About Bactrocera tryoni (Froggatt, 1897)
Identification: Adult Bactrocera tryoni flies are reddish-brown, have distinct yellow markings, and typically measure 5–8 mm in body length. When walking, adults hold their wings horizontally and flick them in a specific, characteristic manner. The wingspan of B. tryoni ranges from 4.8 to 6.3 mm. Their overall appearance is wasp-like, so they may be mistaken for wasps. Distribution and habitat: B. tryoni prefers humid and warm climates. As a result, it is most widespread in eastern Australia, and also occurs in New Caledonia, French Polynesia, the Pitcairn Islands, and the Cook Islands. The expansion of commercial fruit production in Australia has increased the geographic area that B. tryoni can inhabit, extending its range inland as far as central Queensland and New South Wales. Outbreaks of B. tryoni occasionally occur in southern and western Australia, but coastal regions of Australia are relatively isolated from each other by intervening harsh, dry weather conditions that are unsuitable for B. tryoni. Because of this isolation, other regions of Australia typically remain free of this pest as long as infested fruit is not transported between regions.
