No, you didn’t just find a murder hornet

TPI has received several inquiries about murder hornets appearing in Massachusetts. Rest assured, you did not find a murder hornet in New England.

Invariably, the giant wasps being reported are *eastern cicada killer wasps* (Sphecius speciosus). Though their name may be menacing, these native wasps are not out to get you, your pets, or honey bees.

Rather, they’re after cicadas. In late-summer, when the deafening choir of cicadas reaches its peak, cicada killers emerge. Males emerge first and are most interested in mating. In an effort to win the top female, males guard territories all day long and duel readily with similar-sized intruders.

Females, on the other hand, hunt. They track down and find adult cicadas (specifically, dog day cicadas that have short life cycles, not the periodical ones that remain underground for nearly two decades). Upon finding one, she paralyzes it with her stinger, hauls it back to the nest, and buries it in the long underground burrow she has prepared for her offspring. During her 3-4 week life, she is industrious: she will lay 10-15 eggs in all and provision each egg with 2-3 cicadas.

eastern cicada killer wasp carrying a cicada
Eastern cicada killer wasps hunt cicadas, not honey bees. PC: Judy Gallagher, Flickr

You can identify cicada killers by the combination of orange-black head and thorax and a black abdomen with broken yellow bands. They are 1.5–2 inches long, about the length of a piece of rigatoni. Females do have a stinger for paralyzing cicadas, but they’re docile and will not sting unless provoked. Adults are common in the US east of the Rocky Mountains and are around for only a few weeks each year to coincide with cicada activity.

Occasionally, you might find an entire nesting population of cicada killers. Typically, they nest near each other in sandy, well-draining soil found in disturbed lawns or golf course bunkers. Nests can be identified by the combination of a hole about the width of a nickel that’s preceded by a wide fan of soil.

cicada killer nest
Cicada killer nests are conspicuous. Look for a nickel-sized hole preceded by a wide fan of soil. PC: Sarah Zukoff, Flickr

If you want to discourage cicada killers from nesting in your yard, you can disturb the nest entrance or keep it wet since they prefer dry soils for nesting. Definitely don’t use insecticides. Chemical pesticides can persist for many years in soils harming other beneficial organisms in the process. Remember, these wasps play an important role in the checks and balances of our native ecosystems and help cut down on the incessant din of cicadas, so it’s in your favor to just let them be.

cicada killer wasp aggregation
Typically, cicada killers nests in dense aggregations. Each brown patch in the lawn is a cicada killer nest. PC: Chick Holliday, Wikimedia

If you spot a cicada killer, take the opportunity to watch it work. You might see a male guarding its territory or a female on the hunt. If you’re still enough (and resemble a tree), one might even land on you! Stay calm, and remember, they’re not out to murder you.

cicada killer on human hand
It’s hard work flying with a cicada! A female cicada killer wasp is taking a rest on the hand of former TPI member Max McCarthy.

Pollinator Week BINGO!

Every year, a week in June is dedicated to celebrating pollinators. All week long TPI will be posting pollinator-related videos, blog posts, etc. PLUS, you can play BINGO for a chance to win a prize!

To play Pollinator Week BINGO, which features flower-visiting insects you can find in the Northeastern USA this time of year, download and print the Bingo card (below) or screen shot the image on your phone. Take your card/phone outside and if you find the correct insect, mark it off on your printed card with a pen/pencil or with your phone’s photo annotation option.

If you get BINGO! (five in a row, vertical, horizontal, or diagonal, TPI logo is a free space), send a photo of your annotated card to tuftspollinators@gmail.com or tweet a photo and tag @PollinateTufts by 11:59 pm on Friday, June 26. Each completed BINGO! card will be entered in a drawing to win TPI swag and a voucher for a free pollinator-friendly plant at next spring’s TPI plant sale! Limit one entry per person.

For help identifying the insects you observe, download our identification guides or reach out to us with photos via email or Twitter!


Stay tuned for more #PollinatorWeek fun!