What is a tiger mosquito? The Asian tiger mosquito (Aedes albopictus) is an invasive species that has spread worldwide and is increasingly causing problems, particularly in the warmer regions of Europe. These mosquitoes can transmit dangerous diseases such as dengue fever, chikungunya, and Zika. In this article, you will learn what tiger mosquitoes look like, why they are spreading so rapidly across Europe, and which effective measures can be taken to control these pests.
The Asian tiger mosquito is considered particularly problematic because it adapts extremely well to urban environments. It uses even the smallest collections of water—such as plant pot saucers, rain barrels, or blocked gutters—to lay its eggs, allowing it to find ideal breeding conditions even in densely populated areas. It is also active during the day and highly aggressive in its biting behaviour, which significantly increases the likelihood of being bitten.
In terms of health risks, the main concerns arise from its ability to transmit various viruses, provided these are circulating in a given region. Cases of diseases transmitted by this mosquito are increasing, particularly in the Mediterranean region. There, people no longer ask what a tiger mosquito is, as they are already widespread. [1] Rising temperatures and milder winters are also facilitating their permanent establishment in the UK.
The Asian tiger mosquito is relatively small and characterised by a black body with distinctive white stripes. Particularly noticeable is the silvery-white line that runs from the head to the thorax (Figure 1 A–C). These distinctive features make it relatively easy to identify the tiger mosquito, though it can be confused with other mosquito species in some respects.
For example, in Central Europe, the large house mosquito, also known as the banded mosquito (Culiseta annulata), is found in many residential areas. It is dark brown, has distinctly banded legs, a banded abdomen, and spotted wings (Figure 1 D). It is therefore not always easy to recognise the difference in everyday situations.
Tip: Not all striped mosquitoes are tiger mosquitoes. Look closely, especially for the distinctive line on the head and thorax.
The Asian tiger mosquito thrives in warm, humid climates and has found new habitats in Europe through global trade, particularly via the transport of goods and vehicles. In addition, mild winters and increasing urbanisation are facilitating its spread. What may seem like small collections of water in plant pots to us can become ideal breeding sites for tiger mosquitoes.
Sadly, the question should no longer just be what a tiger mosquito is, but rather how they can be controlled. Over the past 30 years, the Asian tiger mosquito has spread rapidly worldwide and has now reached many municipalities in the UK.
Control requires not only mosquito traps but also targeted measures to limit their spread and breeding sites. Everyone can contribute to a safer environment by taking the following preventive steps:
Standing water in buckets, pots, watering cans, birdbaths, and similar containers provides excellent breeding sites for tiger mosquitoes. All containers should therefore be stored in a way that prevents water from accumulating. For example, they can be kept in a sheltered area, covered with a tarpaulin, stored in a box, or placed upside down. Plant pot saucers should be filled with sand or gravel to prevent larvae from developing there.
Empty water containers at least once a week. If you pour the contents onto a flower bed, for example, any mosquito larvae present in the water will die as they dry out. As eggs are often laid along the inner rim of the container above the water line, you should also scrub these areas or pour very hot water over them.
Seal your water storage containers (rain barrels, cisterns) securely with a tightly fitting, fine mesh cover or a lid. Any structures that prevent proper sealing—such as overflows, gutters, or drainpipes that extend into the rain barrel—should be removed. Tiger mosquitoes can make use of even the smallest openings.
Some water reservoirs cannot be effectively covered or emptied regularly (e.g. drains, cisterns or rain barrels). While biological larvicides such as Bti require regular reapplication, Biogents HYDRO FILM offers an insecticide-free alternative. Its physical surface barrier interrupts the mosquito life cycle and provides protection for up to 8 weeks with a single application, reducing both maintenance and treatment frequency.
HYDRO FILM
The use of mosquito traps, such as the AERO TRAP or BG-Mosquitaire, is one of the most effective methods for controlling tiger mosquitoes. These traps mimic humans and capture the mosquitoes before they can bite. The BG-GAT trap imitates a breeding site and prevents reproduction.
AERO TRAPWhat is a tiger mosquito? – Report any suspicious mosquito that does not originate from the control area:
You can always submit photographs of the mosquito in question. Good image quality and a clear view of the back are important.
The Asian tiger mosquito is not only a nuisance but also poses a serious threat to public health. Controlling it requires active participation from everyone, as these mosquitoes primarily spread through standing water in private gardens and public areas. Through preventive mosquito control measures, such as eliminating breeding sites and using mosquito traps, we can work together to help stop the spread of the tiger mosquito and protect ourselves from the associated health risks.
