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<em>Bactrocera umbrosa</em>

Bactrocera umbrosa

Breadfruit fruit fly
Previous scientific names: Dacus umbrosus, Strumeta umbrosa, Dacus (Strumeta) umbrosus, Dacus (Bactrocera) umbrosus, Strumeta frenchi


Morphological – adult

Features include:

  • medium sized species
  • medium sized black facial spots present
  • postpronotal lobes and notopleura yellow
  • scutum black, mesopleural stripe reaching to postpronotal lobe, lateral postsutural vittae present, medial postsutural vitta absent, scutellum yellow
  • wing with a broad fuscous costal band and anal streak, three transverse reddish-fuscous bands across wing with the basal one joining with the anal streak, cells bc and c fulvous with microtrichia in outer ½ of cell c only
  • abdominal terga varying from orange-brown with a medial longitudinal black stripe on terga IV and V to orange-brown with a broad medial and two broad longitudinal black bands over terga III-V
  • posterior lobe of male surstylus short
  • female with apex of aculeus needle shaped (Drew 1989; Drew and Romig 2013).

Morphological – larvae

See White and Elson-Harris 1992 p. 238.


Host Range

Bactrocera umbrosa has been recorded on hosts from only the family Moraceae (for a full list of recorded hosts see Allwood et al. 1999; Leblanc et al. 2012).

Major commercial hosts (Allwood et al. 1999):

  • Artocarpus altilis (breadfruit)
  • Artocarpus heterophyllus (jackfruit)



Widespread and very common in Malaysia, southern Thailand, Philippines, Indonesia, Palau, Papua New Guinea (much less common in the Highlands), Solomon Islands, Vanuatu and New Caledonia (Drew and Romig 2013).


Similar species

Bactrocera umbrosa bears no close resemblance to other species. It is easily recognised by the three broad transverse bands across the wings (Drew 1989; Drew and Romig 2013).

However, there are a few other PNG ME-responsive non-pest species that have bands on the wings and similar pattern on the abdomen that may superficially appear similar e.g. B. seguyi and B. confluens.

Pest Status

  • Exotic
  • Major pest of Artocarpus species


Methyl eugenol.