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Stag Beetle


Summary: Stag beetles are relatively harmless and are easy to handle. The stag beetle's gigantic jaws are their most distinguishing characteristic.

No, it is not called the Stag beetle because it spends its Saturday nights alone, but rather because of the antlers found on their heads. Male Stag beetles use these antlers to fight other males when attractive female stag beetles are nearby. Their antlers are relatively harmless. However, the female stag beetles' antlers are considerably smaller, but sharper and therefore can make predators feel a sharp prick. You should be grateful that your mother-in-law does not have this capability.

Two types of stag beetles are the common stag beetle, also known as the pinching bug, and the elephant beetle, which is also known as the giant stag beetle. The male beetles have an enormous jaw that can be half as long as

Staghand.jpg

the stag beetle itself. It's that jaw that makes us jump back when we come upon one of these babies. The jaws of the stag beetle are large and branching. When it feels that its environment is threatening, the stag beetle leans back on its hind legs and opens its jaws very wide. This move helps protect the stag beetle from lizards, birds, toads, snakes, centipedes, raccoons, skunks, and weasels. However, humans should not be afraid of handling a stag beetle because they will only feel a slight pinch if bitten by one.

Like the scarab beetle, the stag beetle has wings that have a covering. When a beetle is preparing to fly, it must remove its wings from the cover, delaying its takeoff and giving it less time to fly away from predators. Hence, the big, bad jaws.

The adult stag beetle builds its habitat in decaying wood, logs, or stumps. It enjoys eating leaves and honeydew. The female stag beetle lays its larvae in rotting wood, especially if the wood is moist. The larvae continue to grow there. After the larvae hatch, they burrow their way into the wood for food. Because they help decompose rotting wood and trees, stag beetle larvae are helpful to the environment and are typically not considered pests. However, the larvae also eat roots, so they could cause damage to any plants you have growing in your yard.

If you see stag beetles in your yard, look around for their larvae. If you must, you can treat their habitats with any number of pesticides that can be purchased at any home and garden center. Keep in mind that male and female adult stag beetles do not live very long after the females have laid eggs, so it

stagfemale.jpg
Female stag beetle

is more important to deal with eliminating the larvae instead of the adults. Also, larvae usually live between three to five years before becoming adult stag beetles. This is good news if they are feeding on and decomposing dead wood, but bad news if they are feasting on the roots of plants in your garden.

Stag beetles are attracted to light, so be prepared to see them near your porch or patio light at night. Check for stag beetles living in or near tree sap in the daytime. They are likely to be found there because tree sap is one of their favorite foods. These beetles are also attracted to rotting, sweet-smelling fruit. Be sure to throw away those empty juice boxes or discarded pieces of fruit your kids leave laying around outside. Otherwise, you may be paid a visit by a family of stag beetles.

The best way to avoid stag beetles posing a threat to your backyard is to keep firewood or decaying wood far away from plants or gardens. This way, stag beetles will decompose the wood, but are unlikely to go near your award-winning sunflowers.





Comments

David Lee
24 May 2009, 01:48
how do you find stag beetle or larvae?
in my garden there is no stag beetle larvae, if you can tell me Mr. please
tell me i need your help and tell me what do the stag beetle's larvae eats.
Thank you
Ask the Exterminator
24 May 2009, 09:02
The larvae feed on the juices of decaying wood. The larvae will be in fallen trees or dead trees.
Alisa Howard
24 May 2009, 15:48
I have found holes all over my yard. I just found a male stag beetle dying just outside one of these holes. Do they did holes and live in the ground? There are literally thousands of these holes in my yard. How do I get rid of them?
Ask the Exterminator
26 May 2009, 10:52
Stag beetles burrow, but the burrows are in dead wood of fallen or dying trees.
Dana
26 May 2009, 19:37
One day last week i was messing around in the front yard around my flower beds and i have moved the water spot from the house,found a female stag beetle wasn't sure of what it was then and wasn't to fond of it neither. Then the following Saturday walking out to my flower beds to water them , (with Flip Flops on mind you) my dog behind me i turned around for something and seen my dog lift up his front paw and run back the other way as i looked on the ground i see 15 to 20 female stag beetles. I was just informed that we do have an old dead tree stump under ground in that area. I'm really not to fond of the stag beetles pinching my dog neither and was to get rid of them??

