Three new species of Rhaphium Meigen, 1803 from mangroves in Hong Kong (Diptera: Dolichopodidae: Rhaphiinae)

  • Patrick Grootaert Royal Belgian Institute of Natural Sciences, Vautierstraat 29, 1000 Brussels
  • Christopher Taylor School of Biological Sciences & The University of Hong Kong, Kadoorie Biological Sciences Building Pokfulam Road, Hong Kong
  • Benoit Guénard School of Biological Sciences & The University of Hong Kong, Kadoorie Biological Sciences Building Pokfulam Road, Hong Kong
Keywords: Rhaphium new species, mangrove, Hong Kong


The genus Rhaphium Meigen, 1803 is recorded for the first time from mangroves in Hong Kong. Three species are described as new to science: Rhaphium hongkongense sp. nov. and Rhaphium spinulatum sp. nov., both tentatively belonging to the Rhaphium crassipes group sensu Negrobov & Grichanov (2010), and Rhaphium canniccii sp. nov. assigned to a new species group, the Rhaphium micans group. The status of Rhaphium mediocre (Becker, 1922) described from Taiwan and Rhaphium eburnea (Parent, 1926) from Shanghai is discussed. NGS barcodes for the new species are provided.


Becker T. 1922. Dipterologische Studien. Dolichopodidae der indo-australischen Region. Capita Zoologica 1 (4): 1–247.

Brecko J., Mathys A., Dekoninck W., Leponce M., VandenSpiegel D. & Semal P. 2014. Focus stacking: comparing commercial top-end set-ups with a semi-automatic low budget approach. A possible solution for mass digitization of type specimens. Zookeys 464: 1–23.

Grootaert P. 2006. The genus Teuchophorus (Diptera, Dolichopodidae) in Singapore. Raffles Bulletin of Zoology 54: 59–82.

Grootaert P. 2009. Oriental Diptera, a challenge in diversity and taxonomy. In: Papp T., Bickel D. & Meier R. (eds) Diptera Diversity: Status, Challenges and Tools: 197–226. Koninklijke Brill N.V., Leiden.

Grootaert P. & Puniamoorthy J. 2014. Revision of Ngirhaphium (Insecta: Diptera: Dolichopodidae), with the description of two new species from Singapore’s mangroves. Raffles Bulletin of Zoology 62: 146–160.

Hong Kong Observatory. 2017. Daily Extract for 2017. Available from [accessed 6 Nov. 2018].

Meier R., Wong W., Srivathsan A. & Foo M. 2016. $1 DNA barcodes for reconstructing complex phenomes and finding rare species in specimen-rich samples. Cladistics 32: 100–110.

Naglis S. 2009. Some taxonomical changes in the genus Rhaphium (Diptera, Dolichopodidae), with a key to the Rhaphium albifrons species group. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 82: 201–203.

Naglis S. & Grootaert P. 2011. A remarkable new species of Rhaphium Meigen (Diptera, Dolichopodidae) from Sri Lanka. Zootaxa 2991: 44–48.

Negrobov O.P. 1979. Dolichopodidae. In: Lindner E. (ed.) Die Fliegen der Palaearktischen Region. Lieferung 322: 475–530, pls 189–207. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart.

Negrobov O.P. & Grichanov I.Y. 2010. The Rhaphium crassipes species group in the Palearctic Region with the description of a new species from Uzbekistan (Diptera: Dolichopodidae). Caucasian Entomological Bulletin 6 (1): 117–122.

Parent O. 1926. Dolichopodidés nouveaux de l’extrême orient paléarctique. In: Encyclopédie entomo-logique. Serie B. II. Diptera. Vol. 3: 111–149. Paris.

Qilemoge, Wang M. & Yang D. 2019. Three new species of Rhaphium from China, with an updated key to Chinese Rhaphium (Diptera, Dolichopodidae, Rhaphiinae). ZooKeys 840: 87–99.

Ramos K. & Grootaert P. 2018. Description of a new mangrove Hercostomus (Diptera: Dolichopodidae: Dolichopodinae) from Bohol, Philippines. Tropical Natural History 18 (1): 24–31.

Tam N.F.Y. & Wong Y.S. 2002. Conservation and sustainable exploitation of mangroves in Hong Kong. Trees 16: 224–229.

Tang C., Wang N. & Yang D. 2016. Rhaphium (Diptera: Dolichopodidae: Rhaphiinae) from China with six new species. Zootaxa 4162 (3): 581–593.

Yang D., Zhang L., Wang M. & Zhu Y. 2011. Diptera Dolichopodidae, Rhaphiinae Bigot, 1852. Fauna Sinica Insecta. Vol. 53: 1241–1273. Science Press, Beijing.

Yang D., Zhu Y.J., Wang M. & Zhang L. 2006. World Catalog of Dolichopodidae (Insecta: Diptera). China Agricultural University Press, Beijing.

Zhang L., Yang D. & Grootaert P. 2007. Paraclius (Diptera: Dolichopodidae: Dolichopodinae) of Singapore, with new species from mangroves. Raffles Bulletin of Zoology 55: 49–62.

Zhang L., Yang D. & Grootaert P. 2008. Mangrove Hercostomus sensu lato (Diptera: Dolichopodidae) of Singapore. Raffles Bulletin of Zoology 56: 17–28.

How to Cite
Grootaert, P., Taylor, C., & Guénard, B. (2019). Three new species of Rhaphium Meigen, 1803 from mangroves in Hong Kong (Diptera: Dolichopodidae: Rhaphiinae). European Journal of Taxonomy, (540).