Javadacus Hardy

Singh, Maneesh Pal & Hancock, David Lawrence, 2025, Two new species of genus Bactrocera Macquart (Diptera: Tephritidae: Dacinae: Dacini) from northern Himalayas and new records of host plants, distribution or variation in three other species in India, Zootaxa 5666 (2), pp. 175-194 : 192

Key to species of subgenus Javadacus Hardy from India

1. Scutellum yellow, without an apical dark spot or band........................................................ 2

- Scutellum with an apical dark spot or band................................................................. 7

2. Wing with a broad infuscation along dm-cu crossvein; scutum reddish brown................... B. cucurbitae (Coquillett)

- Wing without a broad infuscation along dm-cu crossvein; scutum often extensively black............................ 3

3. Face fulvous yellow without black spots.................................................... B. trilineata (Hardy)

- Face fulvous yellow with two oval or round black spots....................................................... 4

4. Prescutellar acrostichal setae absent; scutum without black markings; postsutural lateral yellow vittae ending before intra-alar setae and narrowing posteriorly; all abdominal sternites dark........................... B. havelockiae Drew & Romig

- Prescutellar acrostichal setae present; scutum with extensive black markings between lateral and medial vittae; postsutural lateral yellow vittae often enclosing intra-alar setae; abdominal sternites dark except sternite II pale.................... 5

5. Postsutural lateral yellow vittae not reaching intra-alar setae and distinctly narrowing posteriorly; male wing with supernumerary lobe moderately developed and rounded........................................ B. trivandrumensis Drew & Romig

- Postsutural lateral yellow vittae enclosing intra-alar setae and not distinctly narrowing posteriorly; male wing with supernumerary lobe strong and keel-shaped............................................................................. 6

6. Costal band confluent with vein R 2+3 [Note: some specimens of B. signata might key here but differ in the black scutal markings not reaching medial yellow vitta].......................................................... B. zahadi Mahmood

- Costal band overlapping vein R 2+3 .............................................................. B. tau (Walker)

7. Scutum largely or almost entirely black; scutellum with narrow apical black spot between or just overlapping apical scutellar setae; aculeus needle-shaped............................................................................ 8

- Scutum largely or almost entirely red-brown; scutellum yellow with broad apical black or red-brown band distinctly overlapping apical scutellar setae; aculeus apically trilobed.............................................................. 9

8. Scutum black; legs extensively black in apical half to two-thirds; abdominal tergite III entirely black; scutellum with apical black spot enlarged medially; costal band not expanded into an apical spot........................ B. scutellaria (Bezzi)

- Scutum red-brown with large black markings; legs not extensively black in apical half to two-thirds; abdominal tergite III red-brown with narrow anterior black band and medial vitta; scutellum with narrow apical black spot not enlarged medially; costal band expanded into a broadly rounded apical spot............................................. B. signata (Hering)

9. Face with two pear-shaped black spots; postsutural medial vitta narrow anteriorly and broadened posteriorly; apical black band on scutellum about one-third length of scutellum; apical black spot on wing broad, reaching vein M and almost covering apex of cell r 4+5, cells dm (partly), m and cu 1 infuscated...................................... B. fuscoalata Drew & Romig

- Face with two elongateor teardrop-shaped black spots; postsutural medial vitta spindle-shaped, not distinctly broader posteriorly than anteriorly; apical black band on scutellum at least half length of scutellum; apical black spot on wing rounded and not reaching either vein M or apex of cell r 4+5 except anteriorly, cells dm, m and cu 1 hyaline............................ 10

10. Facial spots narrow and elongate; postpronotal lobes pale fuscous; prescutellar acrostichal setae absent; abdominal tergites IV & V with fuscous anterolateral corners; oviscape longer than tergites IV+V combined................. B. watersi (Hardy)

- Facial spots teardrop-shaped; postpronotal lobes yellow; prescutellar acrostichal setae present; abdominal tergites IV & V broadly fuscous laterally; oviscape about as long as tergite V.................. B. barakzaii Maneesh & Hancock , sp. nov.