2-spot ladybird vs

Adalia bipunctata compared with Chrysosphaerella longispina

Key Differences

2-spot ladybird is Vulnerable while is Not Evaluated.

Taxonomic Classification

Rank	2-spot ladybird
Kingdom	Animalia (動物)	Chromista (クロミスタ)
Phylum	Arthropoda (節足動物)	Ochrophyta (オクロ植物)
Class	Insecta (昆虫)	Chrysophyceae (黄金色藻)
Order	Coleoptera (コウチュウ目)	Ochromonadales (Ochromonadales)
Family	Coccinellidae	Paraphysomonadaceae
Genus	Adalia	Chrysosphaerella
Species	Adalia bipunctata	Chrysosphaerella longispina

Conservation Status

2-spot ladybird

VU — Vulnerable

NE — Not Evaluated

Physical Characteristics

Attribute	2-spot ladybird
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

2-spot ladybird

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests spanning the Indomalayan and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan), Europe (4 countries), North America (Canada, United States), and South America (Chile). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

2-spot ladybird

The 2-spot ladybird (Adalia bipunctata) is a species in the genus Adalia. It is listed as Vulnerable on the IUCN Red List. It is found across Belgium, Canada, Chile, and 2 other countries, inhabiting Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate broadleaf and mixed forests, and temperate coniferous forests spanning the Indomalayan and Oceanian and Palearctic realms. Populations.

Chrysosphaerella longispina is a colonial chrysophyte alga in the genus Chrysosphaerella, notable for the long silica spines (longispina: Latin, long spine) that project from each cell in the colony. The genus is characterized by spherical or discoid colonies of photosynthetic cells that each secrete siliceous scales and elongated spine-like appendages, making Chrysosphaerella colonies distinctively bristled and visible under light microscopy. The long spines of C. longispina likely serve as anti-predation structures that make the colonies more difficult for zooplankton to ingest. C. longispina is found in cold, oligotrophic freshwater lakes, particularly in Scandinavia, where comprehensive chrysophyte surveys have documented its presence. Chrysosphaerella colonies contribute to freshwater primary production and the cycling of biogenic silica, which upon cell dissolution is deposited in lake sediments as microscopically identifiable remains. These silica structures are widely used by paleolimnologists to reconstruct past changes in lake water chemistry, thermal stratification, and climate. The conservation status of C. longispina has not been assessed by the IUCN; the species is listed as Not Evaluated.