Zeugodacus (Zeugodacus) tau (Walker)

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 : 131

Zeugodacus (Zeugodacus) tau (Walker)

Dasyneura tau Walker, 1849: 1074 .

Dacus hageni de Meijere, 1911: 375 .

Dacus caudatus var. nubilus Hendel, 1912 (synonymised by White & Wang, 1992: 278)

Dacus nubilus ssp. femoralis Hendel, 1934:11 .

Dacus (Zeugodacus) tau Hardy, 1977: 60 .

Bactrocera (Zeugodacus) tau (in Wang, 1996: 72) .

Dacus (Zeugodacus) elegantis Tseng, Chen & Chu, 1992: 61 (synonymised by Drew & Romig, 2013: 353)

Dacus (Zeugodacus) flavus Tseng, Chen & Chu, 1992:63 . (synoymised by Drew & Romig, 2013: 353)

Bactrocera (Zeugodacus) tau (Walker) (in Drew & Romig, 2013: 353) .

Zeugodacus (Zeugodacus) tau (Walker) (in Doorenweerd et al., 2018: 48) .

Material examined: 9♂♂, INDIA, Tripura, Agartala , 10.iii.2016, Sunil Joshi , 1♀, INDIA, Sikkim, Tadong, 26 Oct ̄ 3 Nov 2014, Sunil Joshi ( NBAIR) .

Diagnosis: Male with epandrium and surstyli distinctly bulb-shaped (posterior view) ( Fig. 6N ). Lateral surstylus longer than epandrium; posterior lobe of surstylus pointed, 9̄10 times longer than anterior lobe ( Fig. 4J ). Proctiger quadrate (when inflated) and smaller than epandrium. Medial surstylus longer than lateral surstylus tapering towards apex with a pair of thick prensisetae. Phallus 3.2 mm excluding glans (0.45 mm); 0.75 of glans sclerotised with entirely patterned praeputium (conical), subapical lobe and basal lobe present ( Fig. 10H ). Female with brown, dorsoventrally flattened oviscape (2.05 mm); spicules on distal end of eversible membrane (3.2 mm) with 10̄12 pointed projections (medial ones 3̄4 times higher than lateral ones) ( Fig. 12E ). Aculeus (2.4 mm long), tip pointed with 4 pairs of preapical setae, apical setae 10-12 times longer than basal ones ( Fig.14E ); two black, tightly coiled mulberry shaped spemathecae ( Fig. 15U ).

Figures

FIGURE 4. Epandrium and surstyli (lateral view) of tribe Dacini. (A) Z. (Parasinodacus) incisus; (B) B. (Parazeugodacus) bipustulata; (C) Z. (Zeugodacus) assamensis; (D) Z. (Z.) caudatus; (E) Z. (Z.) cucurbitae; (F) Z. (Z.) fuscoalatus; (G) Z. (Z.) gavisus; (H) Z. (Z.) havelockiae; (I) Z. (Z.) scutellaris; (J) Z. (Z.) tau; (K) Z. (Z.) watersi; (L) Z. (Z.) zahadi; (M) B. (Tetradacus) minax; (N) Dacus (Callantra) longicornis; (O) D. (Didacus) ciliatus; (P) D. (Leptoxyda) persicus; (Q) D. (Mellesis) crabroniformis; (R) D. (M.) discophorus; (S) D. (M.) ramanii; (T) D. (Neodacus) sphaeroidalis.

FIGURE 6. Epandrium and surstyli (posterior view) of Dacini. (A) Z. (J.) scutellarius; (B) Z. (J.) trilineatus; (C) Z. (Pd.) duplicatus; (D) Z. (Ps.) binoyi; (E) Z. (Parasinodacus) incisus; (F) B. (Parazeugodacus) bipustulata; (G) Z. (Zeugodacus) assamensis; (H) Z. (Z.) caudatus; (I) Z. (Z.) cucurbitae; (J) Z. (Z.) fuscoalatus; (K) Z. (Z.) gavisus; (L) Z. (Z.) havelockiae; (M) Z. (Z.) scutellaris; (N) Z. (Z.) tau;(O) Z. (Z.) watersi; (P) Z. (Z.) zahadi

FIGURE 10. Glans of phallus of Dacini. (A) Z. (Zeugodacus) assamensis; (B) Z. (Z.) caudatus; (C) B. (Z.) cucurbitae; (D) Z. (Z.) fuscoalatus; (E) Z. (Z.) gavisus; (F) Z. (Z.) havelockiae; (G) Z. (Z.) scutellaris; (H) Z.(Z.) tau; (I) Z. (Z.) watersi; (J) Z. (Z.) zahadi; (K) B. (Tetradacus) minax; (L) Dacus (Callantra) longicornis; (M) D. (Didacus) ciliatus; (N) D. (Leptoxyda) persicus; (O) D. (Mellesis) crabroniformis; (P) D. (M.) discophorus; (Q) D. (M.) ramanii; (R) D. (Neodacus) sphaeroidalis.

FIGURE 12. Spicules on distal end of eversible membrane of Dacini. (A) B. (Parazeugodacus) bipustulata; (B) Z. (Zeugodacus) cucurbitae; (C) Z. (Z.) fuscoalatus; (D) Z. (Z.) havelockiae; (E) Z. (Z.) tau; (F) Z. (Z.) watersi; (G) Z. (Z.) zahadi; (H) B. (Tetradacus) minax; (I) Dacus (Callantra) longicornis; (J) D. (Didacus) ciliatus; (K) D. (Leptoxyda) persicus; (L) D. (Mellesis) insulosus.

FIGURE 14. Aculeus tip of Dacini. (A) Bactrocera (Parazeugodacus) bipustulata; (B) Z. (Zeugodacus) cucurbitae; (C) Z. (Z.) fuscoalatus; (D) Z. (Z.) havelockiae; (E) Z. (Z.) tau; (F) Z. (Z.) watersi; (G) Z. (Z.) zahadi; (H) B. (Tetradacus) minax; (I) Dacus (Callantra) longicornis; (J) D. (Didacus) ciliatus; (K) D. (Leptoxyda) persicus; (L) D. (Mellesis) insulosus.

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.