Bactrocera (Bactrocera) nigrofemoralis White & Tsuruta

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 : 4

Bactrocera (Bactrocera) nigrofemoralis White & Tsuruta

Bactrocera (Bactrocera) nigrofemoralis White & Tsuruta , in Tsuruta & White, 2001: 79. Holotype male in BMNH.

Material examined. – BHUTAN: 2 males (6 May.2000) , 2 males (20 May.2000), Phuentsholing, coll. S. Thapa; 1 male, Rimchu 1, 7 Jun.2000, coll. C. Dorji et al .; 1 male, Gelephu , Purana Bastey, 1 Feb.2005, coll. Maha Prasad & Karma Namgyel. All specimens attracted to cue lure. Specimens in NPPC and QDPI .

Diagnosis. – Face entirely black except narrow fulvous lateral margins and dorsally below antennal sockets; scutum entirely black, postpronotal lobes and notopleura yellow, mesopleural stripe reaching anterior npl. seta dorsally, narrow parallel sided lateral postsutural vittae reaching to 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 except for narrow to medium black basal band; legs with fore femora shining black on entire outer surfaces, fulvous on inner surfaces and on basal and apical extremities, mid femora entirely shining black except dark fulvous on basal and apical extremities, hind femora fulvous except shining black on apical 1/3, fore tibiae fuscous, mid tibiae dark fulvous tending pale fuscous basally, hind tibiae dark fuscous, tarsal segments entirely fulvous tending darker fulvous on apical four segments; wings with cells bc and c colourless, microtrichia in outer corner of cell c only, a narrow fuscous costal band confluent with R 2+3 and remaining very narrow around costal margin to end at apex of R 4+5, a very narrow fuscous cubital streak, supernumerary lobe weak; abdominal tergum III dark fuscous to black except red-brown posterocentrally either side of a narrow medial longitudinal black band, tergum IV fuscous to dark fuscous except red-brown posterocentrally either side of a narrow medial longitudinal black band (the posterocentral red-brown markings extend towards the lateral margins), tergum V red-brown with dark fuscous anterolateral corners and a narrow medial longitudinal fuscous to black band, a pair of oval dark fuscous to black shining spots on tergum V.

Attractant. – Cue lure.

Distribution. – Southern India, Sri Lanka. New record for Bhutan.

Hosts. – Terminalia catappa (Family Combretaceae ) (see Tsuruta et al., 1997).

Remarks. – This species belongs to a group similar to Bactrocera nigrotibialis (Perkins) , having a black scutum, wings with a narrow fuscous costal band and cubital streak, femora and tibiae with extensive areas of black and abdominal terga mostly black. It is distinct in possessing a broader mesopleural stripe reaching dorsally to the anterior npl. seta, and the lateral postsutural vittae narrow, parallel sided and reaching to the ia. seta. It is not known to be a pest species.