scholarly journals A new fossil species of the genus Bibio, with an update on bibionid flies from Baltic and Rovno amber (Diptera, Bibionidae)

2021 ◽  
Vol 68 (1) ◽  
pp. 81-99
Author(s):  
John Skartveit
Keyword(s):  
Rovno Amber ◽  
Baltic Amber ◽  
Male Specimen ◽  
Fossil Species ◽  
First Time

Species of Bibionidae from Baltic amber are reevaluated based on newly discovered material, and a key to the species is given. Bibio succineussp. nov. is described based on one male specimen, this is the first Bibio named from Baltic amber. The males of Hesperinus electrus Skartveit, 2009 and Penthetria montanaregis Skartveit, 2009 are redescribed. A single, autoclave treated specimen of Penthetria sp. is described but not formally named. Plecia tenuicornis Skartveit, 2009 is found to be a synonym of Plecia hoffeinsorum Skartveit, 2009, this species is recorded for the first time from Rovno amber, and both sexes of the species redescribed. Additional specimens of Plecia clavifemur Skartveit, 2009 and Dilophus crassicornis Skartveit, 2009 are described. Two female specimens probably belonging to the species discussed as Dilophus sp. by Skartveit (2009) are described, but not formally named.

A new fossil species of Euroleptochromus Jałoszyński (Coleoptera: Staphylinidae: Scydmaeninae) from Eocene Baltic amber

Zootaxa ◽  
2018 ◽  
Vol 4500 (1) ◽  
pp. 146
Author(s):  
ZI-WEI YIN ◽  
CHEN-YANG CAI
Keyword(s):  
New Species ◽  
The Body ◽  
Baltic Amber ◽  
Body Parts ◽  
Fossil Species ◽  
First Time ◽  
A New Species

A new species of the extinct scydmaenine genus Euroleptochromus Jałoszyński (Mastigitae: Leptochromini), E. tuberculatus Yin & Cai, sp. nov., is described from Eocene Baltic amber. It can be separated from the two previously known congeners by the different proportions of the body parts and spination of the profemur, and more importantly, lack of an elongate postgenal process of the head. Our finding demonstrates for the first time a notable variability of the postgenal structures within Euroleptochromus. 

A new fossil Eurypinae genus and sexual dimorphism in the representatives of Omineus (Coleoptera: Mycteridae) from Tertiary amber of Europe

Zootaxa ◽  
2020 ◽  
Vol 4820 (3) ◽  
pp. 551-562
Author(s):  
VITALII IGOREVICH ALEKSEEV ◽  
ANDRIS BUKEJS ◽  
DARREN ANDREW POLLOCK
Keyword(s):  
Computed Tomography ◽  
Sexual Dimorphism ◽  
Baltic Amber ◽  
Micro Computed Tomography ◽  
Fossil Species ◽  
X Ray ◽  
Secondary Sexual Characters ◽  
Kaliningrad Region ◽  
First Time ◽  
Secondary Sexual

Europoeurypus inglaeso gen. et sp. nov. is described from Eocene Baltic amber found on the Sambian Peninsula, Kaliningrad Region, Russia. Four additional specimens of mycterid beetles from collections of Baltic amber are reported. The secondary sexual characters and sexual dimorphism in the Eocene representatives of the genus Omineus Lewis, 1895 are documented for the first time and examined using X-ray micro-computed tomography (μCT). The studied Omineus male specimens were attributed to the fossil species Omineus febribilis Alekseev, Pollock & Bukejs, 2019. A key to fossil species of Eurypinae from Eocene ambers is provided and several aspects of the biogeography of the subfamily Eurypinae are discussed.

scholarly journals Toponyms and Ethnonyms in the Names of Rovno Amber Animals and Plants

2015 ◽  
Vol 49 (5) ◽  
pp. 407-412 ◽  
Author(s):  
E. E. Perkovsky
Keyword(s):  
Plant Species ◽  
Animal Species ◽  
Rovno Amber ◽  
Baltic Amber ◽  
First Time

Out of 49 names of genera described from Rovno amber, 10 names (20.4 %) are related to Ukrainian toponyms. One way or another, 15.7 % of names out of 217 animal species described from Rovno amber and 67 % out of 6 described plant species are related to Ukrainian toponyms and ethnonyms. Today, only 8 out of 217 species described from Rovno amber, are known from Baltic amber. Th e ratio between Ukrainian and Baltic toponyms in the names of Rovno representatives of any given family directly depends both on the degree of exploration of a family in the corresponding faunas and floras, and on the degree of a family’s link with the ecosystem of the amber forest itself. Ant Formica paleopolonica Dlussky is recorded for Rovno amber for the first time.

scholarly journals A new fossil species of <i>Attagenus</i> Latreille (Coleoptera: Dermestidae) in Rovno and Baltic ambers, with a brief review of known fossil beetles from the Rovno amber Lagerstätte

Fossil Record ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 95-104
Author(s):  
Andris Bukejs ◽  
Jiří Háva ◽  
Vitalii I. Alekseev
Keyword(s):  
Rovno Amber ◽  
Baltic Amber ◽  
Beetle Species ◽  
Generic Level ◽  
Fossil Species ◽  
The Common ◽  
The Moment ◽  
The Relationship

Abstract. Based on two specimens originating from Eocene Rovno and Baltic ambers, Attagenus (Aethriostoma) gedanicissimus sp. nov. is described, illustrated and compared with the related fossil Mesozoic species A. (Aethriostoma) turonianensis Peris et Háva, 2016. The common beetle species for Baltic and Rovno ambers suggests the exceptional temporal and geographical closeness of palaeoecosystems that produced both amber deposits. An updated checklist of Coleoptera known from Rovno amber (57 species belonging to 20 families) is compiled and provided with a bibliography of the original descriptions. The registered Rovno amber beetle assemblage contains only eight species that also occur in Baltic amber (14 %), while the similarity at the generic level is 56 % at the moment. The relationship between the Rovno and Baltic amber deposits and subjectiveness of present-day results of the beetle assemblage research are briefly discussed (urn:lsid:zoobank.org:pub:289B5A43-C57A-4B75-8A15-6E61F4AFCD81).

scholarly journals Description of the male of fossil <i>Calomicrus eocenicus</i> Bukejs et Bezděk (Coleoptera: Chrysomelidae: Galerucinae) from Eocene Baltic amber using X-ray microtomography

Fossil Record ◽  
2020 ◽  
Vol 23 (1) ◽  
pp. 105-115 ◽  
Author(s):  
Andris Bukejs ◽  
Jan Bezděk ◽  
Vitalii I. Alekseev ◽  
Kristaps Kairišs ◽  
Ryan C. McKellar
Keyword(s):  
Body Size ◽  
Body Cavity ◽  
The Body ◽  
Baltic Amber ◽  
Sexually Dimorphic ◽  
Apical Margin ◽  
Fossil Species ◽  
X Ray ◽  
Total Body ◽  
First Time

Abstract. A male representative of the extinct species Calomicrus eocenicus Bukejs et Bezděk, 2014 (Chrysomelidae: Galerucinae) is found and described for the first time from Eocene Baltic amber using X-ray microtomography. The aedeagus is well preserved within the body cavity of the specimen, and it is illustrated in detail. This fossil species exhibits distinct sexual dimorphism: the male has a smaller total body size, as well as a copula-adapted modification in abdominal ventrite 5 (apical margin deeply trilobed, with round medial fovea present); meanwhile the female is larger in body size and has a simple abdominal ventrite 5 (without fovea, non-incised and widely rounded apically). Similar sexually dimorphic characters are typical for extant members of the tribe Luperini, and this report is the first time that they are described in an Eocene species. The known sexually dimorphic characters present in Coleoptera within Eocene Baltic amber are briefly discussed.

Description of a new species Eopseudopomyza szadziewskii sp. n. and redescription of E. kuehnei HENNIG, 1971 from Eocene Baltic amber (Diptera: Pseudopomyzidae)

2013 ◽  
Vol 82 (4) ◽  
pp. 317-325 ◽  
Author(s):  
Christel Hoffeins ◽  
Andrzej J. Woźnica
Keyword(s):  
New Species ◽  
Taxonomic Position ◽  
Baltic Amber ◽  
Fossil Species ◽  
Relationship Of ◽  
First Time ◽  
A New Species

ABSTRACT Eopseudopomyza szadziewskii sp. n. is described from Baltic amber. A series of Eopseudopomyza kuehnei is examined and the male is described for the first time. A key to the fossil species is presented. The taxonomic position and relationship of the genus Eopseudopomyza HENNIG, 1971 within the Pseudopomyzidae is discussed.

A new species of parasitoid wasps (Hymenoptera: Diapriidae: Belytinae) from Eocene Baltic amber

2020 ◽  
Vol 3 (6) ◽  
pp. 614-622
Author(s):  
CORENTIN JOUAULT ◽  
ANDRÉ NEL
Keyword(s):  
New Species ◽  
Baltic Amber ◽  
Parasitoid Wasps ◽  
Male Specimen ◽  
Fossil Species ◽  
Extant Genus ◽  
A New Species

Acropiesta perrichoti sp. nov., a new belytine wasp is described based on a well preserved male specimen from Eocene Baltic amber. This is the second fossil species of this extant genus, known already from the same amber deposit by Acropiesta janzeni Buhl, 2002.

scholarly journals Tropical and Holarctic Ants in Late Eocene Ambers

2016 ◽  
Vol 50 (2) ◽  
pp. 111-122 ◽  
Author(s):  
E. E. Perkovsky
Keyword(s):  
New Records ◽  
Late Eocene ◽  
Rovno Amber ◽  
Baltic Amber ◽  
Tropical Species ◽  
Number Of Species ◽  
Danish Amber ◽  
First Time ◽  
Holarctic Species

Abstract Based on representative collections, the ratio of tropical and Holarctic ant species in Priabonian (Late Eocene) Baltic, Bitterfeld (Saxonian), Danish and Rovno ambers is analyzed for the first time. In surveyed representative collections of Baltic amber, the ratios of Holarctic and tropical ant species are from 1.1 to 1.5; with 10 Holarctic and 9 tropical species (out of 31) in the PIN-964 collection, and 9 and 5 species (out of 29) in the Giecewicz collection; the ratio in the representative collection of Saxonian amber is 0.9, 11 Holarctic species vs. 12 tropical species (out of 55); in the representative collection of Rovno amber it is 0.65, 15 vs. 23 species (out of 79); and in the representative collection of Danish amber it is 0.64, 7 vs. 11 species (out of 36). Hence, in representative collections of Baltic amber, Holarctic species clearly prevail not just in terms of the share of their specimens (by 9.8 to 19.6 times), but also by the number of species. In Bitterfeld amber, Holarctic species are somewhat less numerous than tropical ones, but their specimens are 6 times greater. In representative collections of Rovno and Danish ambers, the number of Holarctic species is 1.5 to 1.7 times smaller than that of tropical species, but the number of their specimens is 4.9 to 6.9 times greater. The numbers of tropical and Holarctic species represented by more than one specimen is similar in Priabonian ambers, 25 versus 22, but Holarctic species include four dominants or subdominants. The abundance of temperate elements in the Priabonian amber ant fauna along with the relatively small number of tropical elements greatly distinguishes it from the Middle European Lutetian ant faunas of Messel and Eckfeld in shale, which do not have temperate elements at all. Formica phaethusa Wheeler, Glaphyromyrmex oligocenicus Wheeler, Plagiolepis squamifera Mayr, Proceratium eocenicum Dlussky, Hypoponera atavia (Mayr), Ponera lobulifera Dlussky, Aphaenogaster mersa Wheeler, and Ennaemerus reticulatus Mayr are new records for Rovno amber, and Formica gustawi Dlussky and Gnamptogenys europaea (Mayr) for Danish amber.

