Phylogenetic position of Sphincterodiplostomum Dubois, 1936 (Digenea: Diplostomoidea) with description of a second species from Pantanal, Brazil

2021 ◽  
Vol 95 ◽  
Author(s):  
T.J. Achatz ◽  
J.A. Bell ◽  
F.T.V. Melo ◽  
A. Fecchio ◽  
V.V. Tkach
Keyword(s):  
Morphological Study ◽  
Type Species ◽  
Sequence Data ◽  
First Record ◽  
Phylogenetic Position ◽  
Neotropical Fish ◽  
Mature Adult ◽  
Dna Sequence Data ◽  
Interspecific Divergence ◽  
Anterior Extent

Abstract Sphincterodiplostomum is a monotypic genus of diplostomid digeneans that parasitize fish-eating birds in the neotropics. The type species Sphincterodiplostomum musculosum has a unique, dorsal, tubular invagination in the opisthosoma with a muscular sphincter. Whereas larvae of S. musculosum are relatively commonly reported in Neotropical fish helminth surveys, adult specimens from birds are rarely collected. Prior to our study, no DNA sequence data for S. musculosum were available. Our molecular and morphological study of mature and immature adult Sphincterodiplostomum specimens from three species of birds and one species of crocodilian revealed the presence of at least two species of Sphincterodiplostomum in the neotropics. We provide the first molecular phylogeny of the Diplostomoidea that includes Sphincterodiplostomum. In addition, this is the first record of S. musculosum from caimans, along with the first record of fully mature adult S. musculosum from green kingfisher Chloroceryle americana. The new species of Sphincterodiplostomum (Sphincterodiplostomum joaopinhoi n. sp.) can be morphologically distinguished from S. musculosum based on the anterior extent of vitelline follicles, narrower prosoma, substantially smaller holdfast organ and structure of tegumental spines. Our data revealed 0.7% interspecific divergence in 28S and 10.6–11.7% divergence in cox1 sequences between the two Sphincterodiplostomum species.

scholarly journals Just a Fragment of Undescribed Diversity: Twenty New Oriental and Palearctic Species of Sciaroidea (Diptera), including DNA Sequence Data and Two New Fossil Genera

Insects ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 19
Author(s):  
Jan Ševčík ◽  
Heikki Hippa ◽  
Nikola Burdíková
Keyword(s):  
Type Species ◽  
Sequence Data ◽  
First Record ◽  
New Genera ◽  
Burmese Amber ◽  
Mitochondrial Coi ◽  
Dna Sequence Data ◽  
Incertae Sedis ◽  
The Family ◽  
Palearctic Species

The following 17 extant new species of Sciaroidea (Diptera: Bibionomorpha) are described: Bolitophila nikolae Ševčík sp. nov. (Bolitophilidae, Taiwan), Catocha jingfui sp. nov. (Cecidomyiidae, Taiwan), Catocha manmiaoe sp. nov. (Cecidomyiidae, Taiwan), Catocha shengfengi sp. nov. (Cecidomyiidae, Taiwan), Planetella taiwanensis sp. nov. (Cecidomyiidae, Taiwan), Diadocidia pseudospinusola sp. nov. (Diadocidiidae, Taiwan), Asioditomyia bruneicola sp. nov. (Ditomyiidae, Brunei), Asioditomyia lacii sp. nov. (Ditomyiidae, Taiwan), Ditomyia asiatica sp. nov. (Ditomyiidae, Thailand), Chetoneura davidi sp. nov. (Keroplatidae, Brunei), Euceroplatus mantici sp. nov. (Keroplatidae, Thailand), Setostylus fangshuoi sp. nov. (Keroplatidae, Taiwan), Platyceridion yunfui sp. nov. (Keroplatidae, Hainan), Terocelion adami sp. nov. (Keroplatidae, Taiwan), Hadroneura martini sp. nov. (Mycetophilidae, Taiwan), Paratinia furcata sp. nov. (Mycetophilidae, Czech Republic, Slovakia), and Nepaletricha sikorai sp. nov. (Sciaroidea incertae sedis, Thailand). Two new genera are described from the mid-Cretaceous Burmese amber, Burmasymmerus gen. nov. (Ditomyiidae, type species Burmasymmerus korneliae sp. nov., including also B. wieslawi sp. nov.), representing the first record of the family Ditomyiidae from the Mesozoic, and Burmatricha gen. nov. (Sciaroidea incertae sedis, type species Burmatricha mesozoica sp. nov.). Molecular phylogeny of Ditomyiidae, based on two DNA markers (28S, COI), as well as that of Catocha Haliday, 1833, based on the mitochondrial COI and 16S fragments, are also presented.

