Bactrocera (Calodacus) Ramani & David, 2016

David, K. J., Ramani, S., Whitmore, Daniel & Ranganath, H. R., 2016, Two new species and a new record of Bactrocera Macquart (Diptera: Tephritidae: Dacinae: Dacini) from India, Zootaxa 4103 (1), pp. 25-34 : 27-28

a. Bactrocera (Calodacus) harrietensis Ramani & David, sp. nov.

Diagnosis. Medium sized species (5.6−6.0 mm); face fulvous with two separate circular black spots; scutum reddish brown in ground colour with a broad postsutural lateral yellow vitta (0.15−0.17 mm wide) ending at intraalar seta; notopleuron and postpronotal lobe yellow, no yellow spot anterior to notopleural suture; anepisternal stripe reaching midway between anterior notopleural seta and notopleuron; scutellum with a narrow black basal band; wing predominantly hyaline with broad costal band confluent with R4+5, anal streak narrow, no dense aggregation of microtrichia around A1+Cu2; abdominal tergites III −V orange-brown with a narrow longitudinal black band (0.16 mm), lateral regions of tergites III −V with small, triangular, fuscous markings.

Description. Holotype female. Head ( Fig. 1 ): Height 1.43 mm. Frons length 1.7 times breadth; fulvous with fuscous marking on anteriomedial hump and around bases of frontal and orbital setae, all setae black: 2 pairs of frontal setae and 1 pair of orbital setae; lunule black. Ocellar triangle and vertex black. Face fulvous with two separate black spots (0.18 mm long) on antennal furrows. Scape (0.15 mm long) and pedicel (0.24 mm long) fulvous, first flagellomere (0.68 mm long) dark fuscous on outer side and apex, arista non plumose. Gena fulvous with a black marking and a seta. Occiput light fuscous, fulvous along eye margins; lateral and medial vertical setae present, occipital row with 7−8 stout black setae.

Thorax ( Figs 2, 4 ): 2.27 mm long, 1.86 mm wide; scutum red brown with black lanceolate markings. Pleura red brown in ground colour with black markings anterior to anepisternal stripe, katepisternum and anepimeron. Yellow markings as follows: postpronotal lobe, notopleuron, anepisternal stripe reaching midway between notopleuron and anterior notopleural seta and continuing to katepisternum as a transverse spot; anatergite (posterior apex black); anterior 3/5 of katatergite (remainder black); broad parallel-sided postsutural lateral vitta ending at intra-alar seta. Medial longitudinal postsutural yellow vitta absent. Scutellum yellow with narrow black basal band, subscutellum red-brown with black lateral margins. Chaetotaxy: scutellar seta, 1; prescutellar acrostichal seta, 1; intra-alar seta, 1; presutural supra-alar seta, 1; postalar seta, 1; anepisternal seta, 1; anterior notopleural seta, 1; posterior notopleural seta, 1; scapular setae, 2.

Leg ( Fig. 4 ): Coxa dark fuscous to black, trochanter light fuscous to fulvous; all femora fulvous with apical black markings; fore femur with small oval spot, apex of mid femur with faint infuscation; hind femur with prominent black apex. Fore and mid tibiae light fuscous, hind tibia dark fuscous, all tarsal segments fuscous.

Wing ( Figs 6–7 ): Length, 4.70 mm, cells bc and c hyaline; microtrichia in outer corner of cell c only; remainder of wing hyaline except dark fuscous cell sc, costal band broad, confluent with R4+5 and of uniform width to apex, extension of cell bcu shorter than cell bcu, base of cell br with microtrichia, anal streak narrow, confined to cell bcu, no dense aggregation of microtrichia around A1+Cu2; supernumerary lobe weak.

Abdomen ( Figs 3–5 ): 2.34 mm long, 2.19 mm wide, oval, tergites free, tergites I and II orange, tergite II with a medial black spot. Tergite III reddish brown with a narrow, basal transverse black band. Tergites III −V with a narrow medial longitudinal black band and small, triangular, fuscous lateral markings. Tergite V with shining spots (ceromata). Oviscape (1.58 mm) reddish brown; spicules (0.018−0.02 mm wide, 0.006 mm high) of eversible membrane (2.16 mm) broad, with 2−3 sharp projections of almost equal height ( Fig. 13 ), evenly spaced; aculeus (1.65 mm) curved apically, aculeus tip blunt, with four pairs of preapical setae (all of equal length) ( Fig. 12 ).

Male: As female except: short posterior lobe of surstylus and deep posterior emargination of sternite V. Pecten absent on tergite III ( Fig. 5 ). Proctiger membranous, as wide as epandrium, epandrium sclerotised ( Figs 8–9 ), as long as wide (0.3 mm); surstyli short, 0.17 mm long; posterior lobe of surstylus pointed and curved back, not longer than anterior lobe; aedeagus 2.60 mm long with glans of phallus ( Fig. 10 ) 0.4 mm long. Three-quarters of glans heavily sclerotized with well developed unpatterned acrophallus, praeputium and subapical lobe.

Host plant. Spondias pinnata Kurz. (Anacardiaceae) .

Material examined. Holotype ♀, INDIA, Andaman & Nicobar Islands, Mount Harriet, South Andaman, 25. vi. 1992, H. R. Ranganath; reared from Spondias pinnata (deposited in UASB); Paratypes, same data as holotype, 3 ♀♀, 2 ♂♂ ( UASB); 1 ♀, 1 ♂ ( NBAIR).

Etymology. The species is named after the type locality, Mount Harriet.

Remarks. Bactrocera (Calodacus) harrietensis is similar to B. (C.) symplocos and B. (C.) kuniyoshii (Shiraki) in having a broad costal band confluent with R4+5 and broad lateral postsutural vittae (> 0.15 mm). It can be differentiated from B. symplocos by its reddish brown scutum with black patches, abdomen with narrow, triangular, lateral markings on tergites III −V, shorter oviscape (1.58 mm) and broad spicules of eversible membrane with 3−5 projections, whereas in B. symplocos the scutum is black, the abdominal tergites have broad, black lateral margins, the oviscape is longer than 2 mm and the spicules of eversible membrane have 1−3 projections. Bactrocera harrietensis differs from B. kuniyoshii in having a reddish brown scutum, narrow fuscous markings on all femora, lack of dark lateral markings on tergites III −V, shorter oviscape (1.58 mm) and spicules of eversible membrane with 3−5 projections.

Figures

FIGURES 1 – 7. Bactrocera (Calodacus) harrietensis Ramani & David sp. nov.; 1, head; 2, scutum; 3, abdomen (female); 4, thorax (lateral view) and legs; 5, abdomen (male); 6, wing (female); 7, wing (male).

FIGURES 8 – 13. Bactrocera (Calodacus) harrietensis Ramani & David sp. nov.; 8, epandrium and surstyli (lateral view); 9, epandrium and surstyli (posterior view); 10, glans of phallus; 11, aculeus; 12, apex of aculeus; 13, spicules of eversible membrane.