Tokorhabditis n. gen. (Rhabditida, Rhabditidae), a comparative nematode model for extremophilic living

AbstractLife in extreme environments is typically studied as a physiological problem, although the existence of extremophilic animals suggests that developmental and behavioral traits might also be adaptive in such environments. Here, we describe a new species of nematode, Tokorhabditistufae, n. gen., n. sp., which was discovered from the alkaline, hypersaline, and arsenic-rich locale of Mono Lake, California. The new species, which offers a tractable model for studying animal-specific adaptations to extremophilic life, shows a combination of unusual reproductive and developmental traits. Like the recently described sister group Auanema, the species has a trioecious mating system comprising males, females, and self-fertilizing hermaphrodites. Our description of the new genus thus reveals that the origin of this uncommon reproductive mode is even more ancient than previously assumed, and it presents a new comparator for the study of mating-system transitions. However, unlike Auanema and almost all other known rhabditid nematodes, the new species is obligately live-bearing, with embryos that grow in utero, suggesting maternal provisioning during development. Finally, our isolation of two additional, molecularly distinct strains of the new genus—specifically from non-extreme locales—establishes a comparative system for the study of extremophilic traits in this model.

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Mimaporia, a new genus of Epicopeiidae (Lepidoptera), with description of a new species from Vietnam

Zootaxa ◽

10.11646/zootaxa.4254.5.3 ◽

2017 ◽

Vol 4254 (5) ◽

pp. 537 ◽

Cited By ~ 5

Author(s):

CHIA-HSUAN WEI ◽

SHEN-HORN YEN

Keyword(s):

New Species ◽

New Genus ◽

Sequence Data ◽

Phylogenetic Analyses ◽

Taxonomic Status ◽

Sister Group ◽

Morphological Evidence ◽

New Taxon ◽

The Family ◽

A New Species

The Epicopeiidae is a small geometroid family distributed in the East Palaearctic and Oriental regions. It exhibits high morphological diversity in body size and wing shape, while their wing patterns involve in various complex mimicry rings. In the present study, we attempted to describe a new genus, and a new species from Vietnam, with comments on two assumed congeneric novel species from China and India. To address its phylogenetic affinity, we reconstructed the phylogeny of the family by using sequence data of COI, EF-1α, and 28S gene regions obtained from seven genera of Epicopeiidae with Pseudobiston pinratanai as the outgroup. We also compared the morphology of the new taxon to other epicopeiid genera to affirm its taxonomic status. The results suggest that the undescribed taxon deserve a new genus, namely Mimaporia gen. n. The species from Vietnam, Mimaporia hmong sp. n., is described as new to science. Under different tree building strategies, the new genus is the sister group of either Chatamla Moore, 1881 or Parabraxas Leech, 1897. The morphological evidence, which was not included in phylogenetic analyses, however, suggests its potential affinity with Burmeia Minet, 2003. This study also provides the first, although preliminary, molecular phylogeny of the family on which the revised systematics and interpretation of character evolution can be based.

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F.L. de Castelnau’s collection of fishes from the Cape of Good Hope described by Pieter Bleeker

Zootaxa ◽

10.11646/zootaxa.4938.4.3 ◽

2021 ◽

Vol 4938 (4) ◽

pp. 421-442

Author(s):

BARRY C RUSSELL ◽

MARTIEN J P VAN OIJEN

Keyword(s):

New Species ◽

New Genus ◽

Taxonomic Status ◽

Valid Species ◽

Cape Of Good Hope ◽

Seriola Lalandi ◽

Almost All ◽

Critical Translation

The Dutch ichthyologist Pieter Bleeker described 34 species, including a new genus and five new species from a collection of fishes sent to him from the Cape of Good Hope by the French explorer, naturalist and diplomat, F.L. de Castelnau in 1858. A careful search of the Naturalis collection in Leiden found almost all the specimens received by Bleeker from Castelnau, including hitherto unrecognised types. Based on examination of this collection and a critical translation of Bleeker’s 1859 paper on the fishes of the Cape of Good Hope it has been possible to resolve the taxonomic status of Bleeker’s genus Pagrichthys (Pagrichthys castelnaui Bleeker, 1859, type by monotypy), previously considered a synonym of Sparus Linnaeus, 1758 but here regarded as a synonym of Lithognathus Swainson, 1839. The identity of the various species described by Bleeker, and type status of his new species are clarified: Cantharus castelnaui Bleeker, 1859 is a synonym of Pachymetopon blochii (Valenciennes, 1830); Pagrichthys castelnaui Bleeker, 1859 is a synonym of Lithognathus lithognathus (Cuvier, 1829); Seriola capensis Bleeker, 1859 (not previously recognised as a valid species) is a synonym of Seriola lalandi Valenciennes, 1833; Clinus dubuis Bleeker, 1859 (based on a misspelling of Castelnau’s ms name dubius) is a valid name, and a synonym of Clinus superciliosus (Linnaeus, 1758); and Clinus dorsalis Bleeker, 1859 is valid as Muraenoclinus dorsalis (Bleeker, 1859).

