Bactrocera (Bactrocera) digressa Radhakrishnan, 2013

David, K. J. & Ramani, S., 2019, New species, redescriptions and phylogenetic revision of tribe Dacini (Diptera: Tephritidae: Dacinae) from India based on morphological characters, Zootaxa 4551 (2), pp. 101-146 : 118

Bactrocera (Bactrocera) digressa Radhakrishnan

Bactrocera (Bactrocera) digressa Radhakrishnan, 1999: 1 .

Bactrocera (Daculus) yercaudiae Drew (in Drew & Raghu, 2002) 2002: 346 . (synonymised by David & Ramani, 2011). Bactrocera (Daculus) digressa Radhakrishnan (in Drew & Romig, 2013: 199) .

Bactrocera (Bactrocera) digressa Radhakrishnan (in Hancock, 2015: 42) .

Material examined: 5♀♀, INDIA, Karnataka, Gowribidanur, Kolar , 23.vii. 2007, Naveen Kumar, V ., 1♂, INDIA, Karnataka, Bangalore, Attur farm, 18.ii.2013, David, K. J ., 1♂, INDIA, Karnataka, Bangalore, Hebbal , 13.ii.2013, David, K. J ., 1♂, INDIA, Karnataka, Bangalore, Hebbal , 30.xi.2012, David, K. J. ( NBAIR) .

Diagnosis: Male with epandrium and surstyli oval in outline (posterior view) ( Fig. 5H ), Lateral surstylus shorter than epandrium; posterior lobe of surstylus blunt (in profile view), curved in, as long as anterior lobe ( Fig. 3H ). Proctiger membranous, quadrate and smaller than epandrium ( Fig. 3H ). Medial surstylus, longer than lateral surstylus with a pair of thick prensisetae ( Fig. 5H ). Phallus 3.5 mm long, excluding glans (0.4 mm); 0.75 of glans sclerotised with unpatterned praeputium; subapical lobe and basal lobe present ( Fig. 8H ). Female with reddishbrown, dorsoventrally flattened oviscape (1.05 mm); eversible membrane (1.06 mm) with spicules on distal end having 1̄3 sharp projections ( Fig. 11F ); aculeus short (0.9 mm) with bifid apex and four pairs of preapical setae ( Fig. 13F ); two black convoluted berry shaped spermathecae ( Fig. 15E ).

Figures

FIGURE 3. Epandrium, surstyli and proctiger of Dacini. (A) B. (B.) affinis; (B) B. (B.) apiconigroscutella; (C) B. (B.) blairiae; (D) B. (B.) carambolae; (E) B. (B.) caryeae; (F) B. (B.) correcta; (G) B. (B.) dorsalis; (H) B. (B.) digressa; (I) B. (B.) fastigata; (J) B. (B.) latifrons; (K) B. (B.) limbifera; (L) B. (B.) melastomatos; (M) B. (B.) nigrofemoralis; (N) B. (B.) paraosbeckiae; (O) B. (B.) ranganathi; (P) B. (B.) verbascifoliae; (Q) B. (B.) versicolor; (R) B. (B.) vishnu; (S) B. (B.) zonata; (T) Zeugodacus (H.) diversus; (U) Z. (J.) scutellarius; (V) Z. (J.) trilineatus; (W) Z. (Pd.) duplicatus; (X) Z. (Ps.) binoyi.

FIGURE 5. Epandrium and surstyli (posterior view) of Bactrocera Macquart. (A) B. (B.) affinis;(B) B. (B.) apiconigroscutella; (C) B. (B.) blairiae; (D) B. (B.) carambolae; (E) B. (B.) caryeae; (F) B. (B.) correcta; (G) B. (B.) dorsalis; (H) B. (B.) digressa; (I) B. (B.) fastigata; (J) B. (B.) latifrons; (K) B. (B.) limbifera; (L) B. (B.) melastomatos; (M) B. (B.) nigrofemoralis; (N) B. (B.) paraosbeckiae; (O) B. (B.) ranganathi; (P) B. (B.) verbascifoliae; (Q) B. (B.) versicolor; (R) B. (B.) vishnu; (S) B. (B.) zonata; (T) Z. (H.) diversus.

FIGURE 8. Glans of phallus of Bactrocera. (A) B.(B.) affinis; (B) B.(B.) apiconigroscutella; (C) B.(B.) blairiae; (D) B.(B.) carambolae; (E) B. (B.) caryeae; (F) B. (B.) correcta; (G) B.(B.) dorsalis; (H) B.(B.) digressa; (I) B.(B.) fastigata; (J) B.(B.) latifrons; (K) B.(B.) limbifera; (L) B. (B.) melastomatos.

FIGURE 11. Spicules on distal end of eversible membrane of Dacini. (A) B. (B.) albistrigata; (B) B.(B.) blairiae; (C) B. (B.) caryeae; (D) B. (B.) correcta; (E) B. (B.) dorsalis; (F) B. (B.) digressa; (G) B. (B.) latifrons; (H) B. (B.) nigrofemoralis; (I) B. (B.) zonata; (J) B. (Bulladacus) cinnabaria; (K) Zeugodacus (Hemigymnodacus) diversus; (L) Z. (Javadacus) trilineatus.

FIGURE 13. Aculeus tip of Bactrocera. (A) B. (B.) albistrigata; (B) B. (B.) blairiae; (C) B. (B.) caryeae; (D) B. (B.) correcta; (E) B. (B.) dorsalis; (F) B. (B.) digressa; (G) B. (B.) latifrons; (H) B. (B.) nigrofemoralis; (I) B. (B.) zonata; (J) B. (Bulladacus) cinnabaria; (K) Zeugodacus (Hemigymnodacus) diversus; (L) Z. (Javadacus) trilineatus.

FIGURE 15. Spermatheca of Dacini. (A) Bactrocera (B.) albistrigata; (B) B. (B.) blairiae; (C) B.(B.) caryeae; (D) B. (B.) correcta (E) B. (B.) digressa (F) B. (B.) dorsalis; (G) B. (B.) latifrons; (H) B. (B.) nigrofemoralis; (I) B. (B.) syzygii; (J) B. (B.) zonata; (K) B. (Bulladacus) cinnabaria; (L) B. (Parazeugodacus) bipustulata; (M) D. (Callantra) longicornis; (N) Dacus (Didacus) ciliatus; (O) Dacus (Leptoxyda) persicus; (P) Zeugodacus (H.) diversus; (Q) Z. (J.) trilineatus; (R) Z. (Z.) cucurbitae; (S) Z. (Z.) fuscoalatus; (T) Z. (Z.) havelockiae; (U) Z. (Z.) tau; (V) Z. (Z.) watersi; (W) Z. (Z.) zahadi.