Große Veränderliche Grasbüscheleule vs Große Fettspinne

Apamea crenata compared with Steatoda grossa

Taxonomic Classification

Rank	Große Veränderliche Grasbüscheleule	Große Fettspinne
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Arthropoda (Gliederfüßer)	Arthropoda (Gliederfüßer)
Class	Insecta (Insekten)	Arachnida (Spinnentiere)
Order	Lepidoptera (Schmetterlinge)	Araneae (Webspinnen)
Family	Noctuidae	Theridiidae
Genus	Apamea	Steatoda
Species	Apamea crenata	Steatoda grossa

Evolutionary Relationship

Große Veränderliche Grasbüscheleule and Große Fettspinne share a common ancestor at the Phylum level: Arthropoda. (Gliederfüßer)

Ansehen Phylum: Arthropoda

Conservation Status

Große Veränderliche Grasbüscheleule

LC — Least Concern

Große Fettspinne

LC — Least Concern

Physical Characteristics

Attribute	Große Veränderliche Grasbüscheleule	Große Fettspinne
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Große Veränderliche Grasbüscheleule

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Asia (Taiwan) and Europe (5 countries).

Große Fettspinne

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Widely distributed across Africa (South Africa), Europe (29 countries), North America (Canada, United States), and South America (Ecuador).

Große Veränderliche Grasbüscheleule

The clouded bordered brindle (Apamea crenata) is a noctuid moth in the family Noctuidae found across temperate Europe and across northern Asia to Japan. The adult wingspan measures approximately 38–45 mm, with intricately patterned grey-brown and buff forewings bearing subtle cross-lines, a scalloped (crenate) outer margin giving the species its name, and distinctive reniform and orbicular markings characteristic of the Apamea genus. Adults fly in one generation from May to July, visiting flowers for nectar at night. The larvae feed internally within the stems and roots of grasses, particularly Brachypodium and other coarse grass species in woodland rides, woodland margins, and rough grassland habitats. Overwintering occurs as a larva within plant stems. Like many grass-feeding noctuids, the clouded bordered brindle requires structural diversity in its grassland and woodland edge habitats, with areas of tall, tussocky grasses providing both larval foodplants and adult shelter. Population trends in parts of its European range reflect changes in land management affecting coarse grassland and woodland ride quality.

Große Fettspinne

The false black widow (Steatoda grossa) is a cosmopolitan cobweb spider in the family Theridiidae, often mistaken for the true black widow due to its similarly dark, globose abdomen, though it lacks the red hourglass marking. Females reach 6–10 millimeters in body length and display a deep purplish-brown to nearly black coloration with faint pale markings on the dorsal abdomen. Originally native to western Europe, Steatoda grossa has spread globally through human commerce, establishing populations in Australia, New Zealand, North America, and other regions where it thrives in human structures including homes, sheds, and outbuildings. The spider constructs a persistent, tangled cobweb in sheltered corners and recesses, where it captures woodlice, ants, beetles, and other arthropods—notably targeting invertebrates that many other spiders avoid. The venom of S. grossa causes steatodism, a syndrome of localized pain, sweating, and systemic discomfort that is rarely serious but can cause significant distress. Interestingly, the antivenin produced for Latrodectus (true widow) spider bites has been shown to effectively treat Steatoda envenomations, underscoring the phylogenetic relatedness of these genera. Females produce several egg sacs during a season, each containing dozens of eggs wrapped in distinctive silken cocoons. The species is classified as Least Concern given its expanding global distribution facilitated by human activity.