Pacific Seashore Rove Beetle vs Horned Clubtail

Side-by-side species comparison

Attribute Pacific Seashore Rove Beetle Horned Clubtail
Scientific Name Cafius canescens Arigomphus cornutus
Order Coleoptera Odonata
Family Staphylinidae Gomphidae
Size 5-7 mm 45-55mm
Habitat Beaches & Coastal Ponds & Lakes
Diet Predators Predators
Regions Pacific coast of North America, Hawaii North America
Conservation Least Concern Least Concern

Pacific Seashore Rove Beetle

A small, grayish-pubescent rove beetle found along the Pacific coast of the Americas under kelp and seaweed deposits. It is an important predator of seaweed fly larvae on beaches.

💡

Did You Know?

This species has colonized the remote Hawaiian Islands, likely arriving on floating mats of kelp and seaweed across the Pacific Ocean.

Horned Clubtail

A medium-sized clubtail dragonfly with small horn-like projections on the top of the head. Its body is yellow-green with brown markings. It breeds in clear ponds and lakes.

💡

Did You Know?

The tiny horns on its head are unique among North American clubtails and are used for species identification.