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A rare case of an evolutionary late and ephemeral biomineralization: tunicates with composite calcareous skeletons

Journal of Paleontology ◽

10.1017/jpa.2019.109 ◽

2020 ◽

Vol 94 (4) ◽

pp. 748-757

Author(s):

Jobst Wendt

Keyword(s):

New Species ◽

New Genus ◽

Lower Jurassic ◽

Late Triassic ◽

Cambrian Explosion ◽

New Order ◽

Colonial Ascidian ◽

New Family ◽

The Family ◽

Almost All

AbstractIn contrast to almost all other invertebrate phyla that constructed biomineralized skeletons during the “Cambrian explosion” and maintained them during the entire fossil record, ascidian tunicates evolved this protective and stabilizing advantage only during the Permian, although soft-bodied representatives of this subphylum made their first appearance already in the early Cambrian. It remains enigmatic why these compound calcareous skeletons persisted only until the Late Triassic, subsequently followed by less-rigid internal skeletons from the Lower Jurassic onwards, which consist of scattered isolated spicules only. In addition to recently described aragonitic ascidian exoskeletons from the Permian and Triassic, new discoveries of similar, but colonial ascidian compound endoskeletons in the lower Carnian exhibit a short-living branch of this group, which moreover contain the first indubitable calcareous spicules. The latter are embedded in the solid endoskeleton, which is composed of polygonal aragonitic plates with smooth outer and zigzag lined inner boundaries. They consist of irregular, parallel (orthogonal), or fan-shaped (clinogonal) arrangements of acicular aragonite crystals. The following taxa are described as new: order Cassianomorpha new order with the family Cassianosomidae new family and the genus Toscanisoma new genus with the species T. multipartitum new species and T. triplicatum new species.UUID: http://zoobank.org/03555353-cdab-42e8-8e99-9bfce15fa249

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Phylogeny and description of Eknomia, a morphologically unusual new genus of Neotropical Cryptinae (Hymenoptera, Ichneumonidae), with three new species

Zootaxa ◽

10.11646/zootaxa.3237.1.3 ◽

2012 ◽

Vol 3237 (1) ◽

pp. 35 ◽

Cited By ~ 4

Author(s):

BERNARDO F. SANTOS ◽

ALEXANDRE P. AGUIAR

Keyword(s):

New Species ◽

New Genus ◽

Sister Group ◽

Morphological Characters ◽

Dorsal Valve ◽

Southern Brazil ◽

Distinct Genus ◽

Three New Species ◽

Equal Weighting

The Cryptini Eknomia Santos et Aguiar gen. nov. is proposed, described, and cladistically compared with representativespecies of 40 outgroup genera from twelve cryptine subtribes. A total of 98 morphological characters were evaluated. Allanalyses, conducted in TNT under implied and equal weighting, clearly suggest that Eknomia is a monophyletic groupand can be treated as a distinct genus. Its likely sister group, however, varied among different analyses and could not beascertained. The relationships of the new genus are therefore unclear, and because of this it is not assigned to any of thecurrently recognized subtribes. Eknomia can be diagnosed mainly by the anterior transverse carina of propodeum entirelyabsent; propodeum more or less uniformly strigate; clypeus almost entirely flattened; ovipositor stout, with compressed,minutely serrate flange at apex of dorsal valve, subapically crossed by a subvertical line; first metasomal spiracle placedat tergite midlength or nearly so; and hind margin of metanotum with tooth-like projections. The species E. nigra Santoset Aguiar, sp. nov., E. rubra Santos et Aguiar, sp. nov. and E. propodeator Santos et Aguiar, sp. nov. are described and illustrated. The genus is recorded from Colombia to southern Brazil.

