A description of Pseudechiniscus xiai sp. nov., with a key to genus Pseudechiniscus in China

To date, only one species of Temnocephala is known from Chile, Temnocephala chilensis, and three from southern Argentina (Patagonia), namely T. chilensis, Temnocephala dionii, and Temnocephala mexicana. Here we describe a new species of Temnocephala and provide an updated description of T. chilensis based on material found on an anomuran crab (Aeglidae) from southern Chile. Additional hosts and localities are reported for both species in southern Argentina and Chile, and a diagnostic key for all species of Temnocephala hosted on Aegla and Parastacidae is included as well. In southern Chile, both T. chilensis and the new species were found on the crayfish Samastacus spinifrons and on the anomuran crabs Aegla abtao and Aegla alacalufi; in addition, the new species was found on Aegla manni, and T. chilensis on Aegla rostrata. In southern Argentina, T. chilensis and the new species were found on Aegla riolimayana and S. spinifrons. Based on their shared traits (morphology of the penial stylet, host preferences and geographic distribution), the temnocephalans hosted in Aegla are tentatively gathered into two clusters, the Chilensis and Axenos groups.

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Three new species of Sectonema Thorne, 1930 (Dorylaimida: Aporcelaimidae) from Vietnam

Nematology ◽

10.1163/15685411-00002974 ◽

2016 ◽

Vol 18 (5) ◽

pp. 517-536 ◽

Cited By ~ 1

Author(s):

Sergio Álvarez-Ortega ◽

Thi Anh Duong Nguyen ◽

Joaquín Abolafia ◽

Thi Thanh Tam Vu ◽

Michael Bonkowski ◽

...

Keyword(s):

New Species ◽

Phylogenetic Relationship ◽

Ventral Side ◽

Molecular Data ◽

Evolutionary Tree ◽

Neck Length ◽

Natural Habitats ◽

Line Drawings ◽

Close Phylogenetic Relationship ◽

Three New Species

Three new species of the genus Sectonema collected from natural habitats in Vietnam are studied, described and illustrated, including line drawings, LM and/or SEM pictures. Sectonema birrucephalum sp. n. is characterised by its 2.73-4.35 mm long body, lip region 18-20 μm broad and offset by deep constriction, odontostyle 10.0-11.5 μm long on its ventral side, 659-989 μm long neck, pharyngeal expansion occupying 63-68% of total neck length, uterus a simple tube, 221-277 μm long, pars refringens vaginae present, V = 54-56, tail short (31-43 μm, c = 85-111, c′ = 0.6-0.8) and rounded, spicules 72-75 μm long, and four or five irregularly spaced ventromedian supplements beyond the range of the spicules. Sectonema buccociliatum sp. n. is distinguished by its 2.00-2.46 mm long body, lip region offset by constriction, 19-20 μm broad and bearing perioral cilia-like structures, odontostyle 13-14 μm long at its ventral side, 530-625 μm long neck, pharyngeal expansion occupying 62-69% of total neck length, uterus a simple tube, 116-152 μm long, pars refringens vaginae present, V = 56-62, tail short (23-31 μm, c = 72-104, c′ = 0.6-0.8) and rounded, spicules 56-68 μm long, and 3-5 spaced and weakly developed ventromedian supplements beyond the range of the spicules. Sectonema ciliatum sp. n. is characterised by its 2.79-3.13 mm long body, lip region offset by constriction, 21-22 μm broad and bearing perioral cilia-like structures, odontostyle 14-15 μm long at its ventral side, 699-722 μm long neck, pharyngeal expansion occupying 60% of total neck length, uterus a simple tube, 201-244 μm long, pars refringens vaginae present, V = 52-53, tail short (33-35 μm, c = 82-92, c′ = 0.6-0.7) and rounded, spicules 70-72 μm long, and three or four spaced and weakly developed ventromedian supplements beyond the range of the spicules. Molecular data obtained for S. ciliatum sp. n. and the derived evolutionary tree show a close phylogenetic relationship with other species of the genus.

