Approximately 8–14 mm long.
Fine-art photographic collection
Homalopilo tristis
A Madagascan checkered beetle whose antennae became a decisive clue in untangling an entire group.
About this species
Homalopilo tristis(Klug, 1842)
Information reviewed15 July 2026
Homalopilo tristis is a Madagascan clerid beetle known through detailed comparison with related species. Its compact predatory build, dense surface sculpture and distinctive antennae are central to recognising it.
Taxonomy
Animalia · Arthropoda · Insecta · Coleoptera · Cleridae · Homalopilo
Accepted taxon. · checked 2026-07-15
MadagascarBroad range and selected reference localities — not a complete occurrence map.
Madagascar
Woodland and forest habitats, especially on bark and dead wood where other insects develop.
Adults run over trunks and branches.
Predatory on other insects and their larvae.
Solitary.
What makes this species remarkable?
In a 1948 revision, the antennae of a newly studied relative were said to differ hardly at all from those of H. tristis, making this species the anatomical reference point for diagnosing a cluster of Madagascan clerids.
Its clubbed antenna is not a simple string of segments: the proportions and expansion of the final articles form a species-level signature that taxonomists compare under magnification.
The adult’s flattened, fast-running body and forward-pointing jaws turn tree bark into a hunting surface, allowing it to pursue concealed insect prey through cracks that larger predators cannot enter.