Stridulating Passalid vs Ensign Wasp
Side-by-side species comparison
| Attribute | Stridulating Passalid | Ensign Wasp |
|---|---|---|
| Scientific Name | Passalus punctatostriatus | Evania appendigaster |
| Order | Coleoptera | Hymenoptera |
| Family | Passalidae | Evaniidae |
| Size | 30-42 mm | 5-7 mm |
| Habitat | Woodlands | Woodlands |
| Diet | Wood Feeders | Parasitoids |
| Regions | Central America, South America | Africa, Asia, North America, South America |
| Conservation | Least Concern | Least Concern |
Stridulating Passalid
A large, shiny black bess beetle with prominently punctate-striate elytra and strong mandibles. It lives in family groups within decaying logs. Known for producing a wide repertoire of stridulatory sounds for communication.
Did You Know?
Adults produce sounds by rubbing specialized ridges on the abdomen against the underside of the wings, creating at least 14 distinct calls.
Ensign Wasp
A parasitoid wasp that targets cockroach egg cases and helps control pest populations.
Did You Know?
It bobs its flag-like abdomen up and down as it walks, resembling a tiny flag bearer.