scholarly journals A new species of Porrhomma Simon, 1884 from the mountains of southern Siberia, Russia (Aranei: Linyphiidae: Linyphiinae)

rej ◽  
2012 ◽  
Vol 21 (1) ◽  
pp. 369374-0 ◽  
Author(s):  
A. V. Tanasevitch
Zootaxa ◽  
2020 ◽  
Vol 4789 (2) ◽  
pp. 441-465
Author(s):  
NIKOLAI M. KOROVCHINSKY

A new species of the genus Bythotrephes is described based on material collected in the mountain lakes of Tyva Republic (Southern Siberia, Russia). The representatives of the new species are especially close to those of B. longimanus having long tl I, straight caudal process, and only two pairs of claws on postabdomen and caudal process, respectively. At the same time, the new species is, on average, smaller with shorter caudal process and fairly long apical setae of second endopodital segment of the thoracic limbs of first pair (tl I). Supplemental data on morphology, taxonomy, and geographic distribution of other species of the genus, e.g., B. arcticus, B. cederströmii, B. brevimanus, and B. lilljeborgi, are presented. For B. cederströmii, in particular, females of first generation hatched from resting eggs are described for the first time. Classification of the genus is discussed and an updated key for species and a hybrid form is presented. The highest species richness of the genus, observed within the Scandinavian Peninsula and in the north of European Russia, may indicate the central region of primary speciation which generally coincides with the region of the last Quaternary maximum glaciation. The isolated occurrence of three species, B. longimanus, B. transcaucasicus, and B. centralasiaticus sp. nov. on the southern border of the genus’ range, in pre-Alpine and mountain lakes of Europe, Transcaucasia, and Southern Siberia (Tyva) and isolated localities of B. arcticus in Northern Kazakhstan, could also be due to the effect of glaciation(s). Regarding the origin of the genus Bythotrephes, it is hypothesized that it occurred in pre-Pleistocene time in the ancient Ponto-Caspian basin, experiencing large-scale transgressions, where the intensive radiation of ancestral Onychopoda probably took place. 


Zootaxa ◽  
2016 ◽  
Vol 4205 (3) ◽  
pp. 286
Author(s):  
ANTON V. VOLYNKIN ◽  
OLEG PEKARSKY

The name Athaumasta was introduced by Hampson (1906) as replacement for Thaumasta Staudinger, 1871 (nec. Gistl). Athaumasta is a small Bryophilinae genus found in southern Siberia, Mongolia, Kazakhstan, Russian Far East, Korea and China. By the male genitalia structure Athaumasta is very close to Victrix Staudinger and Bryophila Treitschke, but characteristic forewing pattern, strong pectinate of male antennae, narrow and dorso-lateral flattened uncus, and distally narrowed and apically pointed valvae are characteristic for the genus. The genus includes six described species, one of which has recently been described (Volynkin 2012), and many species are still undescribed. The species cortex Alphéraky, 1887 was incorrectly included to Athaumasta by Poole (1989), and transferred to the genus Parvispinia Babics, Kononenko & Saldaitis by Babics et al. (2012). The species miltina Püngeler, 1902 distributed in the Tien Shan mountain massif (Püngeler 1902; Lehmann & Bergmann 2005) has appearance very close to Athaumasta, but male antennae much less pectinate (Fig. 12). It was treated by Poole (1989) and Lehmann & Bergmann (2005) as a member of the genus Oederemia Hampson (= Victrix), but was not mentioned by Fibiger et al. (2009) in the checklist of Palaearctic taxa of the genus. The male genitalia of miltina (Fig. 22) differ from those of all other Athaumasta by the broad uncus, apically broadened and rounded valvae, and presence of a torn in cornutus in vesica, whereas in Athaumasta uncus is narrow, valvae are apically narrowed and pointed, cornutus is plate-like or absent. By the male genitalia structure, miltina resembles the genus Victrix, subgenus Rasihia Koҫak, but have broader uncus and strongly different appearance. Thus, the genus position of miltina is unclear. Here we treated miltina as a member of Athaumasta (sensu lato), but its genus position will be revised later in a further revision of Eurasiatic Bryophilinae. 


2013 ◽  
Vol 82 (4) ◽  
pp. 339-342
Author(s):  
Lukasz Emil Mielczarek

ABSTRACT A new species Melangyna soszynskii is described and illustrated from males. The characters separating it from similar species are given. The species is reported only from the eastern Sayan Mountains in southern Siberia (Russia).


Acarina ◽  
2020 ◽  
Vol 28 (2) ◽  
pp. 109-113
Author(s):  
Uusitalo Matti

A new species is described from southern Siberia, Tuva Republic, Russia: Amphialycus (Amphialycus) holarcticus sp. n. (Acari, Endeostigmata, Alycidae). This species can be recognized by its broad naso with longitudinally arranged striae; two pairs of cheliceral setae, posterior one being forked; three pairs of adoral setae; and a large number of genital setae. Two pairs of palpal eupathidia are close to each other, representing a kind of transitional form towards the fusion of the basal parts of eupathidia, observed in the subgenus Orthacarus.


ZooKeys ◽  
2019 ◽  
Vol 899 ◽  
pp. 37-45 ◽  
Author(s):  
Julia Shrubovych

A new species of Nienna was collected in the most northern part of the Palearctic, inside the Arctic Circle. In possessing seta Pc on tergite VII and sternites VI–VII and a very long foretarsal sensillum a, Nienna chukotkasp. nov. is more similar to Alaskaentomon species than to the other Nienna species distributed in southern Siberia and northern China. The new species differs from nearly all other members of Nipponentominae in possessing five anterior setae on tergite VII and in the presence of posterolateral pores on tergite I, as in members of Hesperentomon (Hesperentomidae). An identification key to Nienna species is provided.


1983 ◽  
Vol 94 (9-10) ◽  
pp. 591-593
Author(s):  
Kostas Papanicolaou ◽  
Stella Kokkini
Keyword(s):  

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