Size reference
Source supported14.5 mm body length
Adult male type measurement; the amber block dimensions and mass describe its container, not the insect. [D1]
EXHIBIT 244
Alienopterus
Alienopterus
Prehistoric insect
Alienopterus combined short forewings, long hindwings and walking legs in a Cretaceous insect related to the roach–mantis lineage. [2]
TWO WAYS TO PICTURE THE PAST
Science & the silver screen
Compare the evidence with the familiar movie image. The illustrations are not to a shared scale.
01 / SOURCE-INFORMED RECONSTRUCTION
A life reconstruction from the evidence
Image unavailableIllustrative life reconstruction of Alienopterus in a period-appropriate environment; coloration and missing anatomy are interpretations.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. [2]
Source-informed reconstruction. Appearance evidence [2]. Original illustration; missing anatomy, coloration and scenery include interpretation.
Fossils constrain this life reconstruction. Missing anatomy, coloration and the environmental scene include interpretation; the dossier explains the evidence limits.
02 / MOVIE-STYLE INTERPRETATION
A cinematic imagination
Image unavailableIllustrative living reconstruction of Alienopterus; missing anatomy and exact colors remain uncertain.The exhibit and its credited image source remain available.
An illustrative reconstruction. Compare its anatomy with the evidence and limitations in the dossier. Lighting, coloration and scenery are artistic choices. This image does not document a fossil locality or behavior.
Original artwork · artistic interpretation.
Scientific view: source-informed reconstruction, credited paleoart or specimen-based imagery. Movie-style view: Original artistic interpretation. Reconstructions involve uncertainty.
PERIODCretaceous[4]
DIETAnimal feeding inferredEvidence and uncertainty in the dossier
TOTAL LENGTHSee the dossierEstimate scope matters
FOSSILS FOUNDMyanmar, South Korea[4]
MEET THE ANIMAL
Meet Alienopterus
Alienopterus was an insect from the Cretaceous, with a combination of features that interested scientists studying the relatives of cockroaches and mantises. A preserved adult male from Myanmar, A. brachyelytrus, had a 14.5-millimeter body. Its short forewings lay above longer hindwings. Six legs supported walking, and pads on its feet suggested climbing on vegetation. A predatory diet is inferred from its anatomy, rather than proved by a recognizable meal. [D1]
Its front legs were not simply miniature versions of a modern mantis’s prey traps. A later comparative study emphasized that they lacked the specialized shape and spines of those traps. The same study raised a taxonomic question: another named fossil, Aethiocarenus, might be an immature Alienopterus. It requested further investigation. That suggestion is a reason to avoid counting a possible overlap twice, rather than proof that the two names are settled synonyms. [D2]
Alienopterus is also known beyond the original amber discovery. A 2025 monograph describes A. imposter from a rock fossil in South Korea. Such additions broaden the genus’s geographical scope. They also show why a genus exhibit must distinguish its chosen reconstruction from all other species: the Myanmar adult supplies this gallery’s reference anatomy, while the Korean material contributes separate evidence about where the genus occurred. [D4]
PREHISTORIC ANIMAL DOSSIER
A life in profile.
The animal, the evidence, and the questions still open.
Its front legs differ from the enlarged, spiny prey traps of modern mantises; relationship and rank have been debated. [D2]
Profile scope: Genus — Alienopterus; galleries use A. brachyelytrus, adult male holotype BU-001057 from Myanmar amber. Korean material extends the genus scope. [D1] [D4]
- Time
- Cretaceous
- Fossil locations in this exhibit
- Myanmar, South Korea
How to read the evidence
Source supported identifies a description documented by the cited source. Inferred marks a reconstruction or functional estimate. Debated marks competing interpretations. Not established means the sources reviewed for this dossier do not support a firm conclusion; it does not mean a behavior never occurred.
A size reference is an estimate, not a population range. Nesting evidence does not by itself establish courtship, mate choice, or lifelong pairing.
Body mass
Not establishedNot established here
No insect body-mass estimate is reported. [D1]
Diet
InferredSmall-animal feeding inferred
Leg brushes, mouthparts and vision motivated a predatory interpretation; no specific meal is identified. [D6]
Habitat
InferredTree or shrub foliage inferred
Attachment pads support climbing; resin burial does not identify its exact host plant. [D6]
Movement
InferredWalking and flight inferred
Similar walking legs and developed hindwings support these capabilities. [D1]
Distinctive anatomy
Source supportedWalking forelegs, rather than mantis traps
The front femora lack the specialized shape and spination of mantis raptorial legs. [D2]
Reproduction & life together
Reproduction
Not establishedNot established here
The male type does not identify eggs or egg cases. [D1]
Courtship
Not establishedNot established here
Male genital structures do not establish a courtship sequence or mate choice. [D1]
Social behavior
Not establishedNot established here
The reviewed description does not establish colonies, packs or cooperative hunting. [D1]
Dossier research & sources
Sources and inspection notes for the claims in this profile.
