Bactrocera dorsalis

Definition

A species of tephritid fruit fly (family Tephritidae) native to Southeast Asia and a major agricultural pest with a broad host range spanning cultivated and wild fruits. Males exhibit strong attraction to methyl eugenol, a kairomone exploited in monitoring traps and male annihilation programs for area-wide management. The species also functions as a pollinator of certain Bulbophyllum orchids that produce the same compound.

Etymology

Latin dorsalis, of the back, referring to thoracic or abdominal markings; Bactrocera from Greek baktron (staff or rod) and keras (horn), alluding to the elongated ovipositor sheath typical of the genus.

Example

Detection of a single male Bactrocera dorsalis in a methyl eugenol-baited Jackson trap triggers regulatory quarantine protocols and intensified surveillance in fruit-growing regions outside its known range.

Synonyms

• Dacus dorsalis (obsolete)

Related Terms

• Tephritidae
• Bactrocera
• fruit fly
• methyl eugenol
• male annihilation technique
• quarantine pest
• Kairomone

Usage Notes

Formerly placed in Dacus; the species name is sometimes applied loosely to the Bactrocera dorsalis species complex, which includes several cryptic or recently separated taxa (e.g., B. invadens, B. philippinensis). Precise identification requires morphological or molecular verification. The methyl eugenol response is male-specific and exploited in both detection and control, but does not attract females.