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Taxonomic description and 3D modelling of a new species of myzostomid (Annelida, Myzostomida) associated with black corals from Madagascar

Zootaxa ◽

10.11646/zootaxa.4244.2.9 ◽

2017 ◽

Vol 4244 (2) ◽

pp. 277 ◽

Cited By ~ 2

Author(s):

LUCAS TERRANA ◽

IGOR EECKHAUT

Keyword(s):

New Species ◽

Phylogenetic Analyses ◽

Three Dimensional ◽

Close Relation ◽

Ventral Side ◽

Middle Part ◽

The Body ◽

Taxonomic Description ◽

Black Corals ◽

Organ Systems

Eenymeenymyzostoma nigrocorallium n. sp. is the first species of myzostomid worm associated with black corals to be described. Endoparasitic specimens of E. nigrocorallium were found associated with three species of antipatharians on the Great Reef of Toliara. Individuals inhabit the gastrovascular ducts of their hosts and evidence of infestation is, most of the time, not visible externally. Phylogenetic analyses based on 18S rDNA, 16S rDNA and COI data indicate a close relation to Eenymeenymyzostoma cirripedium, the only other species of the genus. The morphology of E. nigrocorallium is very unusual compared to that of the more conventional E. cirripedium. The new species has five pairs of extremely reduced parapodia located on the body margin and no introvert, cirri or lateral organs. Individuals are hermaphroditic, with the male and female gonads both being located dorsally in the trunk. It also has a highly developed parenchymo-muscular layer on the ventral side, and the digestive system lies in the middle part of the trunk. A three-dimensional digital model of this worm’s body plan has been constructed whereby the external morphology and in toto views of the observed organ systems (nervous, digestive and reproductive) can be viewed on-screen: http://doi.org/10.13140/RG.2.2.17911.21923.

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A new species of Cochemiea (Cactaceae, Cacteae) from Sinaloa, Mexico

Acta Botanica Mexicana ◽

10.21829/abm127.2020.1626 ◽

2020 ◽

Author(s):

Leccinum Jesús García Morales ◽

Rodrigo Homero González González ◽

Jesús García Jiménez ◽

Duilio Iamonico

Keyword(s):

New Species ◽

Conservation Status ◽

Relevant Literature ◽

Small Population ◽

Critically Endangered ◽

Herbarium Specimens ◽

The North ◽

Hummingbird Pollination ◽

Diagnostic Key ◽

A New Species

Background and Aims: Cochemiea is a genus which currently comprises five species occurring in Mexico. It is morphologically characterized by cylindrical decumbent to prostrate stems and by a long red-scarlet zygomorphic perianth, presumably specialized for hummingbird pollination. As part ofthe ongoing taxonomic studies on the North Mexican flora, a population discovered by Thomas Linzen in 2012 in central Sinaloa (Mexico), previously identified as Mammillaria sp., actually refers to a Cochemiea species and cannot be ascribed to any of the known species of that genus. As a consequence,we here propose to describe this population as a a new species for science.Methods: The work is based on field surveys (autumn 2018 and spring 2019) in central Sinaloa, examination of herbarium specimens, and analysis of relevant literature. Its conservation status was assessed following the guidelines of the IUCN; AOO and EOO were calculated with the programGeoCAT.Key results: Cochemiea thomasii is described and illustrated from Sinaloa. The new species is morphologically similar to C. halei from which it differs by the hanging stems, the larger conical tubercles, less numerous and shorter central spines, and the ovoid fruits. A diagnostic key of the knownCochemiea species is included.Conclusions: Cochemiea thomasii is endemic to the state of Sinaloa where it occupies a small area. On the basis of the criteria B2a (geographic range) and C (small population) of IUCN, the new species can be assessed as Critically Endangered (CR) or Vulnerable (VU). Adopting the precautionary approach, Cochemiea thomasii is considered as Critically Endangered (CR).

