Bactrocera musae

Common name  

banana fruit fly

Description

Typical of Bactrocera larvae with the following specific characteristics for the third instar:

Body. Body length 7.5–9mm.

Head. Stomal organ: number of peg sensilla two, or three (long, tapering); other peg-sensilla-like structures absent. Stomal region: secondary lobes short, leaf-like (4, large); margins of secondary lobes all entire (smooth-edged). Number of oral ridges 10–15; margins scalloped (large, long, bluntly rounded teeth; fringelike). Accessory plates elongate, some of the more posterior plates interlocking with oral ridges; number of accessory plates 10–15; margins serrated (deeply serrated). Median oral lobe absent or not protruding.

Spinules and creeping welts. Dorsal spinules on segments T1-T3.

Anterior spiracles. Anterior spiracle convex to flat. Anterior spiracular tubules 13–17.

Caudal segment (a8) and anal lobes. Anal lobes plainly visible, but not protuberant; simple.

Posterior spiracles. Slits 3x longer than wide (about). Dorsal spiracular processes with numerous trunks arising from an elongate base (long processes). Number of dorsal spiracular processes 17–24. Number of ventral spiracular processes 17–24. Number of lateral spiracular processes 7–9.

Host plants

Family	Genus
Caricaceae	Carica
Musaceae	Musa
Myrtaceae	Psidium

Part of plant attacked: fruit.

Biogeographic region and distribution

Australasian

New Guinea, Australia (Qld.), Bismarck Arch., Solomon Is.

Adult taxonomy

Bactrocera (Bactrocera) musae (Tryon)
Chaetodacus musae Tryon 1927: 197.—Australia. Queensland: Meringa. LT ♀ QMBA. Lectotype designated by Drew 1989: 93.
Chaetodacus musae var. dorsopicta Tryon 1927: 198.—not stated [probably Australia. Queensland]. T AQMBA.
Dacus nigrofasciatus Tryon 1927: 197.—Nomen nudum. Fiji. T A NSWA? Published in synonymy, not subsequently validated by usage. Attributed to Froggatt.
Chaetodacus tryoni var. musa Tryon 1927: 187.—Nomen nudum. Australia. Geraldton; Gympie; Buderim Mountain; & Stanthorpe Districts. ST A QMBA. Published without diagnosis or indication. See Drew (1989: 93).
Chaetodacus musae var. dorso-picta Tryon 1927: 198.—incosp. dorospicta Tryon.

 

References

Carroll, L. E., A. L. Norrbom, M. J. Dallwitz, and F. C. Thompson. 2004 onwards. Pest fruit flies of the world – larvae. Version: 8th December 2006. http://delta-intkey.com.

White, I. M., and M. M. Elson-Harris. 1992. Fruit flies of economic significance: their identification and bionomics. CAB International; Wallingford, UK. 601 p.