Black roughscale catshark vs Common cattle grub

Apristurus melanoasper compared with Hypoderma lineatum

Key Differences

• Black roughscale catshark is Least Concern while Common cattle grub is Extinct.

Taxonomic Classification

Rank	Black roughscale catshark	Common cattle grub
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Insecta (Insects)
Order	Carcharhiniformes (Ground Sharks)	Diptera (Diptera)
Family	Scyliorhinidae	Oestridae
Genus	Apristurus	Hypoderma
Species	Apristurus melanoasper	Hypoderma lineatum

Evolutionary Relationship

Black roughscale catshark and Common cattle grub share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black roughscale catshark

LC — Least Concern

Common cattle grub

EX — Extinct

Physical Characteristics

Attribute	Black roughscale catshark	Common cattle grub
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black roughscale catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Common cattle grub

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Japan, Norway, Sweden, and United States.

Black roughscale catshark

The Black roughscale catshark (Apristurus melanoasper) is a species in the genus Apristurus. It is currently classified as Least Concern on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Common cattle grub

<em>Hypoderma lineatum</em>, commonly known as the common cattle grub, is a parasitic fly species with documented occurrences in Japan, Norway, Sweden, and the United States. It typically inhabited terrestrial and freshwater environments, often associated with cattle and other large ungulates on which its larvae develop as subcutaneous parasites. The species is classified as Extinct on the IUCN Red List, indicating that it is no longer known to exist in the wild. Common cattle grub belongs to the genus <em>Hypoderma</em> within the family Oestridae. Adult flies do not feed and are short-lived, while larvae burrow under the skin of host animals, causing a condition known as hypodermosis or warble fly infestation. The decline and extinction of this species has been linked to widespread and highly effective veterinary treatment programs targeting warble fly larvae in cattle, which drastically reduced host populations and ultimately eliminated the species. Biological traits such as average lifespan, body length, and mass of this species remain poorly documented in the scientific literature.