Molecular phylogeny and systematics of the centipede genus Ethmostigmus Pocock (Chilopoda : Scolopendromorpha) from peninsular India

2018 ◽  
Vol 32 (6) ◽  
pp. 1316 ◽  
Author(s):  
Jahnavi Joshi ◽  
Gregory D. Edgecombe
Keyword(s):  
Dna Sequence ◽  
Molecular Phylogenetics ◽  
Sequence Data ◽  
Indian Plate ◽  
Eastern Ghats ◽  
Integrative Approach ◽  
Phylogenetic Position ◽  
Ecological Data ◽  
Peninsular India ◽  
Dna Sequence Data

Integrative taxonomy assesses the congruence between different lines of evidence for delimiting species, such as morphological, molecular or ecological data. Herein molecular phylogenetics is used to test monophyly and determine the phylogenetic position of the Old World tropical centipede genus Ethmostigmus Pocock, 1898, and to define species boundaries for Ethmostigmus in peninsular India. A phylogeny of the family Scolopendridae based on DNA sequence data for three markers from 427 specimens sampling in all major lineages (144 individuals generated in this study) recovers Ethmostigmus as a monophyletic group, but relationships among the genera in its subfamily Otostigminae are poorly supported. Two species delimitation methods for DNA sequence data and phylogeny are integrated with morphology and geographic data to propose a well-supported species hypothesis for Ethmostigmus on the peninsular Indian plate. Five species of Ethmostigmus are recognised in peninsular India, of which E. coonooranus Chamberlin, 1920 and three new species, namely, E. agasthyamalaiensis, sp. nov., E. sahyadrensis, sp. nov. and E. praveeni, sp. nov., occur in the Western Ghats, a biodiversity hotspot. The lesser-known Eastern Ghats harbour one species, E. tristis (Meinert, 1886), which has been nearly unreported for 130 years. This study highlights the value of an integrative approach to systematics, especially in underexplored, high biodiversity regions and where morphological variation is limited among closely related species.

scholarly journals The Genera of Fungi – G6: Arthrographis, Kramasamuha, Melnikomyces, Thysanorea, and Verruconis

2020 ◽  
Vol 6 (1) ◽  
pp. 1-24
Author(s):  
M. Hernández-Restrepo ◽  
A. Giraldo ◽  
R. van Doorn ◽  
M.J. Wingfield ◽  
J.Z. Groenewald ◽  
...  
Keyword(s):  
New Species ◽  
Dna Sequence ◽  
Type Species ◽  
New Genus ◽  
Sequence Data ◽  
Dna Sequence Data ◽  
Two New Species ◽  
First Time

The Genera of Fungi series, of which this is the sixth contribution, links type species of fungal genera to their morphology and DNA sequence data. Five genera of microfungi are treated in this study, with new species introduced in Arthrographis, Melnikomyces, and Verruconis. The genus Thysanorea is emended and two new species and nine combinations are proposed. Kramasamuha sibika, the type species of the genus, is provided with DNA sequence data for first time and shown to be a member of Helminthosphaeriaceae (Sordariomycetes). Aureoconidiella is introduced as a new genus representing a new lineage in the Dothideomycetes.

