As the warm evenings of late spring and early summer approach, so too do the May bugs, or cockchafers, known scientifically as Melolontha melolontha. These intriguing beetles are a common sight in Cornwall and across the UK, often seen buzzing clumsily around lights at dusk. Understanding these creatures is the first step in managing any potential issues they might cause.
What are May Bugs?
May bugs, named for their peak activity period in May and June, are large beetles, typically 25 to 30 mm long, with distinctive fan-shaped antennae. Their robust bodies are covered with reddish-brown elytra (wing cases), and they have six legs equipped with sharp claws, aiding in their gripping ability.
Life Cycle of the May Bug
May bugs have a fascinating life cycle that spans three to four years, encompassing several stages:
- Eggs: Female May bugs lay their eggs in the soil, favouring grassy areas like lawns and meadows.
- Larvae: After hatching, the larvae, known as “white grubs,” spend up to three years underground. These grubs are notorious for feeding on plant roots, which can cause significant damage to crops and gardens.
- Pupae: Following their lengthy larval stage, the grubs pupate in the soil, emerging as adult beetles.
- Adults: Adult May bugs surface from the soil in late spring. Their primary activities include feeding on leaves, mating, and laying eggs to start the cycle anew.
Where Do You Find May Bugs?
In Cornwall, May bugs are typically found in rural and suburban areas with plenty of vegetation. They are nocturnal, so you’re most likely to encounter them at dusk. Look for them in gardens, fields, and woodland edges, especially near light sources, which they find irresistible.
The Impact of May Bugs
While the adult May bugs might be an occasional nuisance, it is their larvae that can cause the most trouble. The larvae’s appetite for roots can lead to brown patches in lawns and weakened plants. This is particularly problematic for farmers and gardeners who rely on healthy crops and plants.
Managing May Bugs
Controlling May bug populations can be challenging due to their underground larval stage. Here are a few tips to help manage their presence:
- Regular Inspection: Check your garden regularly for signs of larvae. Look for brown patches or weakened plants.
- Beneficial Nematodes *: These microscopic organisms can be introduced into the soil to target and kill May bug larvae.
- Light Management: Reduce outdoor lighting during May and June evenings to minimise attracting adult beetles.
* Seek proper expert advice before introducing to your soil
May bugs are a natural part of our ecosystem, playing a role in the broader food web. However, their larvae can pose significant challenges for gardeners and farmers. By understanding their life cycle and habits, we can take steps to mitigate their impact.
If you’re dealing with a May bug infestation or simply want to ensure they don’t become a problem, we’re here to help. Our expert team can provide tailored solutions to keep your garden and crops healthy and thriving.
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