
HAL (Le Centre pour la Communication Scientifique Directe), Mar 26, 2019
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
HAL (Le Centre pour la Communication Scientifique Directe), Apr 5, 2016
National audienceLes prairies permanentes hébergent une diversité d’organismes microbiens, végéta... more National audienceLes prairies permanentes hébergent une diversité d’organismes microbiens, végétaux et animaux qui tous émettent dans l’atmosphère des composés organiques volatils (COV). Il en résulte un paysage chimique qui contient des informations inexplorées sur le statut biotique des prairies et les services écosystémiques qu’elles rendent. Nous avons mesuré in situ le paysage chimique de deux prairies permanentes par micro extraction en phase solide GC-MS, durant 2 périodes de 3 jours en juillet et dans 3 mises en défens par prairie. Nous avons obtenu des profils riches en COV (67 composés au total) avec une proportion faible de terpènes. La différence de paysages chimiques entre les deux pâtures s’est avérée plus faible que ce que nous attendions au regard de la diversité végétale contrastée entre les deux prairies. Nous avons néanmoins mis en évidence quelques COV caractéristiques de l’une ou l’autre des prairies. Nous avons également montré un effet significatif de la période sur beaucoup de COV, pouvant s’expliquer par un effet combiné des conditions climatiques, plus favorables en deuxième période, de l’évolution du stade phénologique des plantes et du prélèvement par les vaches. Enfin, nous avons identifié des COV corrélés positivement ou négativement à la présence d’insectes pollinisateurs. Nous avons ainsi démontré qu’il est possible d’obtenir le paysage chimique d’une prairie et que ce paysage semble effectivement riche en information. Il nous faut à présent augmenter la puissance analytique et statistique de la méthode pour obtenir des pics plus intenses et des corrélations plus nettes avec les insectes. Ces améliorations pourraient nous donner accès à d’autres indicateurs de services écosystémiques comme la qualité des produits, l’activité microbienne du sol, la présence de parasites des animaux domestiques etc., ouvrant ainsi la voie à un outil d’évaluation multicritère des prairies
Besides supporting cattle feeding, grasslands are home to a diversity of plants and insects that ... more Besides supporting cattle feeding, grasslands are home to a diversity of plants and insects that interact with each other by emitting volatile compounds. The aim of this work was to develop a method to determine permanent grassland odorscape and relate it to flower-visit-ing insects. Two grasslands were chosen for their contrasting levels of botanical diversity, resulting from differing grazing managements. Measurements were made over two periods of three consecutive days at the beginning of grazing, and just after the cows had left the plots. Volatile compounds were trapped using solid-phase microextraction (SPME) fibers exposed eight hours a day in three exclosures per plot, and then analyzed by gas-chroma-tography-mass spectrometry (GC-MS). Insects were trapped using pan traps and a net, sorted and counted. The open air SPME method yielded volatile compound profiles that were richer than maize field profiles, comprising the common green leaf volatiles (GLV) and more specific ones...
Semi natural grasslands are considered as a vital habitat for wild pollinators, which in return c... more Semi natural grasslands are considered as a vital habitat for wild pollinators, which in return contribute to preserve the floristic diversity of this environment. To study the interactions between pollinators and plants, flower-foraging insects were caught from beginning of May to end of June along walking transects in 6 mountain permanent grasslands in Cantal (France). We developed and test in parallel a method based on DNA barcoding analysis, allowing a quick identification of the insect and its pollen load at the same time. We collected thus 394 flower visitor insects, most of them belonging to Diptera (72%) of which comprised 32% Empididae and 20% Syrphidae, and 20 % belonging to Hymenoptera of which 80% were wild native and domestic bees. Three families of flowers (Asteraceae, Apiaceae and Ranunculaceae) comprised two thirds of the total flowering species from which the insects were collected. DNA barcoding of these insects showed that 87% of the collected insects were carryin...
Plants, insects and microorganisms are the protagonists of the ecosystem services provided by per... more Plants, insects and microorganisms are the protagonists of the ecosystem services provided by permanent grasslands. All of them emit volatile organic compounds (VOCs) to communicate. The result is a chemical landscape, also called odorscape. To explore this pool of information and enhance our understanding on the process behind the ecosystem services, we trapped volatile compounds on two mountain permanent pastures chosen for their contrasting grazing and fertilisation management. Measurements were made in July over two periods of three consecutive days using solid-phase microextraction (SPME) fibers fixed on sticks. The VOCs adsorbed on the fibers were then analyzed by gas-chromatography-mass spectrometry (GC-MS). We also recorded floristic composition, trapped the pollinator insects and took pictures of the canopy to quantify grassland colors using image analysis. We obtained rich and complex VOC profiles. They contained a total of 67 peaks corresponding to VOCs belonging to vario...
