Seoul is combating a massive emergence of lovebug larvae that have covered parts of the city in black [1].

The infestation has triggered a public health response as the insects thrive in damp, dark environments, leading to widespread urban discomfort.

City officials said they received thousands of citizen complaints regarding the surge [1]. Survey data indicates that nine out of 10 citizens feel disgust toward the insects [1]. The rapid population growth is driven by the reproductive capacity of the species, with a single female capable of laying up to 500 eggs [1].

To manage the outbreak, the city has initiated a pesticide campaign using Bacillus thuringiensis israelensis, known as Bti. This biological agent targets the larvae specifically.

"Citizens are feeling a lot of discomfort, so we are responding to that discomfort with such a [control] plan," said Song Eun-cheol, head of the Seoul Metropolitan Government's Infectious Disease Control Division [2].

Research into the efficacy of the treatment shows significant results. Kim Dong-gun, director of the Environmental Ecology Research Institute at Sahmyook University, said that 98% of larvae die within 48 hours of Bti treatment [2].

The larvae are particularly prevalent in moist areas. A field reporter said the insects are found in large quantities in damp locations because they prefer those environments [2].

The city continues to monitor the emergence patterns to prevent further disruptions to daily life in the capital during the summer months [1].

“98% of larvae die within 48 hours of Bti treatment”

The scale of the lovebug surge in Seoul highlights the vulnerability of dense urban environments to rapid insect population spikes when environmental conditions, such as dampness and warmth, are optimal. The reliance on Bti suggests a shift toward biological control methods that target specific larvae to minimize broader ecological damage while addressing intense public pressure for immediate relief.