Several common insects and one well-known spider match the description of a black body with white spots. The most likely candidates depend on the size of the creature, the time of year, and where you found it. Here are the species you’re most likely looking at, how to tell them apart, and which ones matter for your home or yard.
Spotted Lanternfly Nymphs
If the bug is small, wingless, and a strong jumper, you’re probably looking at a young spotted lanternfly. During their first three life stages, these nymphs are black with white spots and measure roughly a quarter inch long. They’re active from May through July and are occasionally mistaken for ticks because of their small size and dark coloring.
Spotted lanternflies are invasive pests that feed on the sap of more than 70 plant species, with a strong preference for grapevines and tree of heaven. They don’t bite or sting, but they cause serious agricultural damage. If you live in the northeastern or mid-Atlantic United States and see clusters of these tiny black-and-white hoppers on a tree trunk or vine, it’s worth reporting the sighting to your state’s department of agriculture. Later in the season, the nymphs develop red markings before becoming the gray, spotted-wing adults most people recognize.
Asian Longhorned Beetle
A larger insect, about an inch to an inch and a half long, with a shiny black body and distinct white spots on its wing covers is likely an Asian longhorned beetle. This species also has striking black-and-white banded antennae that can be as long as or longer than its body. It has a thick, robust build with a smooth, glossy appearance.
This is one of the most destructive invasive insects in North America. The larvae tunnel deep into hardwood trees, especially maples, and can kill healthy trees within a few years. Signs of an infestation include perfectly round exit holes in branches and trunks, sawdust-like material at the base of trees, and branches dying from the top down. If you suspect you’ve found one, take photos, note the location, try to capture the beetle in a jar, and report it to your state department of agriculture or use the Midwest Invasive Species Information Network (MISIN) reporting tool or smartphone app.
How to Tell It From a Native Look-Alike
The white-spotted pine sawyer is a native beetle that looks similar but is harmless to healthy trees. A few details separate them. The pine sawyer has a browner body and a slimmer build that looks pitted or dusty rather than glossy. Its antennae are uniform in color, not banded black and white. The easiest giveaway: the pine sawyer has a distinctive white dot between its “shoulders” where the wing covers meet. The Asian longhorned beetle does not have this marking.
Eyed Click Beetle
If the bug is large (one to nearly two inches), mostly black or dark gray, and has two huge oval spots that look like eyes on the plate behind its head, you’ve found an eyed click beetle. Those false eyespots are white rimmed with black and are thought to startle predators. Pick it up and it will demonstrate its signature trick: when placed on its back, it snaps its body with an audible click and launches itself into the air.
Eyed click beetles are completely harmless. The adults eat very little. Their larvae, which live inside rotting stumps of oak, cherry, and apple trees, are actually beneficial predators. A single larva can consume more than 200 wood-boring beetle grubs during its development. Finding one of these beetles in your yard is a sign of a healthy ecosystem, not a pest problem.
Bold Jumping Spider
Not technically a bug, but if the creature you spotted is compact, fuzzy, and about half an inch long with a large white or reddish spot on the top of its abdomen plus two smaller spots behind it, you’re looking at a bold jumping spider. These are among the most recognizable spiders in North America. They have large forward-facing eyes that give them an almost cartoonish face, and their mouthparts have a metallic green sheen in the right light. Juveniles often have orange spots that turn white as the spider matures.
Bold jumping spiders are active daytime hunters with excellent vision. They stalk and pounce on prey rather than building webs. They’re common on exterior walls, fences, and garden plants. Their bite is rare and comparable to a mild bee sting, so they pose no meaningful risk. Most people who learn to recognize them end up appreciating them as effective pest controllers.
Quick Identification by Size and Behavior
- Under half an inch, jumps when disturbed, found May through July: Spotted lanternfly nymph. Invasive pest worth reporting.
- One to one and a half inches, shiny black, long banded antennae: Asian longhorned beetle. Highly destructive invasive. Report immediately.
- One to two inches, two large false eyespots, clicks and flips when on its back: Eyed click beetle. Harmless and beneficial.
- About half an inch, fuzzy, large forward-facing eyes, stalks prey: Bold jumping spider. Harmless garden predator.
- One inch or so, brownish-black, slim body, white dot between shoulders: White-spotted pine sawyer. Native beetle, not a threat to healthy trees.
What to Do If It’s Invasive
The two species on this list that warrant action are the spotted lanternfly and the Asian longhorned beetle. Both are subject to active eradication and containment programs across multiple states. For the Asian longhorned beetle, look around nearby hardwood trees for round exit holes about the diameter of a pencil, sawdust accumulating at the base, and branches dying from the crown downward. For spotted lanternflies, check tree trunks and smooth surfaces for egg masses, which look like smears of dried mud and appear from fall through early spring.
Most states with known populations have dedicated reporting hotlines or online tools. You can also contact your state’s department of agriculture directly. Photos and a location pin from your phone are the two most useful things you can provide when filing a report.