
Dobsonfly
Corydalus cornutus
insectsHow to Identify
Dobsonflies are large insects, with adults reaching up to 5 inches in length. They are characterized by their long, slender bodies, smoky gray wings, and prominent mandibles, especially on the males. The larvae, known as hellgrammites, are aquatic with a segmented body and strong jaws.
Signs of Infestation
Dobsonflies are typically solitary insects, so you won't find large infestations. Seeing adult dobsonflies around outdoor lights at night is common, as they are attracted to them. Finding hellgrammites in nearby creeks or streams could indicate their presence near your Myrtle Beach property.
Health Risks
Dobsonflies are not considered a significant health risk in Myrtle Beach. Adult males have impressive mandibles but are not strong enough to break human skin. The aquatic hellgrammite larvae can deliver a painful bite if handled, so caution is advised if encountered in local waterways.
Our Treatment Method
Control efforts for dobsonflies are rarely necessary in Myrtle Beach. MBPC focuses on managing their presence by reducing outdoor lighting that attracts them. Licensed technicians can advise on strategies to minimize attraction near your Grand Strand home, adhering to SC Department of Pesticide Regulation guidelines.
Prevention Tips
Reduce outdoor lighting around your Myrtle Beach home to minimize attraction of adult dobsonflies. Keep vegetation trimmed back from your house and outdoor lights. Ensure proper drainage around your property to reduce standing water, though this primarily impacts mosquito control in our SC climate.
Habitat
Dobsonflies are found near rivers, streams, and other bodies of water in the coastal regions of South Carolina. The larvae, hellgrammites, are aquatic and require clean, flowing water to thrive. Adults are often found near lights at night, especially during their mating season in the humid subtropical climate of Myrtle Beach.
Peak activity: Spring-Summer
Identification Photos
Frequently Asked Questions About Dobsonfly
Dobsonflies are generally not dangerous to humans in Myrtle Beach. While the males have large mandibles, they are mainly used for display and cannot cause significant harm. Hellgrammites can bite, but they are usually found in water and pose little risk unless handled.
Dobsonflies are primarily attracted to lights at night in Myrtle Beach. Reducing outdoor lighting, especially bright white lights, can help minimize their presence around your home. Since they breed near water, consider the proximity of your property to local creeks and rivers.
Getting rid of dobsonflies is rarely necessary in Myrtle Beach as they don't typically infest homes. Focusing on reducing outdoor lighting is usually sufficient. Contact MBPC for advice on minimizing their attraction without harming beneficial insects.
Hellgrammites are predators and can feed on other aquatic insects and small fish in a pond. While they are a natural part of the ecosystem, their presence might affect the balance of your pond's population. If you're concerned, contact a local aquatic specialist in the Myrtle Beach area.
Don't Let Pests Win.
Take Back Your Home Today.
Every day you wait gives pests more time to multiply and cause damage. Our licensed technicians are ready to help — often the same day you call.
Free Inspection
No cost, no obligation
Same-Day Service
Fast response guaranteed
Eco-Friendly
Safe for family & pets
100% Guarantee
Pests return, so do we
Ready to get started?
Choose how you'd like to connect with us.
Available Mon-Fri 8am-6pm, Sat 9am-2pm