Thanks
Dana
Ask the Exterminator
26 May 2009, 21:36
Dig out the stump.
Jill
27 May 2009, 12:03
After only 16 months in this house, we walked out to the patio before nightfall last week to find 3 stag beetles. Now we are seeing 10-20 each evening and many holes in the gradd and landscaping beds. Is there a way to get them to move on without using a pesticide? My dogs are chasing them and trying to eat them.
Ask the Exterminator
27 May 2009, 12:17
Under those landscaping beds most likely are tree stumps and decaying roots from removed trees. It's not likely that you are willing to spend the money to get all that matter out of the ground. Try flooding the area with a garden hose. It might dilute the decay and chase the beetles. Then again, it might not. Sometimes this practice works to eliminate mushrooms that sprout in lawns.
Marina
03 Jun 2009, 04:13
We have recently had a lot of stag beetles flying around our garden, I recognise they are endangered here in England but they are ruining my summer. There are so many that I cannot go out in the garden. Even sitting in my living room they drive me mad constantly crashing into my window and they don't do it gently! I haven't got a tree stump but do have a small tree with some rot, however they seem to be crawling up ivy on one of our fences is it possible they could be living in there? How do I know I've found their home and how can I make them "move on"?
taylor
17 Jun 2009, 16:46
Hello, i've found about 20-20 of these in my basement, i'm not exactly sure if it's a stag beetle but it looks identical. my basement however is all cement..help?
Ask the Exterminator
17 Jun 2009, 22:43
Help how? If you want to keep them out you need to find out how they are getting in. If you want to get rid of them on the outside you need to find the decomposing wood and saturate it with water to discourage the beetles.
amber
09 Jul 2009, 00:13
HOLY CRAP!!!!
me and my mother found a stag beetle on my decks screen door. i was shocked to see how big it was. my mother and i were shocked to see the size of this bug. we didnt even know what kind of bug it was.we thought it must have been attracted to light sense it was flying aroud the light. my mother and i ran into the kitchen and grabbed bolth of our cameras and a glass cup. we trapped the but in a cup and we bolth started taking pictures. when we started taking pictures, the beetle stood on its back legs and opend his mouth wide. my mother dared me to pick it up, so the next moment, i was holding a stag beetle. at first i thought the bug was going to bite me. i thought the bite was going to hurt judging by the size of the stag beetles mouth!
Lisa Todd
10 Jul 2009, 12:43
I work at a daycare and the children here visit the area park daily. Several of our students have been pinched by what I am pretty sure is the common stag beetle or pinching bug. As facinating as I find these beetles the childen are not so enthused. We are located in eastern Pa and have never had this issue at the park before. Am I correct in guessing that we will see them dissapear by the end of July? From what I have read I think that is their mating season.
Ask the Exterminator
10 Jul 2009, 14:21
You are correct. I am a bit surprised that your daycare children are having these encounters. Stag beetles are not aggressive.
Toni
13 Jul 2009, 23:44
We have an old deck on the back of our house with warped boards and wooden railroad ties underneath deck. Can stag beetles live off of rotting wood from our deck or the railroad ties....or does it have to be from dead or dying trees? What does the larvae look like? Thank you.
Ask the Exterminator
14 Jul 2009, 09:28
The rotting wood of the railroad ties would have to be in seriously bad shape for the larvae to be inhabiting them. I suppose they could be found under the ties that are in direct contact with the soil.

For a picture of the larvae go to: http://maria.fremlin.de/stagbeetles/veluwe_larvae.jpg
JennyC
21 Jul 2009, 08:41
what help! This has been driving me nuts, having skunks invading our yard every night, i thought it was them making the holes,after about a week of filling the holes back up, going out with a flashlight and spying to see whats making the holes, i now see that its the stag beetle, thus attracting the skunks... I have sprayed around the yard with "critter ridder" to keep away the skunks, now to get rid of the beetle, i have an herb garden, with 2 tree stumps they have been feasting on, we also have pulled out 2 other tree stumps, filled in and grew new grass, which they have been burrowing MANY holes on those as well. Good luck a,d thanks for helpful info!!
Brian
14 Nov 2009, 22:37
I live in a ground-floor apartment in Indianapolis, IN. I keep finding stag beetles IN my apartment!

I've seen a few each year I've lived here, but this year more than usual.

I'm in a corner unit surrounded by grass (no trees close by) and no ground cover or mulch (no rotting wood so far as I can tell!)

They always seem to be heading in the direction of the center of the building.

So far, in the last two months I've found 20 - sometimes dead, but more often just marching along across the carpet.

I have no outdoor lights on which might attract them, though I do leave a single 7watt CFL on 24/7 in the kitchen (farthest away from windows/doors)

Anyone have an idea what they're after?

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