Simosyrphus grandicornis ( Macquart, 1842 )

Ramage, Thibault, Charlat, Sylvain & Mengual, Ximo, 2018, Flower flies (Diptera, Syrphidae) of French Polynesia, with the description of two new species, European Journal of Taxonomy 448, pp. 1-37 : 22-24

publication ID	https://doi.org/10.5852/ejt.2018.448
publication LSID	lsid:zoobank.org:pub:413AE92E-862A-4879-B72F-1C0DCF1F7240
DOI	https://doi.org/10.5281/zenodo.3815673
persistent identifier	https://treatment.plazi.org/id/FA02BC3C-C970-FFAF-955A-FB474B250492
treatment provided by	Valdenar (2020-05-07 18:38:13, last updated 2025-03-06 15:17:33)
scientific name	Simosyrphus grandicornis ( Macquart, 1842 )
status

Treatment

Simosyrphus grandicornis ( Macquart, 1842) View in CoL

Figs 5F, I View Fig , 6B View Fig

Syrphus grandicornis Macquart, 1842: 96 View in CoL

( holotype: ♂, MNHN; type locality: Australia, Sydney, Port Jackson ).

Syrphus sydneyensis Macquart, 1846: 263 View in CoL .

Syrphus pusilla Macquart, 1847: 77 .

Syrphus melanurus Bigot, 1884: 97 View in CoL .

Syrphus obesus Hutton, 1901: 41 View in CoL .

Syrphus vitiensis Bezzi, 1928: 71 View in CoL .

Ischiodon scutellaris Bryan, 1934: 412 View in CoL .

Metasyrphus fasciatus Shiraki, 1963: 186 View in CoL .

Syrphus australiensis Van der Goot, 1964: 220 View in CoL .

Syrphus huttoni Van der Goot, 1964: 220 View in CoL .

Differential diagnosis

Simosyrphus grandicornis has often been confused with species of Ischiodon , especially I. scutellaris , as they are sympatric and the males of both species have large genitalia. The morphological characteristics to distinguish S. grandicornis are the broadly rounded basoflagellomere (subacute apically in I. scutellaris ), black katepisternum ( Fig. 5F View Fig ) (with a dorsal yellow marking in I. scutellaris ; Fig. 3G View Fig ), simple male metatrochanter ( Fig. 6B View Fig ) (with a spine-like process in I. scutellaris , Fig. 6A View Fig ) and black metafemur, yellow on the apical fourth (mostly yellow, black only subapically in I. scutellaris ).

Material examined

Not collected or studied from French Polynesia, but Nishida (2008) reported it from the Society Islands. We believe that Nishida’s records might be a misidentification of I. scutellaris .

Geographical distribution

Very common Australasian species, found throughout Oceania (from New Caledonia and Fiji to Hawaii), New Zealand and Australia (all states). Simosyrphus grandicornis is absent from the island of New Guinea.

Status in French Polynesia

Unknown.

Flowers visited

No records.

References

Nishida 2008 (list).

Remarks

Among the material examined there were no individuals of this species from French Polynesia; thus, we believe that S. grandicornis is not present in the archipelago. Mengual (2015) stated that the dispersal of this species into many of the occupied Oceanic islands in its range was due to human activities, probably introduced by the early Polynesians who might have brought them in as larvae on fruits and plants they were transporting. Because it is plausible that S. grandicornis will reach the islands of French Polynesia in the near future, we have included this species in the identification key (indicated with an asterisk *).

References

Bezzi M. 1928. Diptera Brachycera and Athericera of the Fiji Islands based on Material in the British Museum (Natural History). Trustees of the British Museum, London.

Bigot J. M. F. 1884. Dipteres nouveaux ou peu connus. 24 e partie (1), XXXII: Syrphidi (2 e partie). Especes nouvelles, No III (2). Annales de la Societe entomologique de France, serie 6, 4: 73 - 80, 81 - 116.

Bryan Jr. E. H. 1934. A review of the Hawaiian Diptera, with descriptions of new species. Proceedings of the Hawaiian Entomological Society 8: 399 - 468.

