A Little About Wasp

Many people become panicked and reach for insecticidal sprays at the mere glimpse of a black and yellow striped insect without realizing that it may in fact not be a stinging wasp, but rather a harmless syrphid fly, a native bee, some other beneficial insect, or even a harmless wasp mimic. There are over 18,000 wasp species in North America, and only a few of these cause problems to humans.

This your my backyard and garden could be described as “The Year of the Wasp” with sightings of many different species, i.e. Paper wasp, Mud Daubers, Yellow Jackets, Cicada Killers and the always helpful Bee; some in huge numbers, yes even a bug man can have the occasional invader and this particularly true of flying insects . Most wasps are beneficial since they live on a range of other insects, many of which we don't want in our gardens; aphids, caterpillars, grasshoppers and crickets, and spiders and even young cockroaches.

The downside is that they are capable of stinging to various degrees, and the worst species have extremely painful stings. However, there are many which are reluctant to sting, or whose sting is not particularly painful.

Vespid Wasps are social wasps sometimes known as paper wasps since they make nests of a papery material and the two species which occur most frequently in our area are yellow jackets and paper wasps.

Yellowjackets (Vespula ssp.) are social wasps, but queens overwinter alone, and then find a suitable sheltered nesting site in the spring. The nest begins as a ball-shaped cluster of cells covered in a smooth papery cover. As further generations develop they add to the nest, layer upon layer until it may reach 1 foot across. We are familiar with these black and yellow striped wasps ruining our picnics as they try to carry off scraps of food from our plates, or fall into a glass of beer or a can of soda (where they might not be noticed). They have a painful sting which for some people can be life-threatening, are intimidating at best, and can become quite aggressive. Last autumn there was a huge influx of yellow jackets in the Lake Tahoe region to the point where the coniferous forests were humming with them, and sitting or eating outside became impossible. So, beneficial as these are for their insect eating abilities their nuisance factor outweighs the good that they do, and if they decide to nest around your home or in high traffic areas it is wise to have them professionally exterminated.

Paper wasps (Poistes ssp.) have similar coloring and markings to yellowjackets but are slightly longer in the abdomen and have thinner waists and have orange antennae. (Yellow jacket have black antennae). These are the ones that construct nests of hexagonal cells; most often under the eaves of a roof or in a porch and these nests are used for one season and rarely get larger than a man's hand. When these wasps fly they tend to leave their legs dangling as they patrol various plants in search of insects. They can and do sting, but in general they go about their business quietly, catching aphids and tending their young. In my experience if left well alone they are not aggressive, and I have never been stung by one. Naturally if they have chosen to make a nest in a high traffic area or just outside the front door, or if you are planning to paint your house, these nests should be removed by a professional. We have always left the ones that have nested around our house until this summer when we discovered that they were eating our precious praying mantis babies as those were emerging. We knocked that wasp nest down after dark when they were not flying, but for days afterwards the wasps were flying around that area so we felt it best to avoid that spot until things had settled down.

Contact First Response Pest Control if you have any questions with regards to this post, 214-864-0669. Proudly providing pest control services to our neighbors in Highland Village, Lewisville, Flower Mound, Coppell, Corinth, Lake Dallas, Argyle, Denton and Plano Texas.

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