Check List 18(3): 535-543, doi: 10.15560/18.3.535
The alien Black-and-yellow Mud Dauber, Sceliphron caementarium (Drury, 1773) (Hymenoptera, Sphecidae), continues its spread: new citizen-science records from Eastern Europe and the Balkans
expand article infoJakovos Demetriou§, Joan Díaz-Calafat|, Konstantinos Kalaentzis#, Christos Kazilas#, Christos Georgiadis¤«, Giuseppe Fabrizio Turrisi», Evangelos Koutsoukos˄˅
‡ Joint Services Health Unit Cyprus, BFC RAF Akrotiri, Limassol, Cyprus§ Enalia Physis Environmental Research Centre, Nicosia, Cyprus| Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden¶ Naturalis Biodiversity Center, Leiden, Netherlands# Institute of Biology, Leiden University, Sylvius Laboratory, Leiden, Netherlands¤ Zoological Museum of the University of Athens, Zografou, Greece« National and Kapodistrian University of Athens, Zografou, Greece» Via Cristoforo Colombo, 8, I-95030, Pedara, Catania, Italy, Catania, Italy˄ Section of Ecology and Systematics, Department of Biology, National and Kapodistrian University of Athens, Athens, Greece˅ Museum of Zoology, National and Kapodistrian University of Athens, Athens, Greece
Open Access

The Nearctic Sceliphron caementarium (Drury, 1773) is widely distributed in the Western Palearctic and is spreading to new territories. Despite the large quantities of data on citizen-science platforms, these records have been mostly overlooked. In this publication, the first records of S. caementarium from six Eastern European and Balkan countries (Albania, Greece, Montenegro, Poland, Serbia, and Slovakia) are presented. Data derived from online citizen-science observations and museum specimens supplement our knowledge of this species’ range. The distribution of this species in Europe and possible ecological implications are discussed.

alien species, biological invasions, citizen science, first record, Western Palearctic