Giant 'toe biter' water bugs discovered in Cyprus for the 1st time

Giant water bugs that can deliver painful bites are invading the Mediterranean island of Cyprus, a study has found.

The bugs, also called "toe biters," belong to the Lethocerus genus, which includes bird-eating species that can grow to around 4.7 inches (12 centimeters) long. Researchers discovered the fearsome bugs with the help of swimmers on the island's east coast and warned the public to look out for more.

"Cypriots should keep their eyes open and their toes out of the water," the study authors said in a statement on March 20.  The researchers presented their findings in a study published Dec. 31, 2023, in the Journal of "Grigore Antipa" National Museum of Natural History.

Giant water bugs live in freshwater habitats such as ponds and marshes around the world, according to the National Park Service. They're equipped with pincer-like appendages and venomous saliva, which allows them to immobilize and suck the liquid out of their prey. These bugs are also known to bite unsuspecting humans between the toes, hence why they're called "toe-biters," though this bite is nontoxic and we're far too big to be their prey.

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Lethocerus is found near Cyprus in the mainland countries of Turkey, Lebanon, Israel and Egypt but has never before been observed on the island. In the new study, the team looked at posts on local Facebook groups between 2020 and 2021 to collect records of the bugs and learn more about their sudden arrival.

"The records reported in this study were based almost entirely on people who posted photographs and videos on social media groups requesting species determination," the authors wrote in the study.