Taxonomy
Valid name:
Bactrocera (
Bactrocera)
trivialis (Drew, 1971)
Preferred common name: New Guinea fruit fly
Synonyms:
Dacus trivialis (original name in Drew, 1971)
Morphology-based identification
Bactrocera trivialis can be identified reliably based on morphology. Spot characters are the costal band crossing vein R2+3 and the abdomen pattern.
Molecular identification
COI sequencing can be used to identify
B. trivialis (
Doorenweerd et al. 2024Doorenweerd et al. 2024:
Doorenweerd C, San Jose M, Leblanc L, Barr N, Geib SM, Chung AYC, Dupuis JR, Ekayanti A, Fiegalan E, Hemachandra KS, Hossain MA, Huang C, Hsu Y, Morris KY, Maryani A. Mustapeng A, Niogret J, Pham TH, Thi Nguyen N, Sirisena UGAI, Todd T, Rubinoff D, 2024. Towards a better future for DNA barcoding: Evaluating monophyly‐ and distance‐based species identification using COI gene fragments of Dacini fruit flies. Molecular Ecology Resources 24: e13987. https://doi.org/10.1111/1755-0998.13987). Alternatively, a faster method is available to distinguish
B. trivialis from
B. breviaculeus and
B. rufofuscula with a LAMP assay; see
Starkie et al. 2022bStarkie et al. 2022b:
Starkie ML, Fowler EV, Zhu X, Agarwal A, Rako L, Schneider IC, Schutze MK, Royer JE, Gopurenko D, Gillespie P, Blacket MJ (2022) Loop-mediated isothermal amplification (LAMP) assays for detection of the New Guinea fruit fly Bactrocera trivialis (Drew) (Diptera: Tephritidae). Scientific Reports 12: 12602. https://doi.org/10.1038/s41598-022-16901-0 for details.
Distribution
Bactrocera trivialis has been recorded from New Guinea and the Torres Strait Islands, which is its presumed native range.
Further information
Bactrocera trivialis is reported as a "category C" oligophagous fruit pest in New Guinea in
Vargas et al. 2015Vargas et al. 2015:
Vargas RI, Pinero JC, Leblanc L, 2015. An overview of pest species of Bactrocera fruit flies (Diptera: Tephritidae) and the integration of biopesticides with other biological approaches for their management with a focus on the pacific region. Insects 6: 297–318. https://doi.org/10.3390/insects6020297. A category C pest is there defined as "relatively minor oligophagous or specialist fruit or cucurbit pests". It is of particular concern in Australia, which is close to its current distribution range, and can attack 17 host plants across 10 families, including starfruit, citrus, guava, mango, and chili (
Starkie et al. 2022bStarkie et al. 2022b:
Starkie ML, Fowler EV, Zhu X, Agarwal A, Rako L, Schneider IC, Schutze MK, Royer JE, Gopurenko D, Gillespie P, Blacket MJ (2022) Loop-mediated isothermal amplification (LAMP) assays for detection of the New Guinea fruit fly Bactrocera trivialis (Drew) (Diptera: Tephritidae). Scientific Reports 12: 12602. https://doi.org/10.1038/s41598-022-16901-0).
