Where do dobsonflies live?

Last Update: May 30, 2022

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Asked by: Mrs. Lisa Ferry V
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Dobsonflies are usually nocturnal. Hellgrammites are usually found in cool rivers and streams. They may also occur in lakes and ponds. They require good water quality with high amounts of dissolved oxygen.

Where are dobsonflies found?

The dobsonfly is found throughout most of eastern North America east of the Continental Divide from Canada to Mexico near flowing streams which provide habitat for its larvae.

Do Dobsonfly bite humans?

How Serious Are Dobsonflies? Adult male dobsonflies have long, curved mandibles, but they are harmless to humans. Females and larvae have smaller, sharper pincers that can pierce human skin. ... Dobsonflies only bite when handled roughly, and while the bite is painful, the effects of a bite do not last very long.

What is a Dobsonfly look like?

Eastern dobsonfly adults are large, soft bodied, usually a drab gray, black, or brown, with prominent pincers and long antennae. The wings have conspicuous veins and are usually folded down the length of the body when at rest.

How do you get rid of Dobsonflies?

Our top recommendation for treating Dobsonflies is Reclaim IT Insecticide. Reclaim IT a powerful insecticide that will be used to create a protective barrier around the perimeter of your structure to kill and repel more than 80+ insects, and it will have residual (or it will keep working) for up to 90 days.

Dobsonfly facts: also known as hellgrammites! | Animal Fact Files

18 related questions found

What are dobsonflies related to?

Dobsonflies are not really flies (insects in the Order Diptera). They are in the Order Megaloptera along with the Alderflies and Fishflies, all of which have aquatic larvae.

How big do Hellgrammites get?

Growing to a length of two to three inches long the hellgrammite resembles a centipede with a powerful set of pinching mouthparts, but it possesses only six legs. The remainder of its body is lined with six to eight pairs of thick filaments that act as gills for underwater breathing.

How can you tell if a Dobsonfly is male or female?

Male Dobsonflies have long, fleshy mandibles that can look like a second set of short, rubbery antennae. Females have a short jaw with large pincers. Both genders are a taupe color and have large wings that cover the body when viewed from overhead.

How big is a male Dobsonfly?

Both males and females can reach up to five inches in length, and although the rather frightening pincer-like mandibles of the male are much larger and more intimidating in appearance than are the female's, they are so large that they afford weak leverage and are thus incapable of breaking a person's skin.

Do fish eat Dobsonflies?

Dobsonflies are aquatic insects in the family Corydalidae, order Neuroptera - same order that includes Green and Brown Lacewings, Ant Lions, and Snake Flies. ... The larvae are known as “hellgrammites”, and are also very impressive predators, often catching and feeding on small fish.

Are Dobsonflies good?

Hellgrammites live under rocks in streams for up to three years and grow to 3 inches in length. They are most easily recognized by pairs of leg-like gills along the abdomen and large pincer-like mandibles, which can inflict a nasty bite. But fish love them, so using them as bait is worth an occasional pinch.

What Does a Female Dobsonfly look like?

Description of dobsonflies

Adults measure two to four inches from the front of the head to the wing tips. They are soft-bodied and brownish-gray with the wings held rooflike over the body. The wings have a large number of veins (lines) and are often mottled. The antennae are long and threadlike.

What is the largest flying insect?

One species of mydas fly, Gauromydas heros, is the largest species of fly on Earth, reaching a length of 2.8 inches with a wingspan of 3.9 inches.

Are Hellgrammites rare?

I also remember catching a large flying insect with enormous pincers on its head. ... (These pincers are technically called mandibles.) I learned that this critter was known as the dobsonfly.

How do you keep Hellgrammites alive?

To keep hellgrammites alive, store the bait in the same conditions as crayfish (in a container with sphagnum moss, green leafed branches or grass), except for adding a few inches of water at the bottom, but not so much as to submerge the moss and branches.

How do you bait Hellgrammites?

Pick them up by grasping around the hard collar, and hook from the bottom up through the collar or head. Hellgrammites need to be drifted with current, so use a tiny bit of split shot and cast into a fish's feeding lane. Watch the line, and don't let your bait do what it does naturally–which is grab a rock and hang on.

Is a Dobsonfly the same as a dragonfly?

Adult dobsonflies and fishflies are large and have 2 pairs of wings and chewing mouthparts. They resemble dragonflies, but dobsonflies and fishflies cannot fly as well as dragonflies. ... Otherwise, dobsonflies and fishflies are very similar in appearance, with dobsonflies generally being larger.

What bug has big wings?

These interesting creatures belong to an order of insects known as the Megaloptera – huge winged insects. Dobsonflies are among the largest of winged insects, found hereabouts ranking in size with large moths and butterflies.

What is a Grampus bug?

A dobsonfly larva is also known as a hellgramite, grampus or go devil. The presence of dobsonfly larvae in Black Pond indicates that this body of water is chemically clean, since dobsonfly larvae are somewhat intolerant to pollution. But they do best in well-oxygenated water.

Do male Dobsonflies eat?

Larvae grow up to three inches in length are dull colored and have gill filaments and feathery gill clusters along the sides of the abdomen. Dobsonflies are harmless to property and crops. ... Though they don't feed on people, both adults and larvae will bite if handled carelessly. Dobsonfly female (left) and male (right).

Can you pick up a Dobsonfly?

Answer: This is a Dobsonfly. It is male, and his large pinchers will not harm you. If a female is picked up, they will bite you, and their bites can be quite painful. Dobsonflies are only around for a week or so to mate.

Do pincher bugs bite humans?

Earwigs are small insects. ... An important thing to note about earwigs is that while they technically can bite, they rarely do. Instead, an earwig is more likely to pinch your skin and hold on tight. In some cases, the pinch might even be hard enough to break your skin or draw blood.