Preliminary list of the bees of the Franche-Comté region (Hymenoptera, Anthophila). - This work s... more Preliminary list of the bees of the Franche-Comté region (Hymenoptera, Anthophila). - This work synthesizes the knowledge of Hymenoptera Anthophila of our region, with the aim to establish the first list of species to assess regional biodiversity. Begun in 2016, it summarizes historical data contained in the collections of the Besançon Natural History Muséum, and extends to other data obtained throughout decades by multiple naturalist associations (OPIE-FC, CBNFC-ORI, CEN-FC, Réserves Naturelles…), educational institutions (LEGTA de Mancy et Montmorot, Lons-le Saunier, Jura), independent consultancy firms (ECOJURA Environnement-Insectes) and targeted contemporary research. Specific determinations were verified and validated in collaboration with several specialists, such as David Genoud, Éric Dufrêne, Matthieu Aubert and Christophe Praz, to whom we would like to express here our gratitude. The present work shows the presence of 275 species from the former Franche-Comté region : 189 ...
A total of 95 bee species have been recorded from the Maltese Islands (central Mediterranean Sea)... more A total of 95 bee species have been recorded from the Maltese Islands (central Mediterranean Sea). The aim of the present note is to report newly recorded species within the study area. A total of nine new species belonging to four families are recorded here: Andrenidae (1 species), Apidae (1 species), Halictidae (5 species), and Megachilidae (2 species).
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
Pollinators play a crucial role in ecosystems globally, ensuring the seed production of most flow... more Pollinators play a crucial role in ecosystems globally, ensuring the seed production of most flowering plants. They are threatened by global changes and knowledge of their distribution at the national and continental levels is needed to implement efficient conservation actions, but this knowledge is still fragmented and/or difficult to access. As a step forward, we provide an updated list of around 3000 European bee and hoverfly species, reflecting their current distributional status at the national level (in the form of present, absent, regionally extinct, possibly extinct or non‐native). This work was attainable by incorporating both published and unpublished data, as well as knowledge from a large set of taxonomists and ecologists in both groups. After providing the first National species lists for bees and hoverflies for many countries, we examine the current distributional patterns of these species and designate the countries with highest levels of species richness. We also sho...
HAL (Le Centre pour la Communication Scientifique Directe), Mar 26, 2019
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
HAL (Le Centre pour la Communication Scientifique Directe), Apr 5, 2016
National audienceLes prairies permanentes hébergent une diversité d’organismes microbiens, végéta... more National audienceLes prairies permanentes hébergent une diversité d’organismes microbiens, végétaux et animaux qui tous émettent dans l’atmosphère des composés organiques volatils (COV). Il en résulte un paysage chimique qui contient des informations inexplorées sur le statut biotique des prairies et les services écosystémiques qu’elles rendent. Nous avons mesuré in situ le paysage chimique de deux prairies permanentes par micro extraction en phase solide GC-MS, durant 2 périodes de 3 jours en juillet et dans 3 mises en défens par prairie. Nous avons obtenu des profils riches en COV (67 composés au total) avec une proportion faible de terpènes. La différence de paysages chimiques entre les deux pâtures s’est avérée plus faible que ce que nous attendions au regard de la diversité végétale contrastée entre les deux prairies. Nous avons néanmoins mis en évidence quelques COV caractéristiques de l’une ou l’autre des prairies. Nous avons également montré un effet significatif de la période sur beaucoup de COV, pouvant s’expliquer par un effet combiné des conditions climatiques, plus favorables en deuxième période, de l’évolution du stade phénologique des plantes et du prélèvement par les vaches. Enfin, nous avons identifié des COV corrélés positivement ou négativement à la présence d’insectes pollinisateurs. Nous avons ainsi démontré qu’il est possible d’obtenir le paysage chimique d’une prairie et que ce paysage semble effectivement riche en information. Il nous faut à présent augmenter la puissance analytique et statistique de la méthode pour obtenir des pics plus intenses et des corrélations plus nettes avec les insectes. Ces améliorations pourraient nous donner accès à d’autres indicateurs de services écosystémiques comme la qualité des produits, l’activité microbienne du sol, la présence de parasites des animaux domestiques etc., ouvrant ainsi la voie à un outil d’évaluation multicritère des prairies
Besides supporting cattle feeding, grasslands are home to a diversity of plants and insects that ... more Besides supporting cattle feeding, grasslands are home to a diversity of plants and insects that interact with each other by emitting volatile compounds. The aim of this work was to develop a method to determine permanent grassland odorscape and relate it to flower-visit-ing insects. Two grasslands were chosen for their contrasting levels of botanical diversity, resulting from differing grazing managements. Measurements were made over two periods of three consecutive days at the beginning of grazing, and just after the cows had left the plots. Volatile compounds were trapped using solid-phase microextraction (SPME) fibers exposed eight hours a day in three exclosures per plot, and then analyzed by gas-chroma-tography-mass spectrometry (GC-MS). Insects were trapped using pan traps and a net, sorted and counted. The open air SPME method yielded volatile compound profiles that were richer than maize field profiles, comprising the common green leaf volatiles (GLV) and more specific ones...
