[EN] Gwangju News October 2020 #224

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Gwangju City News

MONTHLY NEWS

Reprinted with permission from Gwangju Metropolitan City Hall

www.gwangjunewsgic.com

October 2020

Big-Data Analysis on the Appearance of Wasps

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ouble-killer wasps, the Asian hornets... There are many types of wasps. On September 4, the Gwangju Fire Department issued a warning on wasp and bee stings. Be careful during outdoor activities.

wasps, in 20 cases (1%) they were common bees, and 264 cases (16%) were those of other bees and red-banded sand wasps.

In order to prevent the annual increase in wasp and bee sting incidents, the Gwangju Fire and Safety Headquarters analyzed big data on the period of different types of wasp and bee appearance, and asked the public to be cautious. The results of the analysis show that they are most active in mating, nurturing queen bees, and raising caterpillars when the weekly average maximum temperature is around 27–28 degrees Celsius.

The big-data analysis showed that the number of doublekiller wasps increased from April to 53 in June, 139 in July, and jumped dramatically to 537 in August, while the number of black wasps and hornets started appearing in May, and gradually increased to 43 in June, 231 in July, and climbed to 336 in August with a continued increase forecast until October. The Asian giant hornets began to appear in July and are predicted to appear regularly around the September–October period.

So far this year, the total number of hive-removal dispatches in Gwangju has been 1,665, with most of them belonging to wasp’s species (1,381). Among these, 749 were double-killer wasps (45%), 344 were exotic Asian hornets or black wasps (20.7%), 281 were hornets (17%), and 7 were Asian giant hornets (0.4%). In addition to

The most frequently reported double-killer wasps are the most common in Korea, while the exotic species of Asian hornets (black wasps) that are usually seen in urban areas pose a great danger to citizens due to the fact that they build their hives on roadside trees or apartment roofs. In particular, Asian giant hornets are the most poisonous,

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