Common Spiny Digger Wasp vs Square-headed wasp

Oxybelus uniglumis compared with Oxybelus bipunctatus

Key Differences

• Common Spiny Digger Wasp is Least Concern while Square-headed wasp is Not Evaluated.

Taxonomic Classification

Rank	Common Spiny Digger Wasp	Square-headed wasp
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Arthropoda (Gliederfüßer)	Arthropoda (Gliederfüßer)
Class same	Insecta (Insekten)	Insecta (Insekten)
Order same	Hymenoptera (Hautflügler)	Hymenoptera (Hautflügler)
Family same	Crabronidae	Crabronidae
Genus same	Oxybelus	Oxybelus
Species	Oxybelus uniglumis	Oxybelus bipunctatus

Evolutionary Relationship

Common Spiny Digger Wasp and Square-headed wasp share a common ancestor at the Genus level: Oxybelus.

Conservation Status

Common Spiny Digger Wasp

LC — Least Concern

Square-headed wasp

NE — Not Evaluated

Physical Characteristics

Attribute	Common Spiny Digger Wasp	Square-headed wasp
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Spiny Digger Wasp

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

Square-headed wasp

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Common Spiny Digger Wasp

<em>Oxybelus uniglumis</em>, commonly known as the common spiny digger wasp, is a small solitary wasp in the family Crabronidae, widespread across Europe, North Africa, and parts of western Asia. This species typically inhabits sunny, open areas with sandy or loose soil, including sand dunes, sandy heathlands, path edges, and sparsely vegetated ground where females excavate burrows for nesting. Its geographic range extends from the British Isles and Scandinavia across continental Europe to the Mediterranean, with additional populations recorded across North Africa and into central Asia. Classified as Least Concern on the IUCN Red List, <em>Oxybelus uniglumis</em> is among the more commonly encountered digger wasps in European sandy habitats. The species is a specialised predator of flies, particularly small dipterans from families such as Muscidae and Calliphoridae, which are paralysed and carried back to the burrow impaled on the female's sting to provision larval cells. This behaviour of impaling prey on the sting for transport is a distinctive characteristic of the genus Oxybelus. Biological traits such as average lifespan in years, precise body length measurements, and body weight remain poorly documented for this species. Adults are typically active from late spring through late summer.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden