Coleoptera

Bukejs, Andris, Biondi, Maurizio & Alekseev, Vitalii I., 2016, New records and species of Crepidodera Chevrolat (Coleoptera: Chrysomelidae) in Eocene European amber, with a brief review of described fossil beetles from Bitterfeld amber, Zootaxa 4193 (2), pp. 390-400 : 398-399

Checklist of Coleoptera described from Bitterfeld amber

Family Agyrtidae Thomson, 1859

1. Ipelates weitshati Perkovsky, 2007

Family Dermestidae Latreille, 1807

2. Anthrenus (Nathrenus) ambericus Háva, Prokop et Herrmann, 2006 3. Attagenus balticus Háva, Prokop et Herrmann, 2008

Family Nitidulidae Latreille, 1802

4. Microsoronia hoffeinsorum Kirejtshuk et Kurochkin, 2010

Family Phalacridae Leach, 1815

5. Neolitochropus hoffeinsorum Lyubarsky et Perkovsky, 2016

Family Erotylidae Latreille, 1802

6. Triplax contienensis Alekseev, 2014

Family Ripiphoridae Gemminger, Harold, 1870 7. Pauroripidius groehni Kaupp et Nagel, 2001

Family Aderidae Winkler, 1927

8. Palaeocnopus saeticornis Alekseev et Grzymala, 2015 9. Palaeocnopus glabricornis Alekseev et Grzymala, 2015 10. Palaeocnopus mara Alekseev et Grzymala, 2015 11. Palaeocnopus densipunctatus Alekseev et Grzymala, 2015

Family Cerambycidae Latreille, 1802

12. Palaeotetropium saxonicum Vitali, 2011 13. Europsimus germanicus Vitali, 2011

Family Chrysomelidae Latreille, 1802

14. Crepidodera decolorata Nadein & Perkovsky, 2010

The known coleopterofauna of Bitterfeld amber composes 14 species belonging to 12 genera and 9 families ( Kaupp et al. 2001; Perkovsky 2007; Kirejtshuk & Kurochkin 2010; Vitali 2011; Alekseev 2014; Alekseev & Grzymala 2015; Háva & Alekseev 2015; Lyubarsky & Perkovsky 2016). Nine beetle species are primarily described from Bitterfeld amber (i.e., their holotypes are from Bitterfeld amber): Ipelates weitshati ; Microsoronia hoffeinsorum ; Neolitochropus hoffeinsorum ; Triplax contienensis ; Palaeocnopus saeticornis ; P. glabricornis ; P.

mara ; Palaeotetropium saxonicum ; Europsimus germanicus , and one of them ( Palaeocnopus densipunctatus ) has been described with a paratype in Bitterfeld and holotype in Baltic amber. Six beetles are known in this amber deposit only: I. weitshati ; M. hoffeinsorum ; N. hoffeinsorum ; T. contienensis ; P. saxonicum ; E. germanicus . Twothirds of actually known number of beetles from Bitterfeld amber (8 species) are known also from Baltic amber, and one species ( Crepidodera decolorata ) is recorded for Rovno, Baltic and Bitterfeld amber. Only four genera are known from Bitterfeld amber and not registered in Baltic amber until now (Neolitochropus Lyubarsky et Perkovsky 2016; Triplax Herbst, 1793 ; Palaeotetropium Vitali, 2011 ; Europsimus Vitali, 2011 ). Three of them (the monotypic phalacrid and cerambycid genera) are palaeoendemic. Based on the available data, it could be tentatively suggested that the beetles of Bitterfeld and Baltic ambers are identical, and that the Bitterfeld amber assemblage could be considered as part of the Eocene Baltic amber (see also Szwedo & Sontag 2013).

The fossil species of beetles from different ambers are mostly described and known from single specimens (singletons) at present. Here we describe a new species based on numerous exemplars from different collections. This provides some insight into the range of variation within a taxon. The discovery and description of such material in Baltic amber also serves to emphasize the potential for further improvement in our knowledge concerning Coleoptera in Eocene ambers. The number of described Chrysomelidae from Baltic amber has increased during the last three years from 7 species ( Alekseev 2013) to 26 species ( Bukejs & Konstantinov 2013; Bukejs & Nadein 2013, 2014, 2015; Moseyko & Kirejtshuk 2013; Biondi 2014; Bukejs 2014; Bukejs & Bezděk 2014; Bukejs & Chamorro 2015; Bukejs et al. 2015; Legalov 2016; Nadein et al. 2016). With a discovery curve such as this, it is almost certain that new taxa from Baltic amber can and will be found.