Dacus Hendel
| Main Authors: | David, K. J., Sachin, K., Hancock, D. L. |
|---|---|
| Format: | info publication-taxonomictreatment eJournal |
| Terbitan: |
, 2020
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3691425 |
Daftar Isi:
- Key to species of Dacus Hendel from India, Bhutan and Sri Lanka 1. Wing with costal band expanded into a broad apical patch that includes most of cell m; abdomen without a black medial vitta on tergites II–IV.......................................................... D. (Neodacus) sphaeroidalis (Bezzi) - Wing with apical expansion smaller, if broadly rounded and entering cell m anteriorly then abdomen with a broad black medial vitta on tergites II–IV...................................................................................2 2. Combined length of antennal segments shorter than height of head; costal cells bc and c colourless; if scutum black then either a postsutural medial yellow scutal vitta present or costal band narrow and interrupted subapically; abdomen with tergite I (basal part of combined syntergite I+II) distinctly broader than long....................................................3 - Combined length of antennal segments longer than height of head; costal cells bc and c often fuscous, if colourless then scutum black, postsutural medial yellow scutal vitta absent and costal band not interrupted subapically; abdomen with tergite I (basal part of combined syntergite I+II) quadrate or petiolate......................................................... 5 3. Scutum black with a postsutural medial yellow vitta, costal band pale and indistinct; male without a pecten of cilia on tergite III; female with oviscape much longer than tergite V and bulbous....................... D. (Leptoxyda) persicus Hendel - Scutum reddish brown to black without a postsutural medial yellow vitta, costal band narrow but fuscous and distinct; male with a pecten of cilia on posterolateral margin of tergite III; female with oviscape much shorter than tergite V and dorsoventrally flattened........................................................................................4 4. Scutum black with red-brown markings; costal band interrupted subapically; abdomen largely black and with a medial black vitta [Sri Lanka]................................................................ D. (Didacus) kaiseri (Hering) - Scutum reddish brown; costal band not interrupted subapically; abdomen red-brown with at most a pair of submedial fuscous spots on tergite III................................................................ D. (Didacus) ciliatus Loew 5. Wing with pale anal streak in cell bcu extension; scutum and abdomen red-brown without black abdominal medial vitta; breeds on plants belonging to Cucurbitaceae..................................... D. (Callantra) longicornis (Wiedemann) - Wing without anal streak; scutum and abdomen red-brown to black with or without black abdominal medial vitta; breeds on plants belonging to Asclepiadaceae.........................................................................6 6. Costal cells bc and c fuscous; scutum red-brown or mostly black; face largely black or fulvous to fuscous with black spots either separate or united to form an inverted U-shaped pattern....................................................... 7 - Costal cells bc and c colourless; scutum black, face largely black or with two large black spots connected by a broad band above oral margin......................................................................................... 17 7. Scutum with medial and lateral postsutural yellow vittae........................ D. (Mellesis) icariiformis (Enderlein) - Scutum without lateral postsutural yellow vittae, medial vitta present or absent.....................................8 8. Medial postsutural yellow vitta often present; wing with a broad costal band confluent with vein R 4+5, expanded into a large apical spot that enters cell m..................................................... D. (M.) discophorus (Hering) - Medial postsutural yellow vitta absent; wing with a broad costal band overlapping vein R 4+5, often expanded slightly towards apex but not entering cell m..............................................................................9 9. Fore femur with 2–3 subapical ventral black spines; costal band with apical patch distinctly darker than remainder; abdomen strongly petiolate, tergite I about twice as long as wide; postsutural supra-alar seta absent................................................................................................... D. (M.) polistiformis (Senior-White) - Fore femur without subapical spines; costal band with apical patch not distinctly darker than remainder; abdomen often not strongly petiolate; postsutural supra-alar seta usually present.................................................. 10 10. Postpronotal lobe yellow to reddish brown; scutum reddish brown, with or without fuscous markings...................11 - Postpronotal lobe dark fuscous to black; scutum black with or without red-brown patches posteriorly...................15 11. Wing cell br entirely hyaline in basal three-quarters beyond level of DM-Cu crossvein; abdomen with a narrow medial black vitta on tergites III–V [Bhutan].......................................................... D. (M.) feijeni White - Wing cell br fuscous in at least anterior half; abdomen without a narrow medial black vitta.......................... 12 12. Abdomen with tergite I quadrate; cell br almost entirely fuscous........... D. (M.) viraktamathi David & Hancock, sp. n. - Abdomen petiolate with tergite I distinctly longer than broad; cell br fuscous only on anterior half.................... 13 13. Postpronotal lobe yellow; scutum and abdomen without fuscous markings; anatergite almost entirely yellow [Andaman Is]......................................................................... D. (M.) insulosus Drew & Hancock - Postpronotal lobe dark fulvous or reddish brown; scutum and abdomen with fuscous markings; anatergite yellow at most on ventral quarter...................................................................................... 14 14. Postpronotal lobe dark fulvous; anatergite dark fulvous with ventral quarter yellow; scutellum with a narrow dark basal band; fore, mid and most of hind femora orange-brown [Sri Lanka]................ D. (M.) ancoralis Leblanc & Doorenweerd - Postpronotal lobe reddish brown; anatergite entirely dark brown; scutellum with a broad dark basal band; all femora fuscous with orange-brown apices................................................. D. (M.) jacobi David & Sachin, sp. n. 15. Wing cell br entirely fuscous; abdominal tergites II and III with large posteromedial orange-brown patches [Bhutan]......................................................................................... D. (M.) fletcheri Drew - Wing cell br fuscous only in anterior half; abdominal tergites II and III without large posteromedial orange-brown patches..16 16. Abdomen petiolate with tergite I distinctly longer than broad and tergites III–IV entirely black [Bhutan]......................................................................................... D. (M.) siamensis Drew & Hancock - Abdomen with tergite I quadrate and tergites III-IV with large posteromedial patches [Bhutan]...................................................................................................... D. (M.) dorji Drew & Romig 17. Wing with a broad costal band that expands over R-M crossvein, anepisternal stripe broad, reaching postpronotal lobe.............................................................................. D. (M.) ramanii Drew & Hancock - Wing with broad costal band confluent with vein R 4+5, overlapping towards apex but without an extension over R-M crossvein; anepisternal stripe narrow, barely wider than notopleural lobe...................................................18 18. Abdomen entirely black; anatergite wholly black.................................... D. (M.) crabroniformis (Bezzi) - Abdominal tergites IV–V with submedial reddish brown patches separated by a medial black vitta; anatergite partly yellow................................................................................ D. (M.) maculipterus White
- Published as part of David, K. J., Sachin, K. & Hancock, D. L., 2020, Two New Species And A New Record Of Dacus Fabricius (Diptera: Tephritidae) From India, pp. 553-560 in Zootaxa 4743 (4) on pages 554-555, DOI: 10.11646/zootaxa.4743.4.5, http://zenodo.org/record/3690637