scholarly journals Shards, sequences, and shorelines: two new species of Bembidion from North America (Coleoptera, Carabidae)

ZooKeys ◽  
2020 ◽  
Vol 1007 ◽  
pp. 85-128
Author(s):  
David R. Maddison
Keyword(s):  
New Species ◽  
North America ◽  
Dna Sequences ◽  
Sex Chromosome ◽  
Morphological Characters ◽  
Two New Species ◽  
Sex Chromosome System ◽  
The Subject ◽  
The One ◽  
Primary Type

Two new species of Bembidion are described from river shores in North America. One, Bembidion mimbressp. nov., from the Gila River watershed in the lands of the Mimbres culture in New Mexico and Arizona, is closely related to the widespread Bembidion levigatum. DNA sequences from several linkage groups and morphology provide evidence of the distinctiveness of B. mimbres. The second, Bembidion corgenomasp. nov., has been the subject of recent genomic and transcriptomic studies. It belongs in the Bembidion transversale subgroup, and occurs from California north to British Columbia, east to Montana and Nevada. The B. transversale subgroup as a whole is reviewed, and morphological characters that distinguish B. corgenoma from the similar and sympatric B. transversale and B. erosum are described and illustrated. DNA sequences of these three species show no consistent differences in 28S, COI, CAD, and Topoisomerase, and a coalescent species delimitation analysis reveals no notable structure within the complex. This is the first known trio of species within Bembidion for which those genes provide no clear signal of species boundaries. A neotype is designated for the one name in the group that lacks a primary type, Bembidium haplogonum Chaudoir. Chromosomes of the new species and their relatives are as is typical for Bembidion, with eleven pairs of autosomes and an XY/XX sex chromosome system.

scholarly journals Cytotaxonomic considerations on the sex chromosome variation observed within Acomys ngurui Verheyen et al. 2011 (Rodentia Muridae)

Zootaxa ◽  
2012 ◽  
Vol 3493 (1) ◽  
pp. 35 ◽  
Author(s):  
RICCARDO CASTIGLIA ◽  
FLAVIA ANNESI
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Sex Chromosome ◽  
East African ◽  
Chromosome Variation ◽  
Mtdna Sequence ◽  
Two New Species ◽  
Morphologic Analysis ◽  
The One ◽  
Future Work

The taxonomy of the East African Muridae belonging to the Acomys spinosissimus Peters 1852 species complex has been recently revised (Verheyen et al., 2011). Two new species have been described by means of external morphologic analysis, craniometry, enzymes, mitochondrial DNA sequences and karyological information. For one of the two new species, Acomys ngurui Verheyen et al. 2011, a polymorphic karyotype has been observed. In fact, for 19 of the 22 karyotyped individuals, the karyotype is identical to the one described for A. spinosissimus s. s. (2n = 60, aFN = 68), characterized by a sex chromosome constitution of the XX/XY type, with an acrocentric X and a submetacentric Y (Dippenaar and Rautenbach, 1986). The remaining three females possess a karyotype that resembles the one reported by Matthey (1965) and Barome et al. (2001) characterized by a unique giant metacentric X chromosome (Xg), and by a variable diploid number (2n = 59–62). These females were found in the three localities in Tanzania together with specimens with the typical ‘spinosissimus’ karyotype. Specimens carrying the Xg were not distinguishable on the basis of their mtDNA sequence or morphology from the other specimens with XY karyotype (Verheyen et al., 2011). The authors concluded that the available evidence did not allow one to give taxonomic value to this chromosomal configuration, characterized by a particular sex determination, hoping for future work that will study the animals bearing this typical karyotype in more detail.

MOTHS OF THE SEMIOTHISA SIGNARIA COMPLEX (LEPIDOPTERA: GEOMETRIDAE)

1974 ◽  
Vol 106 (6) ◽  
pp. 569-621 ◽  
Author(s):  
Douglas C. Ferguson
Keyword(s):  
New Species ◽  
North America ◽  
Host Plants ◽  
Similar Species ◽  
Northeastern North America ◽  
Coniferous Trees ◽  
Two New Species ◽  
Industrial Melanism ◽  
The One ◽  
Main Center