Dr. Carolin Degener studied biology at the University of Regensburg and completed a PhD at the Federal University of Minas Gerais in Belo Horizonte, Brazil. She first worked with Biogents as a student, supporting laboratory and field repellent studies. Her doctoral research focused on mass trapping the yellow fever mosquito (Aedes aegypti) using BG-Sentinel traps and MosquiTRAPs. She later joined the Fiocruz Institute in Rio de Janeiro as a postdoctoral researcher, contributing to a real-time dengue early-warning system for Brazilian municipalities. She rejoined Biogents in 2016, supporting product development, marketing, data analysis, and scientific writing. Since 2023, she has been part of the Product Management team, serving as Product Manager for the BG-Counter and providing technical and scientific support. Carolin is fluent in German, English, and Portuguese. She also has strong skills in Spanish and French. Scientific Publications 1. Degener, C.M., Staunton, K.M., Bossin, H. et al., Gordon, S.W. (2021). Evaluation of the New Modular Biogents BG-Pro Mosquito Trap in Comparison to CDC, EVS, BG-Sentinel, and BG-Mosquitaire Traps. Journal of the American Mosquito Control Association, 37(4): 224-241. 2. Degener, C.M., Geier, M., Kline, D., Urban, J., Willis, S., Ramirez, K., Cloherty, E.R., Gordon, S.W. (2019). Field trials to evaluate the effectiveness of the Biogents-Sweetscent lure in combination with several commercial mosquito traps and to assess the effectiveness of the Biogents-Mosquitaire trap with and without carbon dioxide. Journal of the American Mosquito Control Association, 35(1): 32-39. 3. Ferreira, D.A., Degener, C.M., Marques-Toledo, C.A., Bendati, M.M., Fetzer, L.O., Teixeira, C.P., Eiras, A.E. (2017). Meteorological variables and mosquito monitoring are good predictors for infestation trends of Aedes aegypti, the vector of dengue, chikungunya and Zika. Parasites & Vectors, 10(1). 4. Marques-Toledo, C.A., Degener, C.M., Vinhal, L. et al., Teixeira, M.M. (2017). Dengue prediction by the web: Tweets are a useful tool for estimating and forecasting Dengue at country and city level. PLoS Neglected Tropical Diseases, 11(7). 5. Degener, C.M., Azara, T.M.F., Roque, R.A., Codeco, C.T., Nobre, A.A., Ohly, J.J., Geier, M., Eiras, A.E. (2014). Temporal abundance of Aedes aegypti in Manaus, Brazil, measured by two trap types for adult mosquitoes. Memorias do Instituto Oswaldo Cruz. 6. Degener, C.M., Mingote Ferreira de Azara, T., Roque, R.A. et al., Eiras, A.E. (2015). Mass trapping with MosquiTRAPs does not reduce Aedes aegypti abundance. Memorias do Instituto Oswaldo Cruz, 110(4): 517-527. 7. Degener, C.M., Eiras, A.E., Azara, T.M.F. et al., Geier, M. (2014). Evaluation of the effectiveness of mass trapping with BG-sentinel traps for dengue vector control: a cluster randomized controlled trial in Manaus, Brazil. Journal of Medical Entomology, 51: 408-420. 8. Reis, I.C., Codeco, C.T., Degener, C.M. et al., Honorio, N.A. (2015). Contribution of fish farming ponds to the production of immature Anopheles spp. in a malaria-endemic Amazonian town. Malaria Journal, 14(1): 452. 9. Azara, T.M.F., Degener, C.M., Roque, R.A., Ohly, J.J., Geier, M., Eiras, A.E. (2013). The impact of CO2 on collection of Aedes aegypti (Linnaeus) and Culex quinquefasciatus Say by BG-Sentinel traps in Manaus, Brazil. Memorias do Instituto Oswaldo Cruz, 108: 229-232. 10. Figueiredo, R.M.P., Mourao, M.P.G., Abi-Abib, Y.E.C. et al., Degener, C. et al. (2013). Identification of dengue viruses in naturally infected Aedes aegypti females captured with BioGents (BG)-Sentinel traps in Manaus, Amazonas, Brazil. Revista da Sociedade Brasileira de Medicina Tropical, 46.
