Morphological and molecular characterisation of Chitwoodius coffeae sp. n. (Dorylaimida: Tylencholaimidae) from Vietnam, with a revised taxonomy of the genus

Nematology ◽  
2019 ◽  
Vol 21 (5) ◽  
pp. 509-521
Author(s):  
Ha Hoang ◽  
Hoang Ha Chu ◽  
Thi Anh Duong Nguyen ◽  
Quang Phap Trinh ◽  
Joaquín Abolafia ◽  
...  

Summary Chitwoodius coffeae sp. n. is described, including SEM observations and molecular (D2-D3 expansion segment of the rDNA 28S) analysis, from a coffee plantation in the Central Highlands of Vietnam. The new species is characterised by its 1.69-2.01 mm long body in females and 1.29-1.51 mm in males, lip region offset by deep constriction and 15-17 μm broad, odontostyle 27-30 μm long, neck 340-473 μm long, pharyngeal expansion occupying 52-54% of total neck length, uterus a simple tube-like structure 68-106 μm long, vulva longitudinal (V = 54-59), tail short and rounded conoid (20-28 μm, c = 54-88, c′ = 0.6-0.8) with a nearly terminal projection of inner cuticle layer, spicules 60-64 μm long, and 7-10 spaced ventromedian supplements without hiatus. SEM pictures, available for the first time for a representative of the genus, show a hexagonal (nearly hexastellate) oral field divided into six sectors by the existence of six deep incisures. Molecular analyses, also presented for the first time for a representative of the genus, results in a narrow evolutionary relationship among Chitwoodius and Tylencholaimus, and supports the monophyly of the Tylencholaimidae. This is the first record of Chitwoodius in Asian Far East territories. Chitwoodius ahmadi sp. n. is proposed for a misattributed population of C. seshadrii.

Nematology ◽  
2020 ◽  
Vol 22 (4) ◽  
pp. 469-478
Author(s):  
Hugo H. Mejía-Madrid ◽  
Reyes Peña-Santiago

Summary A new species of Aporcelinus, collected in a natural habitat of central Mexico, is described and illustrated, including molecular (D2-D3 28S-rRNA) data. Aporcelinus zapotitlanensis sp. n. is characterised by its 1.19-1.43 mm long body, lip region offset by a deep constriction and 16.5-18.5 μm broad, odontostyle 19.5-22 long, neck 325-368 μm long, pharyngeal expansion 150-201 μm long or 46-55% of the total neck length, uterus 130-167 μm long and tripartite, V = 54-56, tail conical with finely rounded tip (30-37 μm, c = 34-43, c′ = 1.2-1.4) lacking a distinct dorsal concavity, spicules 48-51 μm long, and 11-12 spaced ventromedian supplements with one or two of them located within the range of the spicules. Molecular analyses confirm the monophyly of Aporcelinus and places the new species within a clade shared with A. infundibulicaudatus and A. amazonicus.


2005 ◽  
Vol 14 (1) ◽  
pp. 129-133
Author(s):  
S.A. Belokobylskij

The genus Hartemita Cameron, 1910 is recorded from Russia for the first time. Hartemita spasskensis sp. n. is described from the Primorsk Territory of Russia. A key to Palaearctic species of Hartemita and a review of Cardiochilinae occurring in Russia are given.


2013 ◽  
Vol 22 (2) ◽  
pp. 286-296
Author(s):  
V.G. Chemyreva ◽  
V.A. Kolyada

The New World genus Pentapria Kieffer is recorded in the Palaearctic Region for the first time. Two new species of this genus, P. ambiptera sp. nov. and P. grebennikovi sp. nov., from the Russian Far East (Primorskiy Territory) and Japan are described and illustrated. Diagnosis of the genus Pentapria is specified. A key to two East Palaearctic species of Pentapria is provided.


2020 ◽  
Vol 54 (2) ◽  
pp. 313-320
Author(s):  
O. V. Anissimova

Euastrum lacustre is reported for Russia for the first time. This alcaliphilic species was found in the periphyton and plankton of three lakes in the Kursk Region (European Russia). A description of morphology, including the relief of cell wall, and habitats where this taxon is found are represented. LM and SEM microphotographs are provided. Morphological differences of E. lacustre from similar species are discussed. New species for region, namely Closterium aciculare, Cosmarium formosulum, C. granatum, C. pseudoinsigne, C. reniforme and Staurastrum pingue, are found in the samples together with E. lacustre.