- Alienoptera — A new insect order in the roach–mantodean twilight zoneGondwana Research; Bai et al., 2016 · Accessed 2026-10-08Original full author-hosted article inspected: adult male, body versus amber-block measurements, three similar leg pairs, forefemoral brushes, short forewings, folded hindwings, attachment pads, inferred arboreal predation and male terminalia. · Inspected: page
- An exceptionally preserved 110 million years old praying mantis provides new insights into the predatory behaviour of early mantodeansPeerJ; Hörnig, Haug & Haug, 2017 · Accessed 2026-10-08Original full XML/body retained and inspected, especially comparative Alienopterus leg morphology and the expressly unresolved suggestion that Aethiocarenus material may represent immature Alienopterus. · Inspected: page
- An exotic insect Aethiocarenus burmanicus gen. et sp. nov. from mid-Cretaceous Myanmar amberCretaceous Research; Poinar & Brown, 2017 · Accessed 2026-10-08Original publisher abstract/preview inspected; Aethiocarenus was described separately as a wingless female. Full article not accessed. · Inspected: abstract
- Jinju cockroachesVršanský et al.; Amba projekty, 2025 · Accessed 2026-10-08Original monograph retained; relevant Alienopteridae and Alienopterus/Caputoraptor sections, printed pages68–71 inspected. Actual A. imposter compression photograph on printed page69 viewed; not a photograph of the Myanmar type. · Inspected: page
- Alienopterus genus recordIntegrated Taxonomic Information System, 2025 · Accessed 2026-10-08Institutional valid-genus record and type-name information inspected; not a source of life-history observations. · Inspected: page
- Chinese–German team discovers the extinct insect order AlienopteraInstitute of Zoology, Chinese Academy of Sciences, 2016 · Accessed 2026-10-08Full original institutional Chinese research-team article and actual type/micro-CT panel inspected. Inferred arboreal predation and flight are separated from direct preserved anatomy; extinction speculation is not adopted. · Inspected: page
THE STORY IN THE FOSSILS
Beyond one amber specimen
The Jinju monograph describes A. imposter from Korean compression fossils. Genus-wide geography therefore extends beyond the Myanmar adult used in this reconstruction. [4]
A note on scale and time
The dossier identifies the scope of each reference estimate. A mount, an individual fossil and a species-wide adult range are different measurements. Comparison metrics remain unavailable where adult scope has not been established. Unknown does not mean zero.
Sources & editorial notes
Sources support the stated claims and scopes. Refer to the evidence notes for uncertainty.
- Alienoptera — A new insect order in the roach–mantodean twilight zoneGondwana Research; Bai et al., 2016 · Accessed 2026-10-08Original full author-hosted article inspected: adult male, body versus amber-block measurements, three similar leg pairs, forefemoral brushes, short forewings, folded hindwings, attachment pads, inferred arboreal predation and male terminalia. · Inspected: page
- An exceptionally preserved 110 million years old praying mantis provides new insights into the predatory behaviour of early mantodeansPeerJ; Hörnig, Haug & Haug, 2017 · Accessed 2026-10-08Original full XML/body retained and inspected, especially comparative Alienopterus leg morphology and the expressly unresolved suggestion that Aethiocarenus material may represent immature Alienopterus. · Inspected: page
- An exotic insect Aethiocarenus burmanicus gen. et sp. nov. from mid-Cretaceous Myanmar amberCretaceous Research; Poinar & Brown, 2017 · Accessed 2026-10-08Original publisher abstract/preview inspected; Aethiocarenus was described separately as a wingless female. Full article not accessed. · Inspected: abstract
- Jinju cockroachesVršanský et al.; Amba projekty, 2025 · Accessed 2026-10-08Original monograph retained; relevant Alienopteridae and Alienopterus/Caputoraptor sections, printed pages68–71 inspected. Actual A. imposter compression photograph on printed page69 viewed; not a photograph of the Myanmar type. · Inspected: page
- Alienopterus genus recordIntegrated Taxonomic Information System, 2025 · Accessed 2026-10-08Institutional valid-genus record and type-name information inspected; not a source of life-history observations. · Inspected: page
- Chinese–German team discovers the extinct insect order AlienopteraInstitute of Zoology, Chinese Academy of Sciences, 2016 · Accessed 2026-10-08Full original institutional Chinese research-team article and actual type/micro-CT panel inspected. Inferred arboreal predation and flight are separated from direct preserved anatomy; extinction speculation is not adopted. · Inspected: page
KEEP EXPLORING
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