摘要
Fossil water scavenger beetles （Coleoptera： Hydrophilidae） of the latest Oligocene Rott Formation are revised, based on the examination of the type specimens, as well as numerous additional material from Statz （Los Angeles） and Kastenholz （Bonn） collections. Seven hydrophilid species are recognized, five of which are reliably attributed to the following genera： Berosus morticinus （von Heyden and von Heyden, 1866）, Paracymus excitatus （von Heyden and yon Heyden, 1866）, Paracymus sp., Hydrobiomorpha fraterna （von Heyden, 1859）, and Hydrophilus rottensis （Statz, 1939）. Coccinella？protogaeae Germar 1837 is attributed to the subtribe Hydrophilina, and Cymbiodyta？ austera Statz 1939 to the subfamily Hydrophilinae. Hydrous ebeninus Statz 1939 and Paracymus excitatus （form 3） are excluded from the Hydrophlloidea. Berosus capitatus Statz 1939 is synonymized with Berosus morticinus, and Hydrous neptunus von Heyden and von Heyden 1866 with Hydrobiomorphafraterna. Lectotypes of Philydrus morticinus von Heyden and von Heyden 1866 and Hydrous ebeninus Statz 1939 are designated. The significance of the hydrophllid fossils for paleoecological reconstructions of the former Rott Lake is briefly discussed.
Fossil water scavenger beetles （Coleoptera： Hydrophilidae） of the latest Oligocene Rott Formation are revised, based on the examination of the type specimens, as well as numerous additional material from Statz （Los Angeles） and Kastenholz （Bonn） collections. Seven hydrophilid species are recognized, five of which are reliably attributed to the following genera： Berosus morticinus （von Heyden and von Heyden, 1866）, Paracymus excitatus （von Heyden and yon Heyden, 1866）, Paracymus sp., Hydrobiomorpha fraterna （von Heyden, 1859）, and Hydrophilus rottensis （Statz, 1939）. Coccinella？protogaeae Germar 1837 is attributed to the subtribe Hydrophilina, and Cymbiodyta？ austera Statz 1939 to the subfamily Hydrophilinae. Hydrous ebeninus Statz 1939 and Paracymus excitatus （form 3） are excluded from the Hydrophlloidea. Berosus capitatus Statz 1939 is synonymized with Berosus morticinus, and Hydrous neptunus von Heyden and von Heyden 1866 with Hydrobiomorphafraterna. Lectotypes of Philydrus morticinus von Heyden and von Heyden 1866 and Hydrous ebeninus Statz 1939 are designated. The significance of the hydrophllid fossils for paleoecological reconstructions of the former Rott Lake is briefly discussed.
基金
supported by grants from the Czech Academy of Sciences(GAAV)(no. KJB301110901)
the Charles University Grant Agency(GAUK) (no.18307/2007/B-Bio/PrF)
the Ministry of Culture of the Czech Republic(no.MK00002327201)
grant of the Ministry of Education of the Czech Republic(no.MSM0021620828)
funded by the SYNTHESYS Project http://www.synthesys. info/ which is financed by European Community Research Infrastructure Action under the FP7 Integrating Activities Programme(GB-TAF-637)
funded by Deutsche Forschungsgemeinschaft(DFG,German Research Foundation, project no.WE 2942/3-1(to MF and Sonja Wedmann)
