Oriental fruit fly (Bactrocera dorsalis)

Latin Name	Observation Date	Location
Bactrocera dorsalis	May 30, 2026	Purulia, Natore, Bangladesh

Greetings to all in the Nature Observer community

Today I came across a very beautiful and colorful fly sitting on a mango. Although it looks harmless and attractive, after a little research, I found out that it is a huge threat to farmers.

I found some great information about this strange fly from Wikipedia and Google, which I am sharing with you today:

​Name: Its common name is Oriental fruit fly.

​Scientific name: The scientific name of this fly is Bactrocera dorsalis.

​Family: It is a fly belonging to the family Tephritidae.

​Genus: Its genus or genus is Bactrocera.

​Size: The body length of the adult fly is about 8.0 millimeters and the wingspan is about 7.3 millimeters.

​Nation and habitat: They are mainly native to Southeast Asia. However, they have been introduced by humans to at least 65 countries around the world, including Hawaii. They prefer to pupate in shady and moist soil.

​Food: They lay their eggs on more than 200 fruit trees, including mango, papaya, and avocado. The adults feed on rotten fruit and plant nectar.

​Reproduction: Female flies pierce the skin of the fruit and lay their eggs inside, and the larvae grow by feeding on the soft parts of the fruit. They can fly long distances (up to 37 km has been recorded in Hawaii) in search of new places to lay their eggs. Their flying ability reaches its peak at 15 days of age.

​Benefits: In Southeast Asia, they help pollinate some wild orchids. In addition, they have a symbiotic relationship with certain bacteria in their bodies, which directly affects their foraging behavior.

Harm: This is a very harmful pest of fruits and vegetables. The fruits rot very quickly due to the invasion of larvae and the entry of other microorganisms. They are most widely spread from one region to another due to the transportation and smuggling of fruits by humans.

Control management: To avoid their attack, wrapping the fruits with polythene or paper and quickly removing the spoiled fruits from the garden (field sanitation) is very important. In Hawaii, a type of parasitoid wasp (Fopius arisanus) is used to control them, which lays its eggs inside the eggs of the flies and destroys them. However, the concern is that due to genetic changes, they are now developing resistance very quickly against organophosphorus pesticides.

I was quite surprised to learn about this small but destructive creature of nature. I hope the information is useful to you too.

I learned about them from various sites including iNaturalist, Wikipedia and Google.

(All posts are written in Bengali and translated into English using Google Translate.)
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Camera Used	Samsung SM-G973F
F-Stop	F2.4
ISO speed	ISO
Focal length	26mm
Flash	No
Editing app	MIX
Cassidinae	Oriental fruit fly (Bactrocera dorsalis)
Photographer	@mshbd
Location	Purulia, Natore, Bangladesh

Link to original community
https://www.inaturalist.org/observations/367202358

Latitude	Longitude	Map Link
24.3366	89.1117	https://www.openstreetmap.org/?#map=12/24.3366/89.1117