Da xióngmāo vs common pygmy woodlouse

Ailuropoda melanoleuca compared with Trichoniscus pusillus

Key Differences

• Da xióngmāo is Vulnerable while common pygmy woodlouse is Least Concern.

Taxonomic Classification

Rank	Da xióngmāo	common pygmy woodlouse
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Chordata (脊索动物门)	Arthropoda (节肢动物门)
Class	Mammalia (哺乳動物)	Malacostraca (软甲纲)
Order	Carnivora (食肉目)	Isopoda (等足目)
Family	Ursidae (Bears)	Trichoniscidae
Genus	Ailuropoda (Giant Pandas)	Trichoniscus
Species	Ailuropoda melanoleuca	Trichoniscus pusillus

Evolutionary Relationship

Da xióngmāo and common pygmy woodlouse share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

Da xióngmāo

VU — Vulnerable

Population: ~1.9K

Trend: Increasing ↑

common pygmy woodlouse

LC — Least Concern

Physical Characteristics

Attribute	Da xióngmāo	common pygmy woodlouse
Diet	Herbivore	—
Average Lifespan	20 years	—
Average Length	1.5 m	—
Average Weight	100.0 kg	—

Habitat & Geographic Range

Da xióngmāo

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and temperate broadleaf and mixed forests, among 7 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in China. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

common pygmy woodlouse

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States.

Da xióngmāo

大熊猫（Ailuropoda melanoleuca）是中国特有的濒危动物，以其黑白相间的体色和几乎完全依赖竹子的食性而闻名于世。该物种保护状态为易危（VU），是国际野生动物保护的旗舰物种，其种群数量近年来有所回升。

common pygmy woodlouse

The Common Pygmy Woodlouse, <em>Trichoniscus pusillus</em>, is a small terrestrial isopod crustacean in the family Trichoniscidae, widely distributed across Europe and introduced to North America, with records from Denmark, Norway, Portugal, Sweden, and the United States. It is one of the most abundant and widespread woodlice in temperate regions, typically found in moist, dark microhabitats including under stones, logs, leaf litter, bark, and in soil crevices in gardens, woodlands, and grasslands. <em>Trichoniscus pusillus</em> is a very small species, measuring only a few millimeters in length, with a reddish-brown to pale pink coloration and a smooth, slightly convex body. Unlike many larger woodlice, it does not roll into a ball when disturbed. The species plays an important role in decomposition and nutrient cycling, fragmenting decaying plant material and facilitating microbial breakdown. It is parthenogenetic in many parts of its range, with all-female populations reproducing without males. The species is assessed as Least Concern on the IUCN Red List given its abundance and widespread distribution. Biological traits such as average lifespan, body size, and specific dietary preferences remain poorly documented for this species.