Common Silver Hairgrass vs Common thrip

Aira caryophyllea compared with Thrips trehernei

Key Differences

• Common Silver Hairgrass is Endangered while Common thrip is Not Evaluated.

Taxonomic Classification

Rank	Common Silver Hairgrass	Common thrip
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Liliopsida (Monocots)	Insecta (Insects)
Order	Poales (Grasses)	Thysanoptera (Thysanoptera)
Family	Poaceae (Grass Family)	Thripidae
Genus	Aira	Thrips
Species	Aira caryophyllea	Thrips trehernei

Conservation Status

Common Silver Hairgrass

EN — Endangered

Common thrip

NE — Not Evaluated

Physical Characteristics

Attribute	Common Silver Hairgrass	Common thrip
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Silver Hairgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cameroon), Asia (Japan, South Korea), Europe (6 countries), North America (4 countries), Oceania and the Pacific (Australia), and South America (4 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Common thrip

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

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

Common Silver Hairgrass

<em>Aira caryophyllea</em>, commonly known as Common Silver Hairgrass, is a slender annual grass belonging to the family Poaceae within the order Poales. This delicate grass is currently classified as Endangered on the IUCN Red List, reflecting significant conservation concern despite its historically broad distribution. It is typically found across a remarkable diversity of biome types, including tropical and subtropical moist broadleaf forests, grasslands, savannas, and flooded habitats, demonstrating notable ecological versatility. Its geographic range spans multiple continents, with documented populations in Africa (Cameroon), Asia (Japan, South Korea), Europe, North America, Australia, and South America. As an annual grass, it completes its life cycle within a single growing season, reproducing via wind-dispersed seeds. The inflorescence typically bears silvery, shimmering spikelets that give the species its common name. Biological traits such as average lifespan, body dimensions, and dietary specifics follow typical patterns for annual grasses — drawing nutrients from soil through root absorption rather than consuming other organisms. The endangered status suggests populations may be declining due to habitat loss, land-use change, or invasive species pressure across parts of its range.

Common thrip

<em>Thrips trehernei</em> is a species of thrips in the order Thysanoptera, family Thripidae, recorded from Denmark, Norway, Sweden, and the United States. It is Not Evaluated on the IUCN Red List. Relatively little is known about the ecology and biology of this species compared to economically significant thrips. Like other thysanopterans, it is likely a plant feeder, inhabiting flowers, foliage, or bark surfaces of host plants in temperate regions where it occurs. The genus <em>Thrips</em> is large and diverse, with many species associated with specific plant hosts or habitats. This species has been recorded from Scandinavian and North American localities, suggesting a trans-Atlantic distribution, possibly facilitated through plant trade or natural dispersal. Adult thrips are minute insects typically measuring 1–2 millimeters in length, with characteristically fringed wings. Biological traits such as precise host plant associations, body weight, lifespan, reproductive output, and generation time remain poorly documented in standardized scientific assessments for <em>Thrips trehernei</em> specifically.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States