Bactrocera (Bactrocera) dorsalis (Hendel)

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 : 3

Bactrocera (Bactrocera) dorsalis (Hendel)

Musca ferruginea Fabricius, 1794: 342 . Preoccupied by Musca ferruginea Scopoli, 1763 (see Hardy, 1969: 396). Dacus ferrugineus – Fabricius, 1805: 274. Dacus dorsalis Hendel, 1912: 18 . Lectotype female, Taiwan:

Koshun, Formosa, ix.08 (Sauter) (BMNH). Bactrocera ferruginea – Bezzi, 1913: 95. Chaetodacus ferrugineus var. dorsalis (Hendel) , Hendel, 1915: 426. Chaetodacus ferrugineus – Bezzi, 1916: 104. Chaetodacus ferrugineus dorsalis – Bezzi, 1916: 104. Chaetodacus ferrugineus var. okinawanus Shiraki, 1933: 62 ; Hardy

& Adachi, 1956: 8; Hardy, 1969: 402 (syn.). Dacus (Strumeta) dorsalis – Hardy & Adachi, 1956: 7; Hardy,

1969: 395–402, 1973: 41–42, 1974: 29–31. Strumeta dorsalis – Hering, 1956: 63. Strumeta ferruginea – Hering, 1956: 63. Strumeta dorsalis okinawana – Shiraki, 1968: 23. Dacus (Bactrocera) dorsalis – Hardy, 1977: 49–50; Drew, 1982:

60–63; Drew, 1989: 63 n. comb. Bactrocera (Bactrocera) dorsalis – Drew & Hancock, 1994: 17;

Norrbom et al., 1998: 90.

Material examined. – BHUTAN: a large number of specimens collected in areas of Bhutan below 1500 m altitude in both cultivated and subtropical habitats. All specimens attracted to methyl eugenol. Specimens in NPPC and QDPI.

Diagnosis. – Face fulvous with a pair of medium sized circular black spots; scutum with base colour black, postpronotal lobes and notopleura yellow, mesopleural stripe reaching midway between anterior margin of notopleuron and anterior npl. seta dorsally, a pair of broad parallel sided lateral postsutural vittae ending 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. 4; scutellum yellow with a narrow black basal band; legs with segments mostly fulvous except fore tibiae pale fuscous and hind tibiae fuscous; wings with cells bc and c colourless, microtrichia in outer corner of cell c only, narrow fuscous costal band confluent with R 2+3 and remaining narrow around costal margin to end just beyond apex of R 4+5, a narrow pale fuscous cubital streak, supernumerary lobe weak; abdominal terga III-V fulvous with a black ‘T’ pattern consisting of a narrow transverse black band across anterior margin of tergum III and a narrow medial longitudinal black band over all three terga, narrow dark fuscous to black anterolateral corners on terga IV and V (in some specimens the lateral margins of tergum III tend to have medium width lateral dark fuscous to black bands, a pair of oval fulvous shining spots on tergum V (see Drew & Hancock, 1994 for a complete description).

Attractant. – Methyl eugenol.

Distribution. – Widespread from the Indian subcontinent, across southeast Asia and the northern Pacific (see Drew & Hancock, 1994).

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

Remarks. – This species has been adequately described and illustrated by Drew & Hancock (1994). It is recognized as a species of major economic significance within the dorsalis complex. The dorsalis complex comprises species with a black scutum, lateral postsutural vittae present, medial postsutural vitta absent, wings colourless except for narrow costal band, abdominal terga III-V pale with a black ‘T’ pattern.