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Phylogenetic analysis of the genus Corotoca, with description of a new genus and species from Brazil (Coleoptera, Staphylinidae, Aleocharinae)

Insect Systematics & Evolution ◽

10.1163/1876312x-bja10005 ◽

2020 ◽

pp. 1-45

Author(s):

Bruno Zilberman

Keyword(s):

Phylogenetic Analysis ◽

New Species ◽

Species Identification ◽

New Genus ◽

Cladistic Analysis ◽

Sister Group ◽

Exhaustive Search ◽

New Genus And Species ◽

A New Species

Corotoca is a strictly Neotropical genus of termitophilous beetles associated with termites of genus Constrictotermes. A cladistic analysis based on 13 terminal taxa and 60 characters (57 morphological and three behavioral) was conducted. The exhaustive search with equally weighted characters resulted in two most parsimonious trees with 95 steps. Spirachtha is proposed to be the sister group of the monophyletic “subgroup Corotocae” (Corotoca + Cavifonexus gen. nov.), based on eleven synapomorhphies (ten exclusive and one homoplastic). The monophyly of Corotoca is supported here, including six species associated with Constrictotermes cyphergaster: (Corotoca hitchensi sp. nov + (C. melantho + C. pseudomelantho sp. nov.) + ((C. fontesi + (C. phylo + C. araujoi)). A new genus, Cavifronexus gen. nov., is proposed to two species associated with Constrictotermes cavifrons (Holmgren, 1910): Cavifronexus guyanae comb. nov., from Guyana and Brazil, previously described as Corotoca; and a new species, Cavifronexus papaveroi sp. nov., from Brazil. This work also includes descriptions, redescriptions, and illustrations for all species and genera. Keys for genera and species identification in “subgroup Corotocae” are also provided.

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On Putaoa, a new genus of the spider family Pimoidae (Araneae) from China, with a cladistic test of its monophyly and phylogenetic placement

Zootaxa ◽

10.11646/zootaxa.1792.1.1 ◽

2008 ◽

Vol 1792 (1) ◽

pp. 1 ◽

Cited By ~ 7

Author(s):

GUSTAVO HORMIGA ◽

LIHONG TU

Keyword(s):

New Species ◽

Type Species ◽

New Genus ◽

Sister Group ◽

Morphological Characters ◽

New Combination ◽

Sister Group Relationship ◽

Parsimony Analysis ◽

Phylogenetic Placement

The spider genus Putaoa new genus (Araneae, Pimoidae) is described to place two species of pimoids from China, Putaoa huaping new species (the type species) and P. megacantha (Xu & Li, 2007) new combination. Parsimony analysis of morphological characters provides support for the monophyly of Putaoa and for its sister group relationship to the genus Weintrauboa Hormiga, 2003 and corroborates the monophyly of Pimoidae.

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Inti (Hymenoptera: Eulophidae) a peculiar new genus from tropical America

Zootaxa ◽

10.11646/zootaxa.2729.1.5 ◽

2019 ◽

Vol 2729 (1) ◽

pp. 58

Author(s):

CHRISTER HANSSON

Keyword(s):

New Species ◽

Costa Rica ◽

Dominican Republic ◽

New Genus ◽

Sister Group ◽

Sister Group Relationship ◽

Tropical America ◽

Relationship Of ◽

The Relationship ◽

One New Species

Inti gen. nov. (Hymenoptera: Eulophidae: Entedoninae), is described from Costa Rica and the Dominican Republic, and includes one new species, I. levis sp. nov. The new genus is characterized by four autapomorphies, and the possession of an additional 14 synapomorphies. Inti is compared to the Australian genus Horismenoides Girault with which it shares the most apomorphies, indicating a possible sister-group relationship. The relationship of Inti to the tribe Euderomphalini and to other groups in the subfamily is discussed briefly.

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Tazarcus, a new phylogenetically unplaced genus of two flightless weevils with metapleural ridge from the Eastern Arc Mountains, Tanzania (Coleoptera: Curculionidae: Molytinae)

Zootaxa ◽

10.11646/zootaxa.4766.3.2 ◽

2020 ◽

Vol 4766 (3) ◽

pp. 421-434

Author(s):

VASILY V. GREBENNIKOV

Keyword(s):