Description of the immature stages of the Neotropical whirligig beetle Gyrinus (Neogyrinus) rozei Ochs, 1953 (Coleoptera: Gyrinidae) and first report of the parasitoid wasp Melanosmicra sp. (Hymenoptera: Chalcididae) on a Gyrinus species

Zootaxa ◽  
2020 ◽  
Vol 4732 (1) ◽  
pp. 99-116
Author(s):  
DANIARA COLPANI ◽  
CÉSAR JOÃO BENETTI ◽  
NEUSA HAMADA ◽  
VANDERLY ANDRADE-SOUZA ◽  
KARINE SCHOENINGER ◽  
...  
Keyword(s):  
Dna Sequence ◽  
Sequence Data ◽  
Parasitoid Wasp ◽  
First Record ◽  
The Body ◽  
Immature Stages ◽  
Cytochrome Oxidase Subunit ◽  
Dna Sequence Data ◽  
Gene Coi ◽  
Northern Brazil

In most species of Gyrinidae, the immature stages are unknown, especially due to the difficulty in collecting the juveniles and assigning them to a particular species. Molecular association is a feasible technique that may solve this problem. Recent studies have used DNA sequence data, specifically the gene cytochrome oxidase subunit I (COI), to associate immature and adult stages, thus enabling the description of the former. The objectives of this study were (1) to describe and illustrate the immature stages of Gyrinus (Neogyrinus) rozei Ochs, 1953 including morphometric, chaetotaxic and bionomic information, and (2) to assess the usefulness of the gene COI to associate immatures and adults of Gyrinus. The studied specimens were collected in Roraima state, northern Brazil. The association of immature and adult stages was done either by rearing adults under laboratory conditions or by using DNA sequence data (COI). Eggs were described based on scanning electron microscopy; they are distinguished mainly by several features of chorion, micropyle and reticulation. Larvae of G. (N.) rozei can be distinguished from those of other Neotropical Gyrinidae by a combination of several characters, including the stipes with five robust hook-like additional setae on the dorsointernal margin, and the lacinia roughly hook-shaped. The pupa is similar to that of G. argentinus Steinhel, 1869, except for the number of setae on the body. The first record of the parasitoid wasp Melanosmicra sp. (Hymenoptera: Chalcididae) on a Gyrinus species is also provided. 

Revision of Australian jumping spider genus Servaea Simon 1887 (Aranaea: Salticidae) including use of DNA sequence data and predicted distributions

Zootaxa ◽  
2012 ◽  
Vol 3350 (1) ◽  
pp. 1 ◽  
Author(s):  
BARRY J. RICHARDSON ◽  
NICOLE L. GUNTER
Keyword(s):  
Nucleotide Sequence ◽  
Dna Sequence ◽  
Type Species ◽  
Sequence Data ◽  
Sandy Soils ◽  
Soil Types ◽  
Sequence Information ◽  
Suitable Material ◽  
Dna Sequence Data ◽  
Nucleotide Sequence Information

The genus Servaea Simon 1887 is revised and redefined. Descriptions and identification keys are provided to the following sixspecies, of which three are described as new: Servaea incana (Karsch 1878), Servaea narraweena n. sp., Servaea melaina n.sp., Servaea spinibarbis Simon 1909, Servaea villosa (Keyserling 1881) and Servaea zabkai n. sp. The type species of thegenus, Servaea vestita (L. Koch 1879), is proposed here to be a junior synonym of Servaea incana. In addition to the diagnosesand descriptions, distributional and nucleotide sequence information are provided. DNA sequence data for the segment of COIused in other salticid studies was obtained for the five species for which suitable material was available. Intraspecific variationin S. villosa and S. incana were studied in more detail. Within-species divergence was S. melaina and S spinibarbis, had adjacent predicted distributions, one coastal on sandy soils and one inland on other soil types.

Phylogeny, biogeography and foliar manganese accumulation of Gossia (Myrtaceae)

2018 ◽  
Author(s):  
Todd McLay ◽  
Gareth D. Holmes ◽  
Paul I. Forster ◽  
Susan E. Hoebee ◽  
Denise R. Fernando
Keyword(s):  
Sequence Data ◽  
Incomplete Lineage Sorting ◽  
Phylogenetic Position ◽  
Strongly Correlated ◽  
Lineage Sorting ◽  
Dna Sequence Data ◽  
Australian Species ◽  
Wide Range ◽  
Single Clade ◽  
The Relationship

