Abstract
A taxonomic review of the marine littoral genus Iotarphia Cameron is presented. Three species are recognized, one of which is described as a new species (I. magna Song & Ahn, sp. n.) based on morphological and molecular characters. Genetic divergence of COI using uncorrected p-distance among Iotarphia species ranged from 10% to 11.6%, while intraspecific divergence ranged from 0% to 1.3%. All three species were strongly supported as a single lineage on both neighbor-joining and parsimony trees. The genus Iotarphia and I. australis Cameron are redescribed with illustrations of diagnostic characters. The female of I. rufobrunnea is characterized for the first time. A key and comparison table for similarities and differences among the species are presented.
References
Ashe, J.S. (1984) Generic revision of the subtribe Gyrophaenina (Coleoptera: Staphylinidae: Aleocharinae) with a review of the described subgenera and major features of evolution. Quaestiones Entomologicae, 20, 129–349.
Ashe, J.S. (2001) Aleocharinae, Staphylinidae Latreille, 1802. In: Newton, A.F., Thayer, M.K., Ashe, J.S. & Chandler, D.S. (Eds.), American Beetles. Vol. 1. Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia. CRC Press, Boca Raton, Florida, pp. 295–324 + 358–375 + 397–418.
Cameron, M. (1943) New species of Staphylinidae (Col.) from Australia and New Guinea. The Annals and Magazine of Natural History, Series 11, 10, 336–354.
https://doi.org/10.1080/03745481.1943.9728021
Folmer, O., Hoeh, W., Black, M. & Vrijenhoek, R. (1994) Conserved primers for PCR amplification of mitochondrial DNA from different invertebrate phyla. Molecular Marine Biology and Biotechnology, 3, 294–299.
Frank, J.H. & Ahn, K.-J. (2011) Coastal Staphylinidae (Coleoptera): A worldwide checklist, biogeography and natural history. ZooKeys, 107, 1–98.
https://doi.org/10.3897/zookeys.107.1651
Goloboff, P.A. & Catalano, S.A. (2016) TNT version 1.5, including a full implementation of phylogenetic morphometrics. Cladistics, 32, 221–238.
https://doi.org/10.1111/cla.12160
Hanley, R.S. & Ashe, J.S. (2003) Techniques for dissecting adult aleocharine beetles (Coleoptera: Staphylinidae). Bulletin of Entomological Research, 93, 11–18.
https://doi.org/10.1079/BER2002210
Kimura, M. (1980) A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. Journal of Molecular Evolution, 16, 111–120.
https://doi.org/10.1007/BF01731581
Kumar, S., Stecher, G. & Tamura, K. (2016) MEGA7: molecular evolutionary genetics analysis version 7.0 for bigger datasets. Molecular Biology and Evolution, 33, 1870–1874.
https://doi.org/10.1093/molbev/msw054
Lee, S.-G., Osborn, A.W. & Ahn, K.-J. (2016) A new species of Iotarphia Cameron (Coleoptera, Staphylinidae, Aleocharinae) from Tasmanian seacoasts, Australia. ZooKeys, 632, 67–74.
https://doi.org/10.3897/zookeys.632.10657
Lee, S.-G. & Ahn, K.-J. (2015). Psammopora Pace, a new synonym of Iotarphia Cameron (Coleoptera: Staphylinidae: Aleocharinae). The Coleopterists Bulletin, 69, 766–767.
https://doi.org/10.1649/0010-065X-69.4.766
Osswald, J., Bachmann, L. & Gusarov, V.I. (2013) Molecular phylogeny of the beetle tribe Oxypodini (Coleoptera: Staphylinidae: Aleocharinae). Systematic Entomology, 38, 507–522.
https://doi.org/10.1111/syen.12011
Pace, R. (2003) New or little known Aleocharinae from the Australian region (Coleoptera, Staphylinidae). Monografie del Museo regionale di Scienze naturali di Torino, 35, 111–186.
Sawada, K. (1972) Methodological Research in the Taxonomy of Aleocharinae. Contributions from the Biological Laboratory, Kyoto University, 24, 31–59.
Song, J.-H. & Ahn, K.-J. (2014) Species delimitation in the Aleochara fucicola species complex (Coleoptera: Staphylinidae: Aleocharinae) and its phylogenetic relationships. Zoologica Scripta, 43, 629–640.
https://doi.org/10.1111/zsc.12077
Song, J.-H., & Ahn, K.-J. (2018) Species trees, temporal divergence and historical biogeography of coastal rove beetles (Coleoptera: Staphylinidae) reveal their early Miocene origin and show that most divergence events occurred in the early Pliocene along the Pacific coasts. Cladistics, 34, 313–332.
https://doi.org/10.1111/cla.12206
Song, J.-H., Yoo, I.-S., Ôhara, M. & Ahn, K.-J. (2018) Discovery of two new Diaulota Casey species (Coleoptera: Staphylinidae: Aleocharinae) from coastal Hokkaido, Japan based on morphological and molecular characters. Journal of Asia-Pacific Entomology, 21, 930–936.
https://doi.org/10.1016/j.aspen.2018.07.002
Song, J.-H., Lee, S.-G., Lee, J.-S. & Ahn, K.-J. (2019a) Independent origins of coastal colonization in the tribe Athetini (Coleoptera, Staphylinidae). Zoologica Scripta, 48, 337–348.
https://doi.org/10.1111/zsc.12351
Song, J.-H., Osborn, A.W., Elgueta, M. & Ahn, K.-J. (2019b) Phylogenetic placement and redescription of Aleochara blackburni Bernhauer & Scheerpeltz, 1926 (Coleoptera: Staphylinidae) from coastal Australia. Austral Entomology, 58, 76–84. https://doi.org/10.1111/aen.12310
Srivathsan, A. & Meier, R. (2012) On the inappropriate use of Kimura-2-parameter (K2P) divergences in the DNA-barcoding literature. Cladistics, 28, 190–194.
https://doi.org/10.1111/j.1096-0031.2011.00370.x