Promachus yesonicus

Promachus yesonicus
Promachus yesonicus, Adult, South Korea
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	Pancrustacea
Class:	Insecta
Order:	Diptera
Family:	Asilidae
Genus:	Promachus
Species:	P. yesonicus
Binomial name
Promachus yesonicus (Bigot, 1887)

Promachus yesonicus, or shioya-abu (塩屋虻, シオヤアブ) in Japanese, is a species of robber flies. In Japanese, "shioya" means a salt merchant (someone who makes or deals in salt), and "abu" means a horse-fly. This insect is called "shioya-abu" because the males have a white tip to their tail that resembles salt.

Distribution

Promachus yesonicus is found throughout Japan from Hokkaido to Okinawa. They are visible from June to September.

Description

Male Promachus yesonicus have a white cotton-like bud at the end of their tails, while females do not. Adults can reach 23–30 millimetres (0.9–1.2 in) in length.

• Female Promachus yesonicus in Tokyo
• 
  Female in Tokyo, Japan
• Male in Tokyo, Japan
• 
  Male in Japan
• 
  Male in Fukuoka, Japan

References

Media related to Promachus yesonicus at Wikimedia Commons

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