Redescription of the fossil oribatid mite Scutoribates perornatus, with implications for systematics of Unduloribatidae (Acari: Oribatida)

Zootaxa ◽  
2010 ◽  
Vol 2666 (1) ◽  
pp. 45 ◽  
Author(s):  
EKATERINA A. SIDORCHUK ◽  
ROY A. NORTON
Keyword(s):  
Electron Microscopy ◽  
Direct Observation ◽  
Type Species ◽  
Oribatid Mite ◽  
Type Specimen ◽  
Rovno Amber ◽  
Baltic Amber ◽  
Fossil Species ◽  
Mite Genus ◽  
Subjective Synonym

The monotypic oribatid mite genus Scutoribates Sellnick, 1918 has been based only on fossil specimens of the type species—S. perornatus Sellnick, 1918—from Baltic amber. The type specimen is lost, and the genus has been assumed to be a junior subjective synonym of Eremaeozetes (Eremaeozetidae). Herein, we redescribe S. perornatus based on stereoand compound-microscopy of embedded fossils at magnifications up to 1000X, and both direct observation and electron microscopy of removed cuticular fragments. Specimens included 52 non-type adult fossils from Eocene (Baltic and Rovno) amber, several of which had been studied and identified by Sellnick. One of the latter, housed in the Kaliningrad Museum of Amber (KMA; № 197-07), is designated neotype. A presumed tritonymph is also described. While Scutoribates and Eremaeozetes share certain aspects of facies, the genera are clearly not synonyms. Rather, Scutoribates is a senior subjective synonym of two monotypic extant genera currently included in different families: Kunstella Krivolutsky, 1974 in Oribatellidae and Koreoribates Choi, 1994 in Unduloribatidae (new synonymies). We show that Unduloribatidae is the appropriate family and list characters that distinguish the three known species of Scutoribates: S. perornatus Sellnick, S. foliatus (Choi) n. comb. and S. foveolatus (Krivolutsky) n. comb. The transfer of Scutoribates from Eremaeozetidae removes the only presumed tropical element from the oribatid fauna of Baltic amber. We also designate a neotype (№197-24 in the KMA) for the amber fossil species Tectoribates parvus Sellnick 1931; however, the currently used combination of Unduloribates parvus needs confirmation.

scholarly journals New Records Of The Dipteran Genera Triphleba (Phoridae) And Prosphyracephala (Diopsidae) In Rovno And Baltic Ambers

2015 ◽  
Vol 49 (3) ◽  
pp. 245-250 ◽  
Author(s):  
E. E. Perkovsky ◽  
M. B. Mostovski ◽  
H. Henderickx
Keyword(s):  
New World ◽  
New Records ◽  
Rovno Amber ◽  
Baltic Amber ◽  
Wing Venation ◽  
Upper Eocene ◽  
Old World ◽  
Lower Oligocene ◽  
The Baltic ◽  
First Time

Abstract Dipteran insects constitute 51 % among arthropods of the Rovno Amber. There are 99 species and 23 genera of the Diptera described from the Rovno Amber; however, to date only 32 species are shared with the Baltic Amber fauna, including two species that are treated in this paper. Triphleba schulmanae Brown, 2003 (Phoridae), originally described from the Baltic Amber, is recorded in the Rovno Amber for the first time and its amended description is supplied. Genus Prosphyracephala Hennig, 1965 (Diopsidae), earlier known from the Baltic and Saxonian ambers, the Upper Eocene of Ruby River (Montana, USA) and the Lower Oligocene of Céreste (France), is recorded in the Rovno Amber for the first time. Prosphyracephala aff. succini (Loew, 1873) is the first diopsid record from Ukraine. A second specimen of Prosphyracephala kerneggeri Kotrba, 2009 is found in the Baltic amber; the complete wing venation is described for the first time for this species. Vast majority of the Old World Diopsidae are strictly thermophilous. In fact, all of them but the five species of brevicornis group of Sphyracephala Say (three Palearctic and two Nearctic ones) frequent tropic and the warmest subtropic areas, however the thermophilous Diopsidae are known in the New World neither in past nor in contemporary fauna.

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