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Six new species of Archimonocelididae Meixner, 1938 (Platyhelminthes, Proseriata) from the Pacific, with proposal of a new genus

Zootaxa ◽

10.11646/zootaxa.4965.3.6 ◽

2021 ◽

Vol 4965 (3) ◽

pp. 515-528

Author(s):

MARCO CURINI-GALLETTI ◽

ERNEST R. SCHOCKAERT

Keyword(s):

New Species ◽

New Genus ◽

South Australia ◽

Ventral Side ◽

Copulatory Organ ◽

Dorsal Side ◽

The Pacific ◽

Eastern Australia ◽

The Pacific Ocean ◽

The Caribbean

The genus Tajikacelis n. gen. is introduced for species of Archimonocelididae (Proseriata) characterized by the lack of atrial spines in the copulatory organ and by the opening of the seminal vesicles into the prostate vesicle at its ventral side. Six new species from the Pacific Ocean are ascribed to the new genus; they may be distinguished by features of the genital systems and the morphology of their copulatory stylets. T. tajikai n. sp. (type species of the new genus) and T. macrostomoides n. sp., both from eastern Australia, have a long tubular stylet. In T. macrostomoides n. sp., the stylet is more curved, bending to 180°, and has a narrower basis compared to that of T. tajikai n. sp. In T. artoisi n. sp., from Hawai’i, and T. nematoplanoides n. sp., from South Australia, the stylet is shaped as a truncated cone, with a broad, oblique proximal opening and a very short tubular part. T. artoisi n. sp. is distinct for the much stronger thickening of the dorsal side of the stylet, and for the different shape of the proximal opening. In T. acuta n. sp. and T. truncata n. sp., from West Panama, the tubular stylet is comparatively short; the two species differ for the shape of the distal opening, produced into a sharp spike in T. acuta n. sp., and square-ended in T. truncata n. sp.. Two species previously described in the genus Archimonocelis are transferred to Tajikacelis n. gen.: T. itoi Tajika, 1981 from Japan and T. keke Martens and Curini-Galletti, 1989 from Sulawesi (Indonesia). The taxonomic position of the problematic Archimonocelis glabrodorsata Martens and Curini-Galletti, 1989 from the Caribbean is discussed. The relationships of and within the genus Tajikacelis n. gen. are discussed and compared with recent results based on DNA studies.

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A new species of Cyrtodactylus Gray, 1827 (Squamata: Gekkonidae) from Malaysia including a literature survey of mensural and meristic data in the genus

Zootaxa ◽

10.11646/zootaxa.1729.1.2 ◽

2008 ◽

Vol 1729 (1) ◽

pp. 8 ◽

Cited By ~ 1

Author(s):

HERBERT RÖSLER ◽

FRANK GLAW

Keyword(s):

New Species ◽

Ventral Side ◽

Literature Survey ◽

Single Specimen ◽

Diagnostic Characters ◽

A New Species ◽

Meristic Data

We describe a new gekkonid lizard from Batang Padang, Perak province, Malaysia, based on a single specimen collected almost 100 years ago. Cyrtodactylus stresemanni sp. nov. apparently differs from all other species in the genus by large tubercles on the ventral side of the tail, suggesting an isolated position within the genus. A literature survey of meristic and mensural data of all described Cyrtodactylus species revealed further diagnostic characters to distinguish C. stresemanni from all other species.

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Adamystis thailandensis sp. nov. (Acari: Prostigmata: Adamystidae), a new species of soil mites from Thailand with a key to world species of Adamystidae

Zootaxa ◽

10.11646/zootaxa.2649.1.3 ◽

2010 ◽

Vol 2649 (1) ◽

pp. 61

Author(s):

MARUT FUANGARWORN ◽

CHARIYA LEKPRAYOON

Keyword(s):

New Species ◽

Leaf Litter ◽

Soil Layer ◽

Coastal Forest ◽

World Species ◽

Soil Mites ◽

Southern Thailand ◽

Lateral Posterior ◽

Diagnostic Key ◽

A New Species

A new species of soil prostigmatic mites, Adamystis thailandensis sp. nov. (Acari: Adamystidae) is described based on adult and immature specimens collected from leaf litter and upper soil layer in a coastal forest in southern Thailand. It differs from its congeners by the presence of a densely striated idiosomal shield and the presence of lens-like structures on the lateral, posterior dorsomedial, and ventral sides of the idiosoma. A diagnostic key to the known species of Adamystidae is presented.

