Mantises
No mantis in North America can hurt you. They have no venom and no sting, and the forelegs that look like weapons are built for holding insects, not for defence against anything your size.
6 species, each checked against a reference source.
All species
Start with a photograph
Identify an insect from a photo. The result includes confidence, common lookalikes and a plain safety assessment; read its accuracy and limits before treating a low-evidence photo as definitive.
Placing a mantis
Almost nothing else looks like one, so the useful question is not whether it is a mantis but which. In most of the US that comes down to three species and one measurement.
- Over 8 cm and very long-bodied — Chinese mantis, introduced and now the commonest large one.
- Under 6 cm and stocky, often grey or mottled — Carolina mantis, the native.
- A black-ringed spot inside the base of each foreleg — European mantis, and that spot is decisive.
- Petal-shaped lobes on the legs or spirals on the wings — a kept tropical species, not a wild American one.
- A female that cannot fly is likely a Carolina mantis; her wings are too short.
The folklore is mostly wrong, including the useful-sounding parts
Mantises are not protected by law in the United States — that claim circulates constantly and has no basis. Females do not routinely decapitate males; cannibalism happens and is far more common in captivity than in the field. And the reputation as garden pest control oversells them badly: they are indiscriminate ambush predators that take bees, butterflies and other beneficial insects as readily as pests, and a large Chinese mantis at a hummingbird feeder is a documented and unwelcome outcome.
Common questions
Do praying mantises bite or sting?
Neither. There is no venom and no sting. A large female can grip a finger with her spined forelegs, which is startling and does no damage.
Is it illegal to kill a praying mantis?
No. There is no US law protecting them, despite how often that is repeated. There is also rarely a reason to.
Should I buy egg cases for my garden?
It is worth thinking twice. The cases sold are usually the introduced Chinese mantis, and it eats pollinators alongside pests. Encouraging native species does more good.
How long do they live?
Under a year for the species you will meet. Adults appear in late summer, mate, lay an egg case and die with the first hard frosts; the egg case overwinters and hatches in spring.