New Species ◽

Dna Sequences ◽

New Genus ◽

Forest Litter ◽

Sister Group ◽

Longitudinal Ridge ◽

Incertae Sedis ◽

Multiple Origins ◽

Eastern Arc ◽

Unidentified Species

This paper reports new flightless forest litter weevils discovered in Tanzania. They are classified into two species of the genus Tazarcus gen. nov.: T. aeaea sp. nov. (the type species; from South Pare and West Usambara) and T. ogygia sp. nov. (Rubeho). Both new species inhabit the archipelago-type Eastern Arc Mountain rainforests renowned for the high diversity of their biota. Adults of Tazarcus are recognizable by their relatively small size (length of pronotum and elytra in dorsal view 2.0–3.4 mm), the short and straight rostrum covered dorsally with dense velvety pilosity, an antennal funicle with seven segments, a prosternal canal, procoxae separated, a lack of hind wings and effaced elytral shoulders. Remarkably, adults of Tazarcus possess a short longitudinal ridge on each metapleuron, which bears a line of serration likely homologous to sclerolepidia. A phylogenetic analysis of 72 terminals and 3134 aligned positions from one mitochondrial and two nuclear ribosomal fragments corroborated the monophyly of the new genus, of both new species and of all three sampled populations but did not identify the sister group of Tazarcus. Three other weevil taxa with adults possessing a similarly shaped metapleural ridge (the African Thrombosternus Marshall and Allocycloteres Voss and an unidentified species of Molytinae from Madagascar) did not cluster with Tazarcus, suggesting multiple origins of this structure. Tazarcus is taxonomically classified as incertae sedis in a non-monophyletic subfamily “Molytinae”. Images and DNA sequences of all 72 herein analysed specimens are available online at dx.doi.org/10.5883/DS-VGDS011.

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Asiorrhina, a new Oriental genus of Lygistorrhinidae (Diptera: Sciaroidea) and its phylogenetic position

Zootaxa ◽

10.11646/zootaxa.2295.1.4 ◽

2009 ◽

Vol 2295 (1) ◽

pp. 31-45 ◽

Cited By ~ 8

Author(s):

VLADIMIR BLAGODEROV ◽

HEIKKI HIPPA ◽

JAN ŠEVČÍK

Keyword(s):

New Species ◽

Type Species ◽

New Genus ◽

Sister Group ◽

Systematic Position ◽

Monophyletic Group ◽

Phylogenetic Position ◽

Fossil Genus ◽

A New Species

A new genus of Lygistorrhinidae, Asiorrhina gen. n., and a new species, Asiorrhina parasiatica sp. n., are described. Asiorrhina asiatica (Senior-White) comb. n. is redescribed and selected as the type species for the new genus. The systematic position of the new genus is discussed. All recent taxa of Lygistorrhinidae form a monophyletic group with the fossil genus Palaeognoriste Meunier as the sister group.

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Lophiobrycon weitzmani, a new genus and species of glandulocaudine fish (Characiformes: Characidae) from the rio Grande drainage, upper rio Paraná system, southeastern Brazil

Neotropical Ichthyology ◽

10.1590/s1679-62252003000100002 ◽

2003 ◽

Vol 1 (1) ◽

pp. 11-19 ◽

Cited By ~ 16

Author(s):

Ricardo M. C. Castro ◽

Alexandre C. Ribeiro ◽

Ricardo C. Benine ◽

Alex L. A. Melo

Keyword(s):

New Species ◽

Standard Length ◽

New Genus ◽

Rio Grande ◽

Sister Group ◽

Southeastern Brazil ◽

Sister Group Relationship ◽

New Genus And Species ◽

Dorsal Fin ◽

Adipose Fin

A new genus and species of glandulocaudine, Lophiobrycon weitzmani, is described based on specimens collected in headwater tributary streams of the rio Grande, upper rio Paraná system, State of Minas Gerais, southeastern Brazil. The inclusion of the new species in the phylogeny of the subfamily Glandulocaudinae proposed by Weitzman & Menezes (1998), reveals a sister group relationship between the new genus and the monophyletic group composed of Glandulocauda and Mimagoniates that currently form the tribe Glandulocaudini. The new species can be readily distinguished from all other species of the tribe by the autapomorphic presence in adult male individuals (with more than 23.9 mm standard length) of an adipose-fin whose base extends for almost the entire distance between the posterior terminus of the base of the dorsal fin and the base of the upper lobe of the caudal fin and averages approximately 25% standard length, along with the presence of globular expansions formed by the lepidotrichia and hypertrophied soft tissue in the middle portions of the first and second pectoral-fin rays. The diagnosis of the tribe Glandulocaudini is modified to accommodate the new genus.

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