Abstract
A new genus and two new amber fossil species of Leiodidae are described: Catops perkovskyi sp. n. (CholevinaeCholevini) and Tafforeus cainosternus gen. n., sp. n. (Leiodinae Pseudoliodini); using virtual dissection by propagationphase contrast synchrotron X-ray microtomography, which allows for visualization of the genital structures in a non-invasive way. The external and internal morphology of the new species is compared to that of the extant related species.Putative evolutionary relationship between Tafforeus and the genus Cainosternum Notman, 1921, and their placement in the tribe Pseudoliodini are discussed.References
Horn, G.H. (1880) Synopsis of the Silphidae of the United States with reference to the genera of other countries. Transactions of the American Entomological Society, 8, 219–322.
Jeannel, R. (1936) Monographie des Catopidae. Mémoires du Muséum d’Histoire naturelle, 1, 1–433.
Kirejtschuk, A.G. (2008) A current generic classification of sap beetles (Coleoptera, Nitidulidae). Zoosystematica Rossica, 17(1), 107–122.
Lak, M., Néraudeau, D., Nel, A., Cloetens, P., Perrichot, V. & Tafforeau, P. (2008) Phase contrast X-ray synchrotron imaging: opening access to fossil inclusions in opaque amber. Microscopy and Microanalysis, 14, 251–259.
Leschen, R. & Beutel, R.G. (2004) Ocellar atavism in Coleoptera: plesiomorphy or apomorphy? Journal of Zoological Systematics and Evolutionary Research, 42, 63–69.
Martínez-Delclós, X., Briggs, D.E.G. & Peñalver, E. (2004) Taphonomy of insects in carbonates and amber. Palaeogeography, Palaeoclimatology, Palaeoecology, 203, 19–64.
Newton, A.F. (1981) New name for the extinct genus Mesagyrtes Ponomarenko (Coleoptera: Silphidae s.l.). Psyche, 88, 335–336.
Newton, A.F. (1997) Review of Agyrtidae (Coleoptera), with a new genus and species from New Zealand. Annales zoologici, Warszawa, 47, 111–156.
Newton, A.F. (1998) Phylogenetic problems, current classification and generic catalogue of world Leiodidae (including Cholevinae). In: Phylogeny and evolution of subterranean and endogean Cholevidae (=Leiodidae Cholevinae), Proceedings of XX International Congress of Entomology, Firenze, 1996. Atti del Museo regionale di Scienze naturali, Torino, 41–178.
Notman, H. (1921) Some new genera and species of Coleoptera collected at Westfield, Chautauca Co., N. Y. Journal of the New York entomological Society, 83(3–4), 145–160.
Paykull, G. (1798) Fauna svecica. Insecta. Tomus I. Joh. F. Edman, Upsaliae, 10 + 358 pp.
Perkovsky, E.E. (1999a) Evolutionary development of the specific antennal structure in leiodid beetles and systematic position of Jurassic Mesecanus communis and Polysitum elongatum (Coleoptera: Staphylinoidea, Leiodidae). Vestnik Zoologii, 35, 75–79. [in Russian]
Perkovsky, E.E. (1999b) New genus and species of late Jurassic Leiodinae (Coleoptera, Leiodidae) from Mongolia. Vestnik Zoologii, 34, 77–79. [in Russian]
Perkovsky, E.E. (2000) The first find of Leiodid tribe Scotocryptini (Coleoptera: Leiodidae: Leiodinae) in fossil resin (Dominican amber). Paleontologičeskij Žurnal, 34, supplement 3, S331–S332.
Perkovsky, E.E. (2001a) The first Eocene representative of Cholevini—Catops nathani sp. n. from the Baltic amber. Vestnik Zoologii, 35, 75–79. [in Russian]
Perkovsky, E.E. (2001b) The systematic position of the lower Cretaceous beetle Mesecanus parvus (Coleoptera, Staphylinoidea) from Turga. Vestnik Zoologii, 35, 79–81. [in Russian]
Perkovsky, E.E. (2007) A comparative analysis of the Baltic and Rovno amber arthropod faunas: representative samples. African invertebrates, 48, 229–245.
Perkovsky, E.E. (2009) New species of Prionochaeta (Coleoptera, Leiodidae, Cholevinae) from Rovno amber. Vestnik Zoologii, 43(4), 373–377. [in Russian]
Perreau, M. & Tafforeau, P. (2011) Virtual dissection using phase-contrast X-ray synchrotron microtomography: reducing the gap between fossils and extant species. Systematic Entomology, 36, 573–580.
Perreau, M. & Růžička, J. (2007) Systematic position of Perkovskius Lafer 1989 (Coleoptera: Leiodidae), with description of a second species from Far East of Russia. Annales de la Société Entomologique de France (N. S.), 43(3), 257–264.
Ponomarenko, A.G. (1990) Silphidae Latreille, 1807. In: Rasnitsyn, A.P. (Ed.), Late Mesozoic insects of eastern Transbaikalia. Trudi Paleontologicheskogo instituta Akademyi nauk SSSR, 239, 51–53.
Ritzkowski, S. (1997) K-Ar Altersbestimmungen der bernsteinführenden Sedimente des Samlandes (Paläogen, Bezirk Kaliningrad). In: Ganzelewski, M., Rehren, T.H. & Slotta, R. (Eds.), Proceedings of the Symposium Neue Erkenntnisse zum Bernstein. Metalla (Sonderheft), 66, 19–24.
Soriano, C., Azar, D., Delclós, X., Hand, S., Nel, A., Néraudeau, D., Ortega, J., Pérez de la Fuente, R., Perrichot, V., Saupe, E., Solórzano-Kraemer, M. & Tafforeau, P. (2010) Synchrotron phase contrast X-ray imaging of amber inclusions. Comptes Rendus Palevol, 9, 361–368.
Tafforeau, P., Boistel, R., Boller, E., Bravin, A., Brunet, M., Chaimanee, Y., Cloetens, P., Feist, M., Hoszowska, J., Jaeger, J.J., Kay, R.F., Lazzari, V., Marivaux, L., Nel, A., Nemoz, C., Thibault, X., Vignaud, P. & Zabler, S. (2006) Applications of X-ray synchrotron microtomography for non-destructive 3D studies of paleontological specimens. Applied Physics A, Materials Science & Processing, 83, 195–202.
Thomson, C.G. (1867) Skandinaviens Coleoptera, synoptiskt bearbetade. Tom. IX. Lundbergska Boktryckeriet, Lund, 404 pp.
Wheeler, Q.D. (1986) Rediscovery and cladistics placement of the genus Cainosternum (Coleoptera: Leiodidae). Annals of the Entomological Society of America, 79, 377–383.
Wheeler, Q.D. & Miller, K.B. (2005) Slime mold beetles of the genus Agathidium Panzer in North and Central America (Coleoptera: Leiodidae), part I. Bulletin of the American Museum of Natural History, 290, 5–95.