Black Marram Weevil vs Clay-Coloured Weevil

Otiorhynchus atroapterus compared with Otiorhynchus singularis

Taxonomic Classification

Rank	Black Marram Weevil	Clay-Coloured Weevil
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Arthropoda (절지동물)	Arthropoda (절지동물)
Class same	Insecta (곤충)	Insecta (곤충)
Order same	Coleoptera (딱정벌레목)	Coleoptera (딱정벌레목)
Family same	Curculionidae	Curculionidae
Genus same	Otiorhynchus	Otiorhynchus
Species	Otiorhynchus atroapterus	Otiorhynchus singularis

Evolutionary Relationship

Black Marram Weevil and Clay-Coloured Weevil share a common ancestor at the Genus level: Otiorhynchus.

Conservation Status

Black Marram Weevil

LC — Least Concern

Clay-Coloured Weevil

LC — Least Concern

Physical Characteristics

Attribute	Black Marram Weevil	Clay-Coloured Weevil
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black Marram Weevil

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (12 countries).

Clay-Coloured Weevil

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (32 countries) and North America (Canada, United States).

Black Marram Weevil

The Black Marram Weevil (Otiorhynchus atroapterus) is a species in the genus Otiorhynchus. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

Clay-Coloured Weevil

The Clay-coloured Weevil, Otiorhynchus singularis, is a small flightless beetle in the family Curculionidae native to Europe and widely established as an introduced pest in many parts of North America and other temperate regions. The adult weevil is typically 5–7 mm in length, mottled gray-brown or clay-colored with patches of pale scales that provide camouflage against bark and soil. Like other Otiorhynchus weevils, the Clay-coloured Weevil is parthenogenetic in most introduced populations, consisting entirely of females that reproduce without mating. Adults are nocturnal, feeding on the foliage and bark of a wide range of host plants including strawberries, raspberries, currants, ornamental shrubs, and nursery stock. The larvae develop in soil, feeding on roots and causing significant damage that can girdle and kill established plants. The species is considered a serious horticultural pest in affected regions, causing economic losses in soft fruit production, nurseries, and ornamental plantings. Management typically involves biological control using entomopathogenic nematodes or fungi, as chemical control of soil-dwelling larvae is difficult. The species is well established across temperate Europe and has been accidentally introduced to parts of North America through the horticultural trade.

Shared Countries

Both species can be found in 12 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇮 Finland 🇩🇪 Germany 🇮🇸 Iceland 🇮🇪 Ireland 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇱 Poland 🇸🇪 Sweden 🇬🇧 United Kingdom