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Fruit fly

Image of Fruit-fly (Bactrocera dorsalis , B . zonatus  and B. correctus)

Fruit Fly are very small insects  that  lay their eggs in various plant tissues. The Tephritidae contains about 1,200 species characterized by wide heads, black or steely green or blue bodies, iridescent greenish eyes, and wings that are usually mottled brown or black. Some species, e.g., the goldenrod gall fly (Eurosta solidaginis) which deposits its eggs in species of goldenrod, lay their eggs in plants of no economic importance. The Drosophilidae, or pomace flies, are yellowish and in the wild are largely found around decaying vegetation. The larvae living in fruit actually feed on the yeasts growing in the fruit.

Bactrocera dorsalis is a species of tephritid fruit fly that is endemic to Southeast Asia, but has also been introduced to Hawai'i, the Mariana Islands and Tahiti. It is one of the major pest species in the genus Bactrocera with a broad host range of cultivated and wild fruits, second in damage only to B. papayae.

The main hosts of  Bactrocera zonata are guava, mango and peach.  Secondary hosts include apricot, fig and citrus. B. zonata has been recorded on over 50 cultivated and wild plant species, mainly those with fleshy fruits.

Bactrocera correcta is a brightly colored little fly, predominately black with lateral yellow stripes, approximately 5.4 mm in length. In his original description of B. correcta (as Chaetodacus correctus, Bezzi (1915)) stated that B. correcta was very near D. zonatus (now Bactrocera zonata (Saunders) - the peach fruitfly), but it is distinguished by the color of the thorax, and chiefly by the facial black spots being united to form a black transverse band; the whitish cross-band on the second abdominal segment is less developed, and the hind tibiae of the male are distinctly tuberculate before the end, similar to that of two closely related species, B. zonata (previously D. zonatus) and B. tuberculata (Bezzi) (previously D. tuberculatus).