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<em>Bactrocera jarvisi</em>

Bactrocera jarvisi

Jarvis’ fruit fly
Previous scientific names: Chaetodacus jarvisi Tryon, Chaetodacus jarvisi var. careya, Dacus (Chaetodacus) australis, Dacus (Chaetodacus) australis var. halterata, Dacus (Afrodacus) jarvisi, Afrodacus jarvisi

Diagnosis

Morphological – adult

Features include:

  • medium sized species
  • medium sized irregularly oval black facial spots present
  • postpronotal and notopluera yellow and connected by a broad yellow band
  • scutum red-brown, mesopleural stripe reaching almost to anterior npl. seta, lateral postsutural vittae present, medial postsutural vittae absent, wing with a narrow fuscous costal band that expands at the wing apex and broad fuscous anal streak, cells bc and c colourless with microtrichia in outer corner of cell c only
  • abdominal terga III-V orange-brown except for a fuscous to black transverse band across anterior margin of tergum III and fuscous to black medial longitudinal band generally over all three terga but often variable
  • posterior lobe of male surstylus long
  • female with aculeus tip needle shaped (Drew 1989; pers. comm.Drew 2010).

Morphological – larvae

See White and Elson-Harris 1992 p. 169.

Molecular

PCR-RFLP Test 1

BsrI: 600, 250

HinfI: 770

HhaI: 650, 180

Sau3AI: 420

SnaBI: Does not cut

SspI: 700

Vspl: Does not cut

Approximate ITS1 fragment length – gel: 820 bp.

PCR-RFLP Test 2

SspI produces a diagnostic pattern.

SspI: 880, 640, 100

Additional restriction enzymes can be chosen based on relative distinctiveness from other species potentially trapped; see Restriction enzyme haplotype chart and Diagnostic restriction patterns.

Host Range

Bactrocera jarvisi has been recorded on hosts from a wide range of families. These include:

  • Anacardiaceae
  • Annonaceae
  • Arecaceae
  • Cactaceae
  • Caricaceae
  • Celastraceae
  • Chrysobalanaceae
  • Clusiaceae
  • Combretaceae
  • Curcurbitaceae
  • Ebenaceae
  • Elaeocarpaceae
  • Lauraceae
  • Lecythidaceae
  • Malpighiaceae
  • Meliaceae
  • Moraceae
  • Musaceae
  • Myrtaceae
  • Oleaceae
  • Oxalidaceae
  • Passifloraceae
  • Punicaceae
  • Rosaceae
  • Rubiaceae
  • Rutaceae
  • Sapindaceae
  • Sapotaceae
  • Solanaceae.

Commercial hosts include mango, guava, papaw, persimmon, avocado, banana, pomegranate, apple, peach, pear, citrus, edible Syzygium.

For a full list of recorded hosts see Hancock et al. 2000.

Major commercial hosts:

  • Carica papaya (papaw)
  • Mangifera indica (mango)
  • Musa species (banana)
  • Prunus persica (peach)
  • Psidium guajava (guava)

Distribution

Northern Australia from Broome, Western Australia to eastern Arnhem Land, Northern Territory and northwest Queensland, Torres Strait islands and eastern Australia from Cape York to the Sydney district, New South Wales (Hancock et al. 2000).

In recent tests using zingerone, B. jarvisi was not detected in Sydney and the southern boundary is considered to be somewhere north of Sydney (Dominiak et al. 2015b).

Distribution is closely linked to the main host cocky apple (Planchonia careya) which has its southern boundary between Maryborough and Brisbane. Has been recorded from Indonesia (Irian Jaya) by White and Elson-Harris on one occasion but is not established there and should not be regarded as a permanent record (Drew 2010 pers. comm.).

Indonesia (West Papua); Papua New Guinea (Mainland) (Leblanc et al. 2012)

Similar species

Bactrocera jarvisi is similar to B. zonata but differs in having a joining band between the ppn. lobe and notopleural calli, a continuous costal band (instead of an isolated apical oval spot), anal streak present and a more defined T on the abdomen. It is also zingerone and cue-responsive whereas B. zonata is ME-responsive.