Bear-clawed Nomad Bee vs Common Water Rat

Nomada baccata compared with Hydromys chrysogaster

Key Differences

• Bear-clawed Nomad Bee is Critically Endangered while Common Water Rat is Least Concern.

Taxonomic Classification

Rank	Bear-clawed Nomad Bee	Common Water Rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Hymenoptera (Ants, Bees & Wasps)	Rodentia (Rodents)
Family	Apidae (Bees)	Muridae (Mice & Rats)
Genus	Nomada	Hydromys
Species	Nomada baccata	Hydromys chrysogaster

Evolutionary Relationship

Bear-clawed Nomad Bee and Common Water Rat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bear-clawed Nomad Bee

CR — Critically Endangered

Common Water Rat

LC — Least Concern

Physical Characteristics

Attribute	Bear-clawed Nomad Bee	Common Water Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bear-clawed Nomad Bee

Habitat

Inhabits temperate broadleaf and mixed forests within the Palearctic biogeographic realm.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Water Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Bear-clawed Nomad Bee

The Bear-clawed Nomad Bee (Nomada baccata) is a species in the genus Nomada. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits temperate broadleaf and mixed forests within the Palearctic biogeographic realm.

Common Water Rat

<em>Hydromys chrysogaster</em>, commonly known as the common water rat or rakali, is a semi-aquatic rodent in the family Muridae, native to Australia and New Guinea. It is classified as Least Concern by the IUCN, reflecting its relatively stable population across a broad range of freshwater and estuarine habitats on the Australian continent and associated islands. The species typically inhabits the banks of rivers, lakes, wetlands, and estuaries, where it constructs burrows in streambanks. It is highly adapted for an aquatic lifestyle, with partially webbed hind feet, a flattened head, and a dense waterproof coat. <em>Hydromys chrysogaster</em> is a carnivore, typically feeding on fish, crustaceans, mussels, frogs, and aquatic invertebrates, which it often carries to elevated feeding platforms to consume. The species is nocturnal and crepuscular, most active during early morning and evening hours near the water's edge. Biological traits including average lifespan, body length, and weight remain poorly documented in standardized databases, though adults are generally robust for a rodent, reportedly reaching body lengths of 20–35 cm excluding the tail. Geographic range details for this particular record remain incompletely documented in available data sources. Ecologically, the common water rat is an important apex predator in small-scale freshwater food webs and serves as an indicator species for wetland health in Australian riparian systems.