AbstractThe signaria group of the genus Semiothisa is a complex of 10 extremely similar species, most of which are host-specific on certain genera of coniferous trees An eleventh species, S. sexmaculata, is also treated in this revision because of its close resemblance to members of the signaria complex, although its true affinity appears to be with the liturata–bisignata group. The species are described and illustrated, and their synonymy, distribution, variation and biology are discussed in detail, including an account of industrial melanism in a population of S. pinistrobata. Two new species names are proposed, and eight lectotypes designated. The main center of distribution is northeastern North America, and all of the known species except S. fuscaria occur on this continent. The one Holarctic species, S. signaria, which is generally the commonest in collections, also has the widest range of host plants, feeding on at least six genera of coniferous trees.

scholarly journals Two new species of Hygrophorus from temperate Himalayan Oak forests of Pakistan

MycoKeys ◽  
2019 ◽  
Vol 56 ◽  
pp. 33-47 ◽  
Author(s):  
Arooj Naseer ◽  
Abdul Nasir Khalid ◽  
Rosanne Healy ◽  
Matthew E. Smith
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Large Subunit ◽  
Its Region ◽  
Morphological Characters ◽  
Nuclear Ribosomal Dna ◽  
Oak Forests ◽  
Rdna Genes ◽  
Two New Species ◽  
Dark Green

The genus Hygrophorus is poorly studied from Asia. From Pakistan, only one species has been reported so far. Two new species in the genus have been collected from Himalayan oak forests of Pakistan. Hygrophorusalboflavescens (section Pudorini, subgenus Colorati) is characterised by its pure white, centrally depressed pileus, occurrence of white stipe with yellow patches at lower half and broader (4.98 μm) basidiospores. Hygrophorusscabrellus (section Hygrophorus, subgenus Hygrophorus) is characterised by its yellowish-green stipe with white apex that has fine scales on the entire stipe, an off-white pileus with dark green and greyish fibrils, ovoid to ellipsoid basidiospores and clavate 4-spored basidia. Macro- and micromorphological descriptions have revealed that both these taxa are not yet described. Phylogenetic estimation based on DNA sequences from the internal transcribed spacer (ITS) region and large subunit (LSU) of the nuclear ribosomal DNA (rDNA) genes, is congruent with the morphological characters that help to delimit these as new species of Hygrophorus. Allied taxa are also compared.

The first record of Amaurobius C.L. Koch, 1837 (Araneae, Amaurobiidae) from China, with description of two new species

Zootaxa ◽  
2018 ◽  
Vol 4402 (2) ◽  
pp. 363
Author(s):  
LI ZHANG ◽  
LU-YU WANG ◽  
ZHI-SHENG ZHANG
Keyword(s):  
New Species ◽  
North America ◽  
First Record ◽  
Morphological Characters ◽  
Two New Species ◽  
Males And Females

Two new species of Amaurobius from China, A. songi sp. nov. and A. spinatus sp. nov. are described on morphological characters of males and females. They are generally very similar to all known Amaurobius species from India, Europe and North America but differ in some details of the copulatory organs. The two species represent the first record of Amaurobius in China. 

Ramalina europaeaandR. labiosorediata, two new species of theR. pollinariagroup (Ascomycota:Ramalinaceae), and new typifications forLichen pollinariusandL. squarrosus

2017 ◽  
Vol 49 (4) ◽  
pp. 301-319 ◽  
Author(s):  
Arsen GASPARYAN ◽  
Harrie J. M. SIPMAN ◽  
Robert LÜCKING
Keyword(s):  
New Species ◽  
Maximum Likelihood ◽  
North America ◽  
Geographical Distribution ◽  
Morphological Characters ◽  
Small Spine ◽  
Maximum Likelihood Tree ◽  
Two New Species ◽  
The Status ◽  
Morphological Differences

AbstractRamalina europaeaGasparyan, Sipman & Lücking andR. labiosorediataGasparyan, Sipman & Lücking, two species of theR. pollinariagroup, are described here as new to science.Ramalina europaea, widely distributed in Europe, can be distinguished by small, punctiform, often terminal soralia starting out on small, spine-like branchlets, whereasR. labiosorediatafrom North America differs fromR. pollinarias. str. andR. europaeain the almost exclusively terminal soralia formed on the tips of normal lobes, originating from the underside and becoming irregularly labriform. Morphological characters, chemistry, ecology and geographical distribution are discussed and a key to the species of theRamalina pollinariagroup is provided. The topology of a maximum likelihood tree based on ITS shows the presence of three well-supported clades, corresponding to the morphological differences of the three species. The status of several historical names variously placed in synonymy with or described as infraspecific entities ofR. pollinariais reassessed and a new neotype and an epitype are designated forLichen pollinarius, a neotype forL. squarrosus, making it a synonym ofR. farinacea, and lectotypes forR. pollinariavar.elatior, making it a synonym ofR. pollinarias. str., and for var.humilis, a taxon of yet unknown affinity.

