Bactrocera (Bactrocera) aethriobasis (Hardy)

David, K. J., Hancock, D. L., Singh, Shakti Kumar, Ramani, S., Behere, G. T. & Salini, S., 2017, New species, new records and updated subgeneric key of Bactrocera Macquart (Diptera: Tephritidae: Dacinae: Dacini) from India, Zootaxa 4272 (3), pp. 386-400 : 391

Bactrocera (Bactrocera) aethriobasis (Hardy)

( Figures 2a–h )

Dacus aethriobasis Hardy, 1973: 30 .

Bactrocera (Bactrocera) aethriobasis —Norrbom et al., 1999: 87; Drew and Romig, 2013.

Diagnosis. Large sized (7.8̄ 8.3 mm), reddish brown species. Face fulvous with circular, black spot in each antennal furrow, scutum reddish brown, with broad, yellow lateral postsutural vitta of uniform width ending beyond intra-alar seta, medial vitta lacking, anepisternal stripe broad reaching anterior notopleural seta, continued as a transverse spot on katepisternum, scutellum yellow with narrow, black basal band, mediotergite and subscutellum red-brown medially and black laterally. All femora fulvous without fuscous markings, tibia, tarsal segments fulvous. Wing (6.9̄ 7.3 mm) predominantly hyaline, cell bc and c hyaline, narrow costal band from cell sc to wing apex confluent with vein R2+3, faint beyond the vein, extension of cell bcu longer than bcu, anal streak present. Abdomen oval, all tergites black, except fulvous tergites I+II, tergites IIĪV with submedial orange-red patches, tergite III with pecten, sternite V of male with a deep posterior emargination.

Male genitalia: Epandrium and surstyli elongate-oval in outline (posterior view), epandrium as long as lateral surstylus in profile; posterior lobe of surstylus blunt, as long as anterior lobe. Proctiger membraneous, quadrate, smaller than epandrium. Medial surstylus longer than lateral surstylus, tapering towards apex with a pair of thick prensisetae. Aedeagus 4.2¯ 4.5 mm long excluding glans (0.47 mm); 0.75 of glans sclerotised with well developed acrophallus, unpatterned praeputium; subapical lobe and basal lobe present.

Material examined. 6♂♂, INDIA, Meghalaya, Umiam , ICAR ̄NEH, G.T. Behere ( NBAIR)

Male parapheromone. Methyl eugenol.

Host plant. Azadirachta indica (Meliaceae) ( Drew and Romig, 2013).

Known distribution. Thailand, Bhutan, Southern Vietnam, Peninsular Malaysia ( Drew and Romig, 2013)

Remarks. Bactrocera aethriobasis is similar to B. versicolor and B. affinis in possessing a reddish brown scutum and narrow costal band but can be differentiated by its black abdominal tergites IIĪV and a broad anepisternal stripe reaching anterior notopleural seta.

Figures

FIGURES 2 a – h. Bactrocera (Bactrocera) aethriobasis (Hardy). a, head (profile view); b, scutum (dorsal view); c, thorax (lateral view) and legs; d, abdomen; e, wing; f, epandrium, proctiger and surstyli (lateral view); g, epandrium and susrtyli (posterior view); h, glans of phallus (lateral view).