Flattened Giant Millipede Beetle vs Queenless Ponerine Ant
Side-by-side species comparison
| Attribute | Flattened Giant Millipede Beetle | Queenless Ponerine Ant |
|---|---|---|
| Scientific Name | Passalus unicornis | Diacamma rugosum |
| Order | Coleoptera | Hymenoptera |
| Family | Passalidae | Formicidae |
| Size | 30-45 mm | 8-12 mm |
| Habitat | Woodlands | Woodlands |
| Diet | Wood Feeders | Omnivores |
| Regions | Central Africa (Cameroon, Gabon, DRC, Congo) | South Asia, Southeast Asia |
| Conservation | Least Concern | Least Concern |
Flattened Giant Millipede Beetle
A large, flattened bess beetle with a shiny black body and a small horn on the head. Adults and larvae live together in rotting logs in a subsocial arrangement. Adults produce sounds by rubbing their hindwings against the abdomen.
Did You Know?
Parents feed their larvae pre-chewed wood and communicate with them using stridulatory sounds, one of the few examples of parental care in beetles.
Queenless Ponerine Ant
A large black ponerine ant found across South and Southeast Asia that lacks a morphological queen caste. Instead, a single mated worker called a gamergate monopolizes reproduction.
Did You Know?
The gamergate maintains her dominance by mutilating the gemmae of newly emerged workers, preventing them from mating.