scholarly journals Sphagnum incundum a new species in Sphagnum subg. Acutifolia (Sphagnaceae) from boreal and arctic regions of North America

Phytotaxa ◽  
2018 ◽  
Vol 333 (1) ◽  
pp. 1 ◽  
Author(s):  
MAGNI OLSEN KYRKJEEIDE ◽  
KRISTIAN HASSEL ◽  
BLANKA SHAW ◽  
A. JONATHAN SHAW ◽  
EVA M. TEMSCH ◽  
...  
Keyword(s):  
New Species ◽  
North America ◽  
Dna Sequences ◽  
Related Species ◽  
Morphological Characters ◽  
Close Relative ◽  
Morphological Description ◽  
Western Coast ◽  
Closely Related Species ◽  
A New Species

We describe Sphagnum incundum in Sphagnum subgenus Acutifolia (Sphagnaceae, Bryophyta). We used both molecular and morphological methods to describe the new species. Molecular relationships with closely related species were explored based on microsatellites and nuclear and plastid DNA sequences. The morphological description is based on qualitative examination of morphological characters and measurements of leaves and hyalocysts. Morphological characters are compared between closely related species. The results from Feulgen densitometry and microsatellite analysis show that S. incundum is gametophytically haploid. Molecular analyses show that it is a close relative to S. flavicomans, S. subfulvum and S. subnitens, but differs both genetically and in morphological key characters, justifying the description of S. incundum as a new species. The new peatmoss is found in North America along the western coast of Greenland, in Canada from Quebec and Northwest Territories, and Alaska (United States). The new species has a boreal to arctic distribution.

Molecular phylogeny and classification of Chelidurella Verhoeff, stat. restit. (Dermaptera: Forficulidae)

2020 ◽  
pp. 1-37
Author(s):  
Markéta Kirstová ◽  
Robin Kundrata ◽  
Petr Kočárek
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Phylogeny ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Two New Species ◽  
Molecular Phylogenetic

Abstract We present herein the first phylogenetic analysis of the genus Chelidura and the taxonomic revision of the genus Chelidurella, stat. restit., based on DNA sequences. The results confirm the generic status of Chelidurella Verhoeff, 1902 and Mesochelidura Verhoeff, 1902, and they are removed from the synonymy with Chelidura and reinstated as valid genera. Many individual Chelidurella species are defined based on the combination of a few variable characters on the pygidium and forceps, and the systematics and phylogeny of this genus are unclear. The validity of most of the species is revisited here by molecular phylogenetic analyses, and individual morphological characters are evaluated for their relevance in the identification of all described species. We describe two new species to science, Chelidurella galvagnii Kirstová & Kočárek, sp. nov. from Austria, and C. pseudovignai Kočárek & Kirstová, sp. nov. from Italy and Austria; two species, C. guentheri Galvagni, 1994 and C. tatrica Chládek, 2017 are newly synonymized. Critical diagnostic characters are illustrated, and an identification key for males of Chelidurella is provided.

scholarly journals Nothing in (sponge) biology makes sense – except when based on holotypes

2015 ◽  
Vol 96 (2) ◽  
pp. 305-311 ◽  
Author(s):  
Dirk Erpenbeck ◽  
Merrick Ekins ◽  
Nicole Enghuber ◽  
John N.A. Hooper ◽  
Helmut Lehnert ◽  
...  
Keyword(s):  
New Species ◽  
Reference Material ◽  
Species Identification ◽  
Dna Sequences ◽  
Morphological Plasticity ◽  
Morphological Characters ◽  
Molecular Techniques ◽  
Reference Sequences ◽  
Species Descriptions ◽  
Preservation History

Sponge species are infamously difficult to identify for non-experts due to their high morphological plasticity and the paucity of informative morphological characters. The use of molecular techniques certainly helps with species identification, but unfortunately it requires prior reference sequences. Holotypes constitute the best reference material for species identification, however their usage in molecular systematics and taxonomy is scarce and frequently not even attempted, mostly due to their antiquity and preservation history. Here we provide case studies in which we demonstrate the importance of using holotype material to answer phylogenetic and taxonomic questions. We also demonstrate the possibility of sequencing DNA fragments out of century-old holotypes. Furthermore we propose the deposition of DNA sequences in conjunction with new species descriptions.

Sign in / Sign up

Export Citation Format

Share Document