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First record of the genus Empidideicus (Diptera: Bombylioidea: Mythicomyiidae) from Iran, with description of six new species

Zootaxa ◽

10.11646/zootaxa.2627.1.1 ◽

2010 ◽

Vol 2627 (1) ◽

pp. 1 ◽

Cited By ~ 1

Author(s):

BABAK GHARALI ◽

KARIM KAMALI ◽

NEAL EVENHUIS ◽

ALI ASGHAR TALEBI ◽

JAFAR KHALGANI

Keyword(s):

New Species ◽

First Record ◽

Diagnostic Key ◽

First Time

Six new species of the genus Empidideicus, E. amicus Gharali & Evenhuis, sp. nov., E. ebellicus Gharali & Evenhuis, sp. nov., E. greatheadi Gharali & Evenhuis, sp. nov., E. legulicoxa Gharali & Evenhuis, sp. nov., E. matricarius Gharali & Evenhuis, sp. nov., and E. persicus Gharali & Evenhuis, sp. nov. are described from the northern parts of Iran. A diagnostic key to Iranian species are presented. The subfamily Empidideicinae is recorded from Iran for the first time.

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On a new Temnocephala (Platyhelminthes) from Southern Patagonia (Chile, Argentina), with a redescription of T. chilensis and some systematic and biogeographical insights

Zootaxa ◽

10.11646/zootaxa.4852.3.9 ◽

2020 ◽

Vol 4852 (3) ◽

pp. 383-395

Author(s):

RODRIGO PONCE DE LEÓN ◽

ERICH H. RUDOLPH ◽

ODILE VOLONTERIO

Keyword(s):

New Species ◽

Geographic Distribution ◽

Southern Chile ◽

Host Preferences ◽

Southern Patagonia ◽

Diagnostic Key ◽

A New Species

To date, only one species of Temnocephala is known from Chile, Temnocephala chilensis, and three from southern Argentina (Patagonia), namely T. chilensis, Temnocephala dionii, and Temnocephala mexicana. Here we describe a new species of Temnocephala and provide an updated description of T. chilensis based on material found on an anomuran crab (Aeglidae) from southern Chile. Additional hosts and localities are reported for both species in southern Argentina and Chile, and a diagnostic key for all species of Temnocephala hosted on Aegla and Parastacidae is included as well. In southern Chile, both T. chilensis and the new species were found on the crayfish Samastacus spinifrons and on the anomuran crabs Aegla abtao and Aegla alacalufi; in addition, the new species was found on Aegla manni, and T. chilensis on Aegla rostrata. In southern Argentina, T. chilensis and the new species were found on Aegla riolimayana and S. spinifrons. Based on their shared traits (morphology of the penial stylet, host preferences and geographic distribution), the temnocephalans hosted in Aegla are tentatively gathered into two clusters, the Chilensis and Axenos groups.

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Senecio hortensiae (Senecioneae, Asteraceae): a new species from Espírito Santo, Brazil

Phytotaxa ◽

10.11646/phytotaxa.142.1.5 ◽

2013 ◽

Vol 142 (1) ◽

pp. 46 ◽

Cited By ~ 2

Author(s):

Aristônio Magalhães Teles ◽

Fernanda Santos Freitas

Keyword(s):

New Species ◽

Endemic Species ◽

Conservation Status ◽

Distribution Map ◽

Espírito Santo ◽

Median Part ◽

Ray Florets ◽

Diagnostic Key ◽

Espirito Santo ◽

A New Species

A new species of Senecio section Adamantina is here described as Senecio hortensiae (Senecioneae, Asteraceae), an endemic species from Parque Nacional dos Pontões Capixabas, Espírito Santo state, Brazil. This new species is recognised by the sessile leaves densely clustered at the median part of the stem and by the radiate capitula in a terminal lax panicle. It is closely related to Senecio graciellae but differs basically by the size and margins of the leaves, capitulescence and number of ray florets. Illustrations, comments, distribution map, and conservation status are provided for the new species. Additionally, a diagnostic key to the species of Senecio section Adamantina is provided.

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