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Human and animal vector-borne diseases, particularly mosquito-borne diseases, are emerging or re-emerging worldwide. Six Aedes invasive mosquito (AIM) species were introduced to Europe since the 1970s: Aedes aegypti, Ae. albopictus, Ae. japonicus, Ae. koreicus, Ae. atropalpus and Ae. triseriatus. Here, we report the results of AIMSurv2020, the first pan-European surveillance effort for AIMs. Implemented by 42 volunteer teams from 24 countries. And presented in the form of a dataset named “AIMSurv Aedes Invasive Mosquito species harmonized surveillance in Europe. AIM-COST Action. Project ID: CA17108”. AIMSurv2020 harmonizes field surveillance methodologies for sampling different AIMs life stages, frequency and minimum length of sampling period, and data reporting. Data include minimum requirements for sample types and recommended requirements for those teams with more resources. Data are published as a Darwin Core archive in the Global Biodiversity Information Facility- Spain, comprising a core file with 19,130 records (EventID) and an occurrences file with 19,743 records (OccurrenceID). AIM species recorded in AIMSurv2020 were Ae. albopictus, Ae. japonicus and Ae. koreicus, as well as native mosquito species. This study was funded by the Autonomous Province of Trento (Italy) under the project ‘Coordinated surveillance actions on invasive alien species and emerging vector borne diseases’; the City Health Office of the City of Zagreb, within the ‘Program for monitoring invasive mosquito species in the area of the City of Zagreb in 2020’; the Consejería de Economía e Infraestructura of the Junta de Extremadura and the European Regional Development Fund, a Way to Make Europe, through the research project IB16135; Dirección de Salud Pública (Gobierno Vasco), Project EU-LIFE 18 IPC/ES/000001 (Urban Klima 2050) y Programa Estatal de Vigilancia de mosquitos en puertos y Aeropuertos, del Ministerio de Sanidad (Gobierno de España); EMME-CARE project, which has been funded from the European Union’s Horizon 2020 Research and Innovation Programme (grant agreement ID 856612); Institute of Zoology under the project EVOLANTER (project no. 20.80009.7007.02). RL is funded by the Federal Ministry of Education and Research of Germany (BMBF) under the project NEED (grant no. 01Kl2022); LIFE CONOPS project (LIFE12 ENV/GR/000466), funded by the European Commission in the framework of the program LIFE + Environment Policy and Governance; Municipalities of Slovenia: City Municipality of Nova Gorica, City Municipality of Koper, Municipality of Izola, Municipality of Piran and Municipality of Ankaran; National Research, Development and Innovation Office (NKFIH grant numbers KH-130379, PD-135143, FK-138563 and K-135841). The research activity of KK was supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences and by the ÚNKP-20-5-PTE-597 New National Excellence Program of the Ministry for Innovation and Technology; Portuguese National Program for Vector Surveillance (REVIVE) and we are particularly grateful to the regional workgroup of Algarve for the monitoring activities; PR (19_ECO_0070) project ‘Aves y Enfermedades Infecciosas Emergentes: Impacto de las Especies Exóticas y Migratorias en la transmisión de Malaria aviar y el virus del Nilo Occidental – AvEIEs’ from ‘Ayudas Fundación BBVA a Equipos de Investigación Científica 2019’; project grant number 57 PCCDI/2018, grant agency ‘The Executive Unit for Financing Higher Education, Research, Development and Innovation’ (UEFISCDI) Romania, ‘Collegium Talentum Programme’ of Hungary, Eötvös Loránd University’s ‘Homeland higher education study grant’; Slovak Research Agency VEGA nr. 2/0140/21; Vector Control Needs Assessment in Cyprus, contracted by the World Health Organization (reference 2020/1040069-0); Veneto and Friuli Venezia Giulia Regions (Regional Prevention Plans ‘Entomological Surveillance of vector-borne diseases’ in the Veneto and Friuli Venezia Giulia Regions); the Institute of Public Health, Albania under the program of mosquitoes control in urban and coastal areas.

Additional file 1: Table S1. Results of the generalized linear model.

Biodiversity declines in an unprecedented way, mostly due to land use change. Restoration interventions proved to be one of the most effective tools to halt the decline, especially in ecosystems such as agricultural fields. Evidence-based, locally adapted recommendations on grassland restoration, however, are often missing, so we present a novel approach for such interventions that can be implemented anywhere and that are based on scientific rigor. In a recently started long-term field ecological study, we established 0.5 ha wildflower parcels, using a diverse local seed mixture of 32 insect-visited plant species in Central European agricultural landscapes in 2020. Our focus is on the landscape-scale effects of this ecological intensification on ecosystem services such as crop yield, pollination and pest control, and the long-term monitoring of the successional processes. The aim is to showcase an effective restoration protocol that could serve as a model for future farm management, and provide much-needed evidence for policy on landscape ecological restoration of international relevance.

Table S1. Primers used to generate a nearly full-length sequence of a newly-described Alphamesonivirus 1 (Mesoniviridae) in Uranotaenia unguiculata mosquitoes found in Austria. (DOCX 20 kb)

New data on distribution in the Palaearctic Region for three species of flies of the family Hybotidae are provided. Allanthalia pallida (Zetterstedt, 1838) is recorded for the first time from Yakutia (Eastern Siberia) and Leptodromiella crassiseta (Tuomikoski, 1932) — from the Russian Far East (Amurskaya Province). The following new synonym is proposed: Chvalaea rugosiventris (Strobl, 1910) = Chvalaea sopianae Papp et Földvári, 2002, syn.n. Chvalaea rugosiventris is recorded for the first time from Eastern Siberia (Krasnoyarskiy Territory) and from the Russian Far East (Primorskiy Territory). The latter species is re-described and illustrated. All distributional data on these species are mapped.