116 Ann. soc. entomol. Fr. (n.s.), 2010, 46 (1–2) : 116-123 ARTICLE New genera and new species of leaf beetles (Coleoptera: Polyphaga: Chrysomelidae) from Lowermost Eocene French amber Abstract. Three new monotypical genera of leaf beetles are described: Aoriopsis eocenicus n. gen, n. sp. and Acolaspoides longipes n. gen., n. sp. from the subfamily Eumolpinae, and also Crepidocnema yantarica n. gen., n. sp. from the subfamily Alticinae. Short reviews of known fossil records of the mentioned subfamilies are given and position of the new genera discussed. Résumé. Nouveaux genres et espèces de Chrysomelidae (Coleoptera : Polyphaga) de l’ambre de l’Eocène inférieur de France. Trois nouveaux genres monotypiques de Chrysomelidae sont décrits : les Eumolpinae Aoriopsis eocenicus n. gen, n. sp. et Acolaspoides longipes n. gen., n. sp. et l’Alticinae Crepidocnema yantarica n. gen., n. sp. Une revue rapide des fossiles connus attribués à ces sous-familles ainsi qu’une discussion sur la position de ces genres nouveaux sont proposés. Keywords: Eumolpinae, Alticinae, new genera, new species, Lowermost Eocene amber, Oise. Alexey G. Moseyko (1) , Alexander G. Kirejtshuk (1) & Andre Nel (2) (1) Zoological Institute of the Russian Academy of Sciences, Universitetskaya emb. 1, St. Petersburg, 199034, Russia (2) CNRS UMR 5202, Muséum National d’Histoire Naturelle, CP 50, Entomologie, 45, rue Buffon, F- 75005 Paris, France E-mail: agk@zin.ru, kirejtshuk@gmail.com, moseyko@mail333.com, anel@mnhn.fr Accepté le 24 septembre 2009 T his paper presents a sixth contribution to the knowledge on fauna of Coleoptera from Lowermost Eocene French amber collected in Oise falls (Batelka et al. 2006; Bílý & Kirejtshuk 2007; Kirejtshuk & Nel, 2008; Kirejtshuk & Nel 2009; Kirejtshuk et al. in press a), and is devoted to families remaining unknown from this resource and poorly known as fossils at all. Te subfamilies considered in the paper are provided with a necessary short review of data on systematics and historical development. More detailed information on representation of these coleopterous families in the fossil record can be obtained from the catalogue by Ponomarenko & Kirejtshuk (2009). All new genera described here are represented by a unique species and, therefore, descriptions of them would considerably overlap with the description of species (‘descriptio generica specifica’). Material and methods Many specimens recovered among inclusions from Lowermost Eocene French amber are deposited in the Laboratoire de Paléontologie, Muséum National d’Histoire Naturelle, Paris. For study of them usual optic equipment was used, in particular the stereomicroscope Olympus SCX9 and inverted microscope Olympus CK 40 in the Paris museum, and also the stereomicroscope microscope Leica MZ 16.0 in the St. Petersburg institute. Type strata. Lowermost Eocene, in amber, circa - 53 Myr, Sparnacian, level MP7 of the mammal fauna of Dormaal. Type locality. Farm Le Quesnoy, Chevrière, region of Creil, Oise department (north of France). Order Coleoptera Infraorder Chrysomeloidea Latreille 1802 Family Chrysomelidae Latreille 1802 Subfamily Eumolpinae Hope 1840 Tis subfamily is known from fossils below the Pleistocene from Middle Eocene Geiseltal (Haupt 1950), Upper Eocene Baltic amber (Helm 1896; Klebs 1910; Hieke & Pietrzeniuk 1984; Zhang 1989), Lower Oligocene Florissant (Scudder 1892; Wickham 1911, 1912; 1914), Lower Oligocene-Dominican amber (Santiago-Blay 1994), Upper Oligoceme-Miocene Bitterfeld amber (Barthel & Hetzel 1982), Oligocene- Miocene Chiapa amber (Gressitt 1963), and also from Upper Jurassic Karatau (Martynov 1926) and Lower Cretaceous Santana (Schwenninger & Schawaller 2007). However in most cases these mentions and descriptions do not include characters which can be used for diagnostics of Eumolpine genera or even clarify the subfamily and frequently family attribution. Among inclusions of the Lowermost Eocene French amber two specimens of this subfamily were recently found and each belongs to separate genera. Tis subfamily can be diagnosed due to the hypognatous head not constricted on the base, antennae not closely inserted and separated by frons, tarsomere