Clay-Coloured Weevil vs Javan Rusa

Otiorhynchus singularis compared with Rusa timorensis

Key Differences

• Clay-Coloured Weevil is Least Concern while Javan Rusa is Vulnerable.

Taxonomic Classification

Rank	Clay-Coloured Weevil	Javan Rusa
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Mammalia (Mammals)
Order	Coleoptera (Beetles)	Artiodactyla (Even-toed Ungulates)
Family	Curculionidae	Cervidae (Deer)
Genus	Otiorhynchus	Rusa
Species	Otiorhynchus singularis	Rusa timorensis

Evolutionary Relationship

Clay-Coloured Weevil and Javan Rusa share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Clay-Coloured Weevil

LC — Least Concern

Javan Rusa

VU — Vulnerable

Physical Characteristics

Attribute	Clay-Coloured Weevil	Javan Rusa
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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).

Javan Rusa

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests spanning the Australasia and Afrotropic and Oceanian realms.

Range

Distributed across Mauritius, New Zealand, and Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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 1 countries:

🇳🇴 Norway