Fabricius J. C. 1805. Systema Antliatorum: secundum Ordines, Genera, Species adiectis Synonymis, Locis, Observationibus, Descriptionibus. Carolus Reichard, Brunsvigae [= Braunschweig, Germany].

Hutton F. W. 1901. Synopsis of the Diptera Brachyera of New Zealand. Transactions and Proceedings of the Royal Society of New Zealand 33: 1 - 95.

Macquart P. J. M. 1842. Dipteres exotiques nouveaux ou peu connus. Tome deuxieme, 2 e partie. Memoires de la Societe royale des Sciences, de l'Agriculture et des Arts de Lille 1: 65 - 200.

Macquart P. J. M. 1846. Dipteres exotiques nouveaux ou peu connus. Supplement [1]. Memoires de la Societe royale des Sciences, de l'Agriculture et des Arts a Lille 1844: 133 - 364.

Macquart P. J. M. 1847. Dipteres exotiques nouveaux ou peu connus. Supplement [2]. Memoires de la Societe royale des Sciences, de l'Agriculture et des Arts a Lille 1846: 21 - 120.

Mengual X. 2015. Simosyrphus grandicornis (common hover fly). Invasive Species Compendium. The Centre for Agriculture and Bioscience International (CABI). Available from http://www.cabi.org/isc/datasheet/50061 [accessed 27 Apr. 2017].

Nishida G. M. 2008. French Polynesia Diptera Checklist.

Shiraki T. 1963. Diptera: Syrphidae. Insects of Micronesia 13: 129 - 187.

Van der Goot V. S. 1964. Fluke's catalogue of Neotropical Syrphidae (Insects, Diptera), a critical study with an appendix on new names in Syrphidae. Beaufortia 10: 212 - 221.

Figures

Fig. 5. A. Palpada vinetorum (Fabricius, 1798), ♀ (ZFMK-DIP-00019738), lateral view. B, E. Syritta oceanica (Macquart, 1855), ♀ (ZFMK-DIP-00019724). B. Lateral view. E. Detail of wing and abdomen. C–D, H. Syritta aenigmatopatria Hardy, 1964, ♀ (ZFMK-DIP-00019739). C. Wing and metaleg. D. Lateral view. H. Dorsal view. F, I. Simosyrphus grandicornis (Macquart, 1842), ♂ (ZFMK- DIP-00019736). F. Lateral view. I. Dorsal view. G. Syritta aenigmatopatria Hardy, 1964, ♂ (ZFMK- DIP-00019746), dorsal view. Scale bars = 1 mm.

Fig. 6. A. Ischiodon scutellaris (Fabricius, 1805), ♂ (ZFMK-DIP-00019713), metacoxa and metatrochanter. Arrow indicates the ventral spine-like process. B. Simosyrphus grandicornis (Macquart, 1842), ♂ (ZFMK-DIP-00019736), metacoxa and metatrochanter. C–E. Allograpta jacqui Mengual & Ramage sp. nov., holotype ♂ (ZFMK-DIP-00026906). C. Lateral view. D. Dorsal view. E. Frontal view. F–G. Melanostoma polynesiotes Mengual & Ramage sp. nov., paratype, ♂ (ZFMK-DIP-00026902). F. Dorsolateral view. G. Lateral view. Scale bars = 0.5 mm.

Fig. 3. A–B. Allograpta amphotera (Bezzi, 1928), holotype, ♂. A. Lateral view. B. Frontal view. C–D. Allograpta jacqui Mengual & Ramage sp. nov., holotype, ♂, (ZFMK-DIP-00026906). C. Lateral view. D. Frontal view. E–F. A. nigripilosa (Hull, 1944), ♂ (photographs by F. Jacq). E. Lateral view. F. Frontal view. G–H. Ischiodon scutellaris (Fabricius, 1805), ♂ (ZFMK-DIP-00019713). G. Lateral view. H. Frontal view. Scale bars = 1 mm.