The documented third-instar larva is about 19.75 mm long.
Fine-art photographic collection
Empecta scutata
A Madagascan scarab whose hidden grub can be identified from the architecture of its jaws.
About this species
Empecta scutata(Fairmaire, 1901)
Information reviewed15 July 2026
Empecta scutata is a Madagascan scarab known unusually well from its underground third-instar larva, documented in rain-fed rice systems of the island’s central highlands.
Taxonomy
Animalia · Arthropoda · Insecta · Coleoptera · Scarabaeidae · Empecta
Accepted taxon. · checked 2026-07-15
Central MadagascarBroad range and selected reference localities — not a complete occurrence map.
Central Madagascar
Soils of medium- and high-altitude rain-fed rice fields and surrounding upland habitats.
Adults are seasonal; larvae remain below ground.
Larvae feed below ground on organic matter and roots; adult diet is poorly documented.
Solitary.
What makes this species remarkable?
The final-instar grub was found living beneath rain-fed rice at medium and high altitude, linking a museum beetle name to a real agricultural ecosystem where most of its life is spent unseen.
The larva is milky white with a yellowish head and progressively longer pairs of legs from front to rear — a body plan measured in detail down to a length of 19.75 millimetres.
Its mandibles, epipharynx and raster carry a combination of microscopic characters distinctive enough for researchers to identify the species while it is still an anonymous-looking white grub underground.
Sources and scientific references
- GBIF — taxon record/search for Empecta scutata
- Catalogue of Life — taxon search for Empecta scutata
- Randriamanantsoa et al. — Scarabaeoidea larvae in Madagascar rain-fed rice fields
- Madagascar white-grub thesis — detailed Empecta scutata larval description
- Research figure comparing the mandibles of Empecta scutata and other scarab larvae
More photographs
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