scholarly journals A new stonefly species (Plecoptera: Perlodidae) from Eocene Baltic amber and questions on the wing venation potential for species diagnostic of fossil Plecoptera

2021 ◽  
Vol 4 (3) ◽  
Author(s):  
CORENTIN JOUAULT ◽  
FRÉDÉRIC LEGENDRE ◽  
FABIEN L. CONDAMINE ◽  
ANDRÉ NEL

Examination of Baltic amber Plecoptera reveals a new species of Isoperla: Isoperla baltica sp. nov. The placement of this new species is supported by an in-depth comparison of apomorphies supporting families, subfamilies, and suborders. Contrary to previous descriptions of many fossil species, we took advantage of the good preservation of the genitalia to describe and compare this new species to its extant congeners. Finally, we discuss the usefulness and limitations of relying on wing venation to identify diagnostic characters in Plecoptera by figuring a specimen of Pteroliriope sinitshenkovae Cui, Béthoux, Kondratieff, Shih & Ren, 2016 with numerous crossveins and an original organization of forewing veins.

Zootaxa ◽  
2021 ◽  
Vol 5020 (2) ◽  
pp. 328-336
Author(s):  
MASSIMO OLMI ◽  
DMITRY V. VASILENKO ◽  
LEONARDO CAPRADOSSI ◽  
EVGENY E. PERKOVSKY ◽  
ADALGISA GUGLIELMINO

Lonchodryinus groehni sp. nov. (Hymenoptera: Chrysidoidea: Dryinidae) is described from Baltic amber. The new species is close to L. balticus Olmi & Guglielmino, 2012, but it can be distinguished for the different OPL/POL ratio and 2r-rs&Rs vein of the fore wing. A key to the fossil species of Lonchodryinus and a comparison with the extant species L. ruficornis (Dalman, 1818) are presented.  


Zootaxa ◽  
2018 ◽  
Vol 4500 (1) ◽  
pp. 146
Author(s):  
ZI-WEI YIN ◽  
CHEN-YANG CAI

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. 


2016 ◽  
pp. 1 ◽  
Author(s):  
Michael S. Engel

The first representative of the booklouse genus Embidopsocus Hagen (Nanopsocetae: Liposcelididae) is documented from the blaue Erde of northern Europe.  Embidopsocus pankowskiorum Engel, new species, is similar to the related E. saxonicus Günther from the Bitterfeld deposits (so-called ‘Saxonian amber’) and E. eocenicus Nel et al. from Oise amber, but differs in details of antennal structure, setation, wing venation, and size.  The species is described and comments made regarding its character affinities to other fossil liposcelidids.


2009 ◽  
Vol 40 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Lars Krogmann ◽  
John Jennings

AbstractFossil species of Pristaulacus are uncommon, with just two known species, P. mandibularis Brues and P. praevolans Brues from Baltic amber, and three species, P. bradleyi (Brues), P. rohweri Brues and P. secundus (Cockerell), from the Florissant fossil beds, Colorado, USA. Here we provide a detailed description of Pristaulacus velteni sp.n., the third fossil species known from Baltic amber.


Zootaxa ◽  
2021 ◽  
Vol 5082 (2) ◽  
pp. 177-184
Author(s):  
MAXIM V. NABOZHENKO ◽  
ANDRIS BUKEJS

A new species of comb-clawed beetles of the genus Asiomira Dubrovina, 1973 (A. dubrovinae sp. n.) is described from the Eocene Baltic amber. This newly descovered fossil species displays typical generic characters and is the most similar to the extant Asiomira ophtalmica (Seidlitz, 1896). Both species share a similar shape of the pronotum and the flattened posterior angles of the pronotal disc. Asiomira dubrovinae sp. n. can be distinguished from A. ophtalmica by the smaller body size (4.8 mm in contrast to 6–8.12 mm), more serrate antennomeres, and finer and sparser pronotal punctation. Extant species of the genus are distributed in the arid landscapes of Central Asia with the highest diversity occurring in Tajikistan. Therefore the discovery of a new fossil species from Eocene Baltic amber suggests that Asiomira could have a wider range, and the modern distribution of this group is the result of a later secondary expansion of the ancestral representatives that survived in mid-mountain areas with arboreal and shrub vegetation. Relevant corrections to the distribution of extant species, Asiomira ophtalmica (Seidlitz, 1896) and Asiomira firjusana (Dubrovina, 1973), are given.  


2020 ◽  
Vol 1 (4) ◽  
pp. 164-167
Author(s):  
George Poinar

The present paper describes a new species of encyrtid wasp, Hambletonia dominicana sp. nov. (Hymenoptera: Encyrtidae) from Dominican amber. Diagnostic characters include long antennae that are almost twice the length of the head, the absence of long, coarse, flattened setae on the dorsal apical margin of the pedicel, and an elliptical club subequal in length to that of the funicle. This first described fossil species of Hambletonia provides views of new and possible unique morphological features of encyrtid wasps that existed in the Neotropics during the mid-Tertiary.


2011 ◽  
Vol 80 (4) ◽  
pp. 779-800 ◽  
Author(s):  
Elżbieta Sontag ◽  
Ryszard Szadziewski

Biting midges (Diptera: Ceratopogonidae) in Eocene Baltic amber from the Rovno region (Ukraine) The paper presents the results of an examination of 714 biting midges (Diptera: Ceratopogonidae) preserved in Baltic amber from the Rovno deposits in Ukraine. A new species - Leptoconops rovnensis sp. n. - is described and illustrated. 29 of the fossil species reported here have already been described from other deposits of Baltic amber: 26 of these were also found in amber from the Gulf of Gdańsk and 18 in amber from Bitterfeld (Saxony). The most common genera of biting midges in Ukrainian amber are also found in amber from Bitterfeld and the Gulf of Gdańsk, and with very much the same frequencies. The results indicate that the faunas of Ceratopogonidae enclosed in amber from Rovno, Bitterfeld and the Baltic are very similar, showing that they inhabited similar palaeoenvironments in the same palaeogeographic region.


2013 ◽  
Vol 82 (4) ◽  
pp. 317-325 ◽  
Author(s):  
Christel Hoffeins ◽  
Andrzej J. Woźnica

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.


2013 ◽  
Vol 47 (6) ◽  
pp. 43-48
Author(s):  
T. A. Sergi ◽  
E. E. Perkovsky ◽  
H.-P. Reike

Abstract Based on a fossil specimen from Late Eocene Baltic amber, Revelieria groehni Sergi, Perkovsky et Reike, sp. n., a new species is described. It is the first fossil species of the genus Revelieria Perris, 1869. The new species clearly differs from extant R. californica and R. genei in the following characters: eyes more large and convex; antennal insertion located more close to eye; temples very short; metasternum longer; fore tibia evenly curved inwards.


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