Semi natural grasslands are considered as a vital habitat for wild pollinators, which in return c... more Semi natural grasslands are considered as a vital habitat for wild pollinators, which in return contribute to preserve the floristic diversity of this environment. To study the interactions between pollinators and plants, flower-foraging insects were caught from beginning of May to end of June along walking transects in 6 mountain permanent grasslands in Cantal (France). We developed and test in parallel a method based on DNA barcoding analysis, allowing a quick identification of the insect and its pollen load at the same time. We collected thus 394 flower visitor insects, most of them belonging to Diptera (72%) of which comprised 32% Empididae and 20% Syrphidae, and 20 % belonging to Hymenoptera of which 80% were wild native and domestic bees. Three families of flowers (Asteraceae, Apiaceae and Ranunculaceae) comprised two thirds of the total flowering species from which the insects were collected. DNA barcoding of these insects showed that 87% of the collected insects were carryin...
Plants, insects and microorganisms are the protagonists of the ecosystem services provided by per... more Plants, insects and microorganisms are the protagonists of the ecosystem services provided by permanent grasslands. All of them emit volatile organic compounds (VOCs) to communicate. The result is a chemical landscape, also called odorscape. To explore this pool of information and enhance our understanding on the process behind the ecosystem services, we trapped volatile compounds on two mountain permanent pastures chosen for their contrasting grazing and fertilisation management. Measurements were made in July over two periods of three consecutive days using solid-phase microextraction (SPME) fibers fixed on sticks. The VOCs adsorbed on the fibers were then analyzed by gas-chromatography-mass spectrometry (GC-MS). We also recorded floristic composition, trapped the pollinator insects and took pictures of the canopy to quantify grassland colors using image analysis. We obtained rich and complex VOC profiles. They contained a total of 67 peaks corresponding to VOCs belonging to vario...
Preliminary list of the bees of the Franche-Comté region (Hymenoptera, Anthophila). - This work s... more Preliminary list of the bees of the Franche-Comté region (Hymenoptera, Anthophila). - This work synthesizes the knowledge of Hymenoptera Anthophila of our region, with the aim to establish the first list of species to assess regional biodiversity. Begun in 2016, it summarizes historical data contained in the collections of the Besançon Natural History Muséum, and extends to other data obtained throughout decades by multiple naturalist associations (OPIE-FC, CBNFC-ORI, CEN-FC, Réserves Naturelles…), educational institutions (LEGTA de Mancy et Montmorot, Lons-le Saunier, Jura), independent consultancy firms (ECOJURA Environnement-Insectes) and targeted contemporary research. Specific determinations were verified and validated in collaboration with several specialists, such as David Genoud, Éric Dufrêne, Matthieu Aubert and Christophe Praz, to whom we would like to express here our gratitude. The present work shows the presence of 275 species from the former Franche-Comté region : 189 ...
A total of 95 bee species have been recorded from the Maltese Islands (central Mediterranean Sea)... more A total of 95 bee species have been recorded from the Maltese Islands (central Mediterranean Sea). The aim of the present note is to report newly recorded species within the study area. A total of nine new species belonging to four families are recorded here: Andrenidae (1 species), Apidae (1 species), Halictidae (5 species), and Megachilidae (2 species).
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana ... more We revise the Alpine bee taxa related to Andrena bicolor (Fabricius, 1775), including A. montana Warncke, 1973 and A. allosa Warncke, 1975, the status of which has remained contentious. Phylogenetic analyses of one mitochondrial gene and one nuclear gene, as well as morphological examination reveal the presence of four Alpine species in this complex, one of which is new to science, A. amieti sp. n. This new species is widely distributed in the Alps from southern France throughout Switzerland, northern Italy and southern Germany to Austria; a single record is known from the Apennines. The type locality is located within the Unesco World Heritage site "Swiss Alps Jungfrau-Aletsch". Two widely divergent mitochondrial lineages are found in sympatry in A. amieti sp. n.; the status of these lineages, which together form a paraphyletic unit from which A. allosa arose, is briefly discussed. We show that A. allosa, A. amieti sp. n. and A. montana are polylectic but that each species exhibits a distinct spectrum of pollen hosts: the univoltine A. allosa shows affinities for pollen of the early-blooming Alpine plant genus Crocus. A. amieti sp. n. is bivoltine and, as in A. bicolor, the summer generation exhibits a distinct preference for Campanulaceae, while the spring generation is widely polylectic. A. montana has a single generation in the summer and forages on a diversity of flowers such as Campanulaceae, Cistaceae and Caryophyllaceae. An identification key is presented for central European members of the subgenus Euandrena Hedicke, 1932. Lastly, the new Alpine species appears to represent the tip of the iceberg of substantial cryptic diversity in southern European Andrena (Euandrena): A. croatica Friese, 1887 is resurrected from synonymy with A. bicolor and treated as a valid species (stat. rev.), A. pileata Warncke, 1875, described as a subspecies of A. allosa, is elevated to species rank (stat. n.), and three additional unclear taxa are briefly described.
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