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Some insects resemble other insects closely enough to invite a second look—but resemblance is not identity, and it does not by itself prove that a predator is fooled. A wasp mantidfly, Climaciella brunnea, combines a wasp-like pattern with mantis-like forelegs and lacewing-like wings. Ant mimics, meanwhile, occur across many arthropod groups and often match ants in color and behavior more strongly than in size or body shape.
What insects mimic other insects?
Insect mimicry is not one uniform look. A mimic may share selected traits with another insect—such as color, body outline, movement, or behavior—without being a close copy in every respect. The resemblance may plausibly influence how another animal responds, but that proposed effect should be distinguished from what researchers can directly observe or test.
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Two useful examples show different evidence and different kinds of resemblance: ant mimics studied across multiple traits, and the brown wasp mantidfly, whose appearance recalls paper wasps.
Ant mimics across arthropod groups
Ant mimicry is widespread among arthropods, not confined to one insect family. A 2022 comparative study assessed mimics against ants and related non-mimics using color, shape, size, and behavior. The mimics were more ant-like across the traits measured than related non-mimics, but the strength of resemblance differed: color and behavior showed the strongest similarity, while size and body shape were weaker matches. That pattern makes mimicry better understood as a bundle of signals than as a perfect copy. Read the 2022 ant-mimic study.
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The brown wasp mantidfly
Climaciella brunnea is a mantidfly in the family Mantispidae, order Neuroptera—not a wasp and not a praying mantis. It can nevertheless suggest all three: its banded body and wing pattern resemble wasps; its long prothorax, head, and grasping forelegs evoke a praying mantis; and its clear, delicately veined wings look like those of lacewings. Texas A&M AgriLife Extension notes its resemblance to Polistes paper wasps. Texas A&M AgriLife Extension’s mantidfly guide.
Why do some insects look like ants or wasps?
A possible benefit of resemblance is that an animal encountering the mimic may respond as it would to the model. Ants can sting, bite with their mandibles, and respond as a group; looking ant-like could therefore affect a predator’s decision to attack. University of Cincinnati research news discusses this possibility and quotes doctoral student Alexis Dodson explaining natural selection as favoring traits that can discourage others from eating an animal or help it find mates while limiting costs. That is an explanatory account, not a measured finding that all ant mimics deceive the same predators. University of Cincinnati research news on ant mimicry.
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The Missouri Department of Conservation says the wasp resemblance of C. brunnea likely helps protect it from predators. The agency also reports geographic variation in its appearance in relation to locally abundant wasps. This is a qualified natural-history interpretation: it does not demonstrate that every predator mistakes the mantidfly for a wasp, or that the same benefit applies in every location. The species occurs in grasslands and other open habitats, hunts insects visiting flowers, and has larvae that are parasitoids of spiders. Missouri Department of Conservation’s brown wasp mantidfly account.
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Start with the animal’s full set of features rather than a single stripe or color pattern. In the brown wasp mantidfly, the long prothorax and raptorial front legs are prominent clues to a mantidfly, while its clear, finely veined wings add a lacewing-like feature. Its resemblance to wasps is real, but resemblance does not determine its classification. C. brunnea belongs to Mantispidae within Neuroptera.
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- Look at the front end: Mantidflies have a long prothorax and grasping forelegs, features that give them a mantis-like appearance.
- Look at the wings: Their clear, delicate venation is characteristic of the lacewing-like side of the resemblance.
- Keep the pattern in perspective: Yellow, brown, rust, or black banding can make the mantidfly look wasp-like, but color alone does not identify it as a wasp.
These cues explain why a look-alike should not be named as its model species. Identification depends on the combination of traits, not on what an insect first brings to mind.
How is insect mimicry different from camouflage or flower mimicry?
Insect-to-insect mimicry concerns resemblance to another insect. Camouflage and resemblance to non-insect forms are different cases: mantis body shapes, for example, can resemble bark, leaves, sticks, grass, or flowers. Those forms relate to surroundings or other objects, not to one insect resembling another. The American Museum of Natural History’s overview of mantis forms.
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The orchid mantis is another useful contrast. Its flower-like appearance is not an example of one insect mimicking another. A 2014 study in The American Naturalist reported experimental evidence that orchid mantises deceive pollinators, while noting that further research with a wider diversity of signal receivers is needed to understand the benefits fully. The 2014 orchid-mantis study.
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| Example | Resembles | Traits described or measured | Proposed receiver or effect | Evidence stated in the sources |
|---|---|---|---|---|
| Ant-mimicking arthropods | Ants | Color, shape, size, behavior; study reports strongest resemblance in color and behavior and weaker resemblance in size and body shape | Predators may respond differently to an ant-like appearance; the study does not establish one universal receiver or benefit | Comparative trait measurements in a 2022 study; they support differences in resemblance, not a universal deception mechanism |
| Brown wasp mantidfly, Climaciella brunnea | Paper wasps, including Polistes | Banded coloring and wing pattern; also has mantis-like forelegs and lacewing-like wings | Missouri Department of Conservation describes protection from predators as likely | Natural-history description and a qualified protective interpretation; no claim that all predators are deceived |
| Orchid mantis | Flowers, not another insect | Flower-like appearance | Pollinators | A 2014 study reports experimental evidence of pollinator deception; it is a contrast, not insect-to-insect mimicry |
The comparison is not a ranking: the ant study and the mantidfly account address different questions and do not use one shared measure of mimicry. The clearest common lesson is that resemblance can be partial, while its ecological function requires evidence beyond appearance alone.
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