Adults are approximately 15–25 mm long.
Fine-art photographic collection
Sagridola maculosa
A Madagascan longhorn with a male reproductive apparatus longer than the abdomen that contains it.
About this species
Sagridola maculosa(Guérin-Méneville, 1844)
Information reviewed15 July 2026
Sagridola maculosa is one of only four known species in an endemic Madagascan longhorn genus. Its external spotted pattern is striking, but its most extraordinary structure is hidden internally.
Taxonomy
Animalia · Arthropoda · Insecta · Coleoptera · Cerambycidae · Sagridola
Accepted taxon. · checked 2026-07-15
MadagascarBroad range and selected reference localities — not a complete occurrence map.
Madagascar
Forest and woodland containing dead wood.
Adults occur on trunks, branches and flowers.
Larvae develop in dead or dying wood.
Solitary.
What makes this species remarkable?
The male penis-and-tegmen complex is longer than the abdomen; at rest its base projects forward into the metathoracic cavity, forcing a reproductive structure to share space with the flight apparatus.
That arrangement is so unusual that Sagridola maculosa is used as the illustrated dorcasomine example in a major zoological handbook on longhorn-beetle anatomy.
Sagridola contains only four described species, all Madagascan, making maculosa part of a complete evolutionary experiment confined to one island.
Sources and scientific references
- GBIF — taxon record/search for Sagridola maculosa
- Catalogue of Life — taxon search for Sagridola maculosa
- Handbook of Zoology — genital complex longer than the abdomen in Sagridola maculosa
- Dorcasominae monograph — Sagridola taxonomy and Madagascar endemism
- Sagridola genus catalogue — four described species