2016 ◽  
Vol 50 ◽  
pp. 125-141
Author(s):  
A. D. Temraleeva ◽  
S. A. Dronova

Nodosilinea epilithica Perkerson et Casamatta is reported for the first time for Russia. The sample was isolated from a typical chestnut soil in the zone of dry steppes (Volgograd Region) and its identity was confirmed by morphological and molecular analyses. The specific feature of the studied strain is its ability to form nodules at normal (60–75 μmol photons ∙ m-2 ∙ sec-1) light. The number of nodules is supposed to be related to the age of a cyanobacterial culture.


Zootaxa ◽  
2006 ◽  
Vol 1307 (1) ◽  
pp. 55 ◽  
Author(s):  
VALENTINA A. TESLENKO

A new species of Kamimuria, K. lyubaretzi (Plecoptera, Perlidae) from the Russian Far East is described and illustrated for the first time. The description includes all life stages and both sexes. Distributional data are presented.


Zootaxa ◽  
2021 ◽  
Vol 4969 (3) ◽  
pp. 492-510
Author(s):  
DZUNG TRUNG LE ◽  
SALY SITTHIVONG ◽  
TUNG THANH TRAN ◽  
L. LEE GRISMER ◽  
TRUONG QUANG NGUYEN ◽  
...  

A new species of the genus Cyrtodactylus is described from Dien Bien Province, northwestern Vietnam based on morphological and molecular data. Cyrtodactylus ngati sp. nov. can be distinguished from remaining congeners by the following combination of characters: maximum SVL 69.3 mm; dorsal pattern consisting of six dark irregular transverse bands between limb insertions; inter-supranasals one; dorsal tubercles present on occiput, body, hind limbs and on first half of tail; 17–22 irregular dorsal tubercle rows at midbody; lateral folds clearly defined, with interspersed tubercles; 32–38 ventral scales between ventrolateral folds; 13 precloacal pores separated by a diastema of 5/5 poreless scales from a series of 7/7 femoral pores in enlarged femoral scales; precloacal and femoral pores absent in females; 1–3 postcloacal tubercles on each side; transversely enlarged median subcaudal scales absent. In the molecular analyses, the new species is shown to be the sister taxon to C. interdigitalis from Thailand. This is the 47th species of the genus Cyrtodactylus and the first member of the C. brevipalmatus species group recorded from Vietnam. 


Zootaxa ◽  
2021 ◽  
Vol 4966 (5) ◽  
pp. 591-595
Author(s):  
MUZAMIL SYED SHAH ◽  
MOHD KAMIL USMANI

The genus Yalvaciana Ciplak et.al (2002) is reported for the first time from India represented by a new species. Previously the genus comprised a single species, Yalvaciana yalvaci Demirsoy, (1974). Brief information about morphology, distribution and key to species are given. The Holotype has been deposited in the Museum of Zoology Department, AMU (ZDAMU). 


2000 ◽  
Vol 74 (4) ◽  
pp. 654-661 ◽  
Author(s):  
Stephen K. Donovan ◽  
Deborah-Ann C. Rowe

Paleocene spatangoids are unknown from the Antilles, apart from evidence from trace fossils. The peak of spatangoid diversity was the Eocene. Jamaican Oligo-Miocene spatangoids have a relatively low diversity compared with that of the Antillean region. Plio-Pleistocene spatangoids are poorly known from the Antilles (four genera), in contrast to the Oligo-Miocene (16 genera) and Holocene (17 genera). The depauperate Paleocene and Plio-Pleistocene spatangoid faunas are probably in part artifacts of incomplete sampling, facies-related absences, outcrop area effects and the relative brevity of these stratigraphic intervals.To the large echinoid fauna of the Swanswick Formation (Middle-Upper Eocene) of Jamaica is added the schizasterid Aguayoaster schickleri new species. This is the first record of this genus outside Cuba; it is distinctly more elongate than all other known specimens of this genus. The schizasterid Caribbaster loveni (Cotteau, 1875) is recorded from the Swanswick Formation for the first time, the youngest occurrence of this genus in Jamaica. The coeval Claremont Formation has not previously yielded spatangoid echinoids; the brissid Eupatagus cf. antillarum (Cotteau) from a new locality is the first spatangoid known from a lagoonal unit of the White Limestone Group.


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