瓶鼻海豚 vs Common Stiletto

Tursiops truncatus compared with Thereva nobilitata

Taxonomic Classification

Rank	瓶鼻海豚	Common Stiletto
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)	Insecta (昆蟲綱)
Order	Cetacea (Whales & Dolphins)	Diptera (雙翅目)
Family	Delphinidae (Oceanic Dolphins)	Therevidae
Genus	Tursiops (Bottlenose Dolphins)	Thereva
Species	Tursiops truncatus	Thereva nobilitata

Evolutionary Relationship

瓶鼻海豚 and Common Stiletto share a common ancestor at the Kingdom level: Animalia. (动物界)

Conservation Status

瓶鼻海豚

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Common Stiletto

LC — Least Concern

Physical Characteristics

Attribute	瓶鼻海豚	Common Stiletto
Diet	Carnivore	—
Average Lifespan	45 years	—
Average Length	3.0 m	—
Average Weight	300.0 kg	—

Habitat & Geographic Range

瓶鼻海豚

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Common Stiletto

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

瓶鼻海豚

作为研究最广泛、最受认可的海豚物种，宽吻海豚栖息于全球从沿岸浅水到远洋的温暖和温带海域。高度智能，大脑相对体型较大，展示自我认知、复杂交流和社会学习。生活在流动的分裂-融合社会中，合作围捕鱼群。是海洋生态系统健康的关键指示物种。

Common Stiletto

<em>Thereva nobilitata</em>, commonly known as the common stiletto fly, is a medium-sized fly in the family Therevidae, distributed across Europe and parts of western Asia. This species typically inhabits sandy heathlands, coastal dunes, river sandbars, open grasslands, and sparsely vegetated sandy soils where both adults and larvae can exploit loose substrates. Its geographic range extends across much of Europe from the British Isles and Scandinavia south to the Mediterranean, with records extending into parts of North Africa and western Asia. Classified as Least Concern on the IUCN Red List, <em>Thereva nobilitata</em> is among the more frequently encountered therevid flies in European sandy habitats. Adult stiletto flies are predatory, typically hunting small soft-bodied insects on the ground and in low vegetation. The larvae are also predatory, living in soil or sand where they hunt other soil-dwelling invertebrate larvae. Adults are typically grey-bodied with silvery-grey pruinosity and mottled wings, reaching a body length of approximately 10–15 mm. Biological traits such as average lifespan in years, precise body weight, and detailed dietary preferences at the prey species level remain poorly documented for this species. Adults are typically active during warm, sunny weather from late spring through summer.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden