Bactrocera (Bactrocera) zonata (Saunders)

Drew, R. A. I., Romig, M. C. & Dorji, C., 2007, Records Of Dacine Fruit Flies And New Species Of Dacus (Diptera: Tephritidae) In Bhutan, Raffles Bulletin of Zoology 55 (1), pp. 1-21 : 6-7

Bactrocera (Bactrocera) zonata (Saunders)

Dasyneura zonata Saunders, 1842: 61 .

Bactrocera maculigera Doleschall, 1858: 122 .

Rivellia persicae Bigot, 1890: 192 .

Dacus ferrugineus var. mangiferae Cotes, 1893: 17 .

Bactrocera (Bactrocera) zonata – Norrbom et al., 1998: 96.

Material examined. – BHUTAN: a large number of specimens collected across Bhutan from the following locations below approx. 1600 m – Sarpang District, Purana Bastey, Gelephu ; Mongar District, Namling ; Chukha District, Phuentscholing ; Punakha District, Rimchu. All specimens attracted to methyl eugenol. Specimens in NPPC and QDPI .

Diagnosis. – Face fulvous with small circular black spots; scutum entirely red-brown, postpronotal lobes and notopleura yellow, mesopleural stripe reaching to anterior npl. seta dorsally, medium width parallel sided lateral postsutural vittae reaching just behind ia. seta, medial postsutural vitta absent; setae: sc. 2; prsc. 2; ia. 1; p.sa. 1; a.sa. 1; mpl. 1; npl. 2; scp. 2; scutellum yellow except for a narrow red-brown basal band; legs with all segments fulvous except hind tibiae pale fuscous; wings with cells bc and c colourless and devoid of microtrichia, pale fuscous costal band confluent with R 2+3 and ending at apex of this vein, small fuscous spot around apex of R 4+5, cubital streak absent but with a very pale fuscous tint in cell cup, supernumerary lobe weak; abdominal terga III- V red-brown with a narrow transverse black band across anterior margin of tergum III and expanding to dark fuscous across lateral margins and a narrow medial longitudinal black band over all three terga (these dark patterns can be reduced to a narrow transverse band across anterior margin of tergum III sometimes broken in the midline and the medial longitudinal band reduced to a narrow dark fuscous line on tergum V), a pair of oval red-brown shining spots on tergum V.

Attractant. – Methyl eugenol.

Distribution. – From Sri Lanka, India and Pakistan through to Vietnam. New Record for Bhutan.

Hosts. – A wide range of wild and commercial host plants (see Allwood et al., 1999).

Remarks. – Bactrocera zonata (Saunders) is a major pest species that appears to be confined to the dryer and more temperate climatic zones of southern and southeast Asia. It is readily distinguished by the general red-brown colour pattern of the scutum and abdomen, the wing with costal band ending at the apex of R 2+3, a small fuscous spot around apex of R 4+5 and the cubital streak absent.