The rainforest genus Gossia N.Snow & Guymer (Myrtaceae) occurs in Australia, Melanesia and Malesia, and is capable of hyperaccumulating the heavy metal manganese (Mn). Here, we used nuclear ribosomal and plastid spacer DNA-sequence data to reconstruct the phylogeny of 19 Australian species of Gossia and eight New Caledonian taxa. Our results indicated that the relationship between Gossia and Austromyrtus (Nied.) Burret is not fully resolved, and most Australian species were supported as monophyletic. Non-monophyly might be related to incomplete lineage sorting or inaccurate taxonomic classification. Bark type appears to be a morphological synapomorphy separating two groups of species, with more recently derived lineages having smooth and mottled ‘python’ bark. New Caledonian species were well resolved in a single clade, but were not the first diverging Gossia lineage, calling into doubt the results of a recent study that found Zealandia as the ancestral area of tribe Myrteae. Within Australia, the evolution of multiple clades has probably been driven by well-known biogeographic barriers. Some species with more widespread distributions have been able to cross these barriers by having a wide range of soil-substrate tolerances. Novel Mn-hyperaccumulating species were identified, and, although Mn hyperaccumulation was not strongly correlated with phylogenetic position, there appeared to be some difference in accumulation levels among clades. Our study is the first detailed phylogenetic investigation of Gossia and will serve as a reference for future studies seeking to understand the origin and extent of hyperaccumulation within the Myrteae and Myrtaceae more broadly.

A new and endangered species of Iochroma (Solanaceae) from the cloud forests of central Peru and its phylogenetic position in Iochrominae

Phytotaxa ◽  
2015 ◽  
Vol 227 (2) ◽  
pp. 147 ◽  
Author(s):  
Marco Antonio Cueva Manchego ◽  
STACEY DEWITT SMITH ◽  
SEGUNDO LEIVA GONZÁLES
Keyword(s):  
New Species ◽  
Endangered Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Phylogenetic Position ◽  
Cloud Forests ◽  
Dna Sequence Data ◽  
A New Species ◽  
Iucn Criteria

Iochroma amicorum M. Cueva, S. D. Sm. & S. Leiva (Solanaceae), a new species from cloud forests of Central Peru, is described and illustrated. Phylogenetic analyses of DNA sequence data suggest that Iochroma amicorum is closely related to I. nitidum, I. umbellatum, I. grandiflorum and I. tingoanum, which collectively form the “U” clade of Iochrominae. Certain morphological characteristics of calyx and corolla as well as the type of habitat appear to be common in species of this clade. Iochroma amicorum is easily distinguished from other members of the “U” clade by its campanulate or funnel-shaped corolla with short and slightly reflexed lobes, the presence of an expanded stapet at the point of filament insertion with short lateral extensions united to the corolla, and its globose usually white fruits with tinges of purple at the base. Distribution, phenology and are discussed together with the position of the new species in Iochrominae. Iochroma amicorum is assessed as Endangered according to IUCN criteria B1ab (i, iii)

scholarly journals Morphology, Morphogenesis, and Molecular Phylogeny of a New Freshwater Ciliate, Quadristicha subtropica n. sp. (Ciliophora, Hypotrichia)

2021 ◽  
Vol 12 ◽  
Author(s):  
Chen Shao ◽  
Qi Gao ◽  
Alan Warren ◽  
Jingyi Wang
Keyword(s):  
Sequence Data ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Small Subunit ◽  
Systematic Position ◽  
Phylogenetic Position ◽  
Dna Sequence Data ◽  
Freshwater Pond ◽  
Small Subunit Ribosomal Dna

The morphology and the regulation of cortical pattern associated with the cell size, division, and phylogenetic position of a new hypotrichous ciliate, Quadristicha subtropica n. sp. collected from a freshwater pond in southern China, were investigated. Quadristicha subtropica n. sp. is characterized as follows: size in vivo 60–115 μm × 25–45 μm; 19–21 adoral membranelles; buccal cirrus near anterior end of endoral and paroral; cirrus IV/3 at about level of buccal vertex; right marginal row begins ahead of buccal vertex; 11–16 right and 12–19 left marginal cirri; and dorsal cilia about 5 μm long. The basic morphogenetic process in Q. subtropica n. sp. is consistent with that of the type species, Quadristicha setigera. Phylogenetic analyses based on small subunit ribosomal DNA sequence data reveal that the systematic position of Q. subtropica n. sp. is rather unstable with low support values across the tree and the genus Quadristicha is not monophyletic.

Sign in / Sign up

Export Citation Format

Share Document