Brook Floater vs Common Straw Grasshopper

Alasmidonta varicosa compared with Euchorthippus declivus

Key Differences

• Brook Floater is Vulnerable while Common Straw Grasshopper is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Common Straw Grasshopper
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Orthoptera (Orthoptera)
Family	Unionidae	Acrididae
Genus	Alasmidonta	Euchorthippus
Species	Alasmidonta varicosa	Euchorthippus declivus

Evolutionary Relationship

Brook Floater and Common Straw Grasshopper share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Common Straw Grasshopper

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Common Straw Grasshopper
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

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

Common Straw Grasshopper

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

Common Straw Grasshopper

<em>Euchorthippus declivus</em>, the common straw grasshopper, is an orthopteran insect in the family Acrididae, order Orthoptera. It is found primarily in dry grasslands, steppe habitats, and open scrubland across much of central and southern Europe and western Asia. The species is a typical grassland acridid, feeding on grasses and herbaceous plants, and is active during warmer months of the year. Males are notably smaller than females, and the species produces stridulatory sounds used in mate attraction, a characteristic of the family. <em>Euchorthippus declivus</em> plays an important role in grassland food webs as both herbivore and prey for birds, reptiles, and invertebrate predators. Geographic range data beyond its general European distribution remain incompletely documented at the global scale. Biological traits including average lifespan, body measurements under field conditions, and detailed dietary specificity remain poorly documented in the scientific literature. The species is currently assessed as Least Concern by the IUCN, indicating no immediate conservation threats, though grassland habitat loss across Europe may pose long-term pressures on local populations.