Two new species of Scalithrium (Cestoda: Rhinebothriidea) from rajiform batoids of the Argentine Sea

Zootaxa ◽  
2021 ◽  
Vol 5005 (1) ◽  
pp. 62-76
Author(s):  
SEBASTIAN FRANZESE ◽  
VERONICA A. IVANOV
Keyword(s):  
New Species ◽  
Vas Deferens ◽  
First Record ◽  
Generic Diagnosis ◽  
Buenos Aires Province ◽  
Specific Level ◽  
Argentine Sea ◽  
Rio Negro ◽  
Two New Species ◽  
Vaginal Sphincter

Two new species of Scalithrium Ball, Neifar & Euzet, 2003 were found in rajiform batoids of the Argentine Sea: Scalithrium kirchneri sp. nov., parasite of the Rio skate Rioraja agassizii (Müller & Henle) from waters off Buenos Aires Province, and Scalithrium ivanovae sp. nov., parasite of the La Plata skate Atlantoraja platana (Günther) from waters off Río Negro Province. Scalithrium kirchneri sp. nov. and S. ivanovae sp. nov. differ from their congeners by having a particular combination of features including: total length, number of loculi on the distal bothridial surface, absence of bilobed bothridia and number of testes. Additionally, S. kirchneri sp. nov. can be distinguished from S. ivanovae sp. nov. by the presence of a vaginal sphincter and seminal receptacle, by the position of the entrance of the vas deferens into the cirrus sac, and by the microthrix pattern on the proximal bothridial surface. Based on this and previous studies, we conclude that some morphological traits may not be considered as key characters for the generic diagnosis of Scalithrium due to their variability within the genus. These characters include the musculature disposition in bothridial transverse septa and position of the entrance of the vas deferens into the cirrus sac, which certainly complement other diagnostic characters at a specific level. The discovery of these two species represents the first record of the genus Scalithrium in temperate waters of the Southern Hemisphere. In addition, this study is the first to undoubtedly identify batoids from the order Rajiformes as hosts for Scalithrium.

Three new paramunnids (Isopoda: Asellota: Paramunnidae) from the Argentine Sea, South-west Atlantic

2016 ◽  
Vol 97 (8) ◽  
pp. 1695-1709 ◽  
Author(s):  
Brenda L. Doti
Keyword(s):  
New Species ◽  
Buenos Aires ◽  
First Record ◽  
New Combination ◽  
Buenos Aires Province ◽  
Diagnostic Characters ◽  
Argentine Sea ◽  
South West ◽  
Two New Species ◽  
Three New Species

Three new species of paramunnid isopods are described:Pentaceration pleonarietissp. nov.,Neasellus argentinensissp. nov. andN. bicarinatussp. nov. The three species were collected off Buenos Aires province, the last one was also collected off Chubut province, Argentine Sea. The species belonging toPentacerationrepresents the first record of this genus in the Argentine Sea. The diagnostic characters of the genusNeasellusare revised and besides the inclusion of the two new species herein described, a new combination for the speciesPelagogonium oculatumSchultz, 1977 is proposed.

Taxonomic notes on genus Floridotarsonemus (Acari: Tarsonemidae) with a description of two new species from West Bengal, India and keys to the world species

2021 ◽  
Author(s):  
Priyankar Mondal ◽  
Krishna Karmakar
Keyword(s):  
New Species ◽  
West Bengal ◽  
First Record ◽  
Generic Diagnosis ◽  
World Species ◽  
Artocarpus Heterophyllus ◽  
Biogeographic Province ◽  
The World ◽  
Two New Species

Two new species of Floridotarsonemus Attiah, 1970 (Acari: Heterostigmatina: Tarsonemidae), F. kukri Karmakar & Mondal sp. nov. and F. kanthali Karmakar & Mondal sp. nov. are described based on the specimens collected from Rhododendron indicum (Ericaceae), Cinchona officinalis (Rubiaceae) and Artocarpus heterophyllus (Moraceae) in Central Himalayan biogeographic province located in Darjeeling and Kalimpong district and Nadia district in the new alluvial zone of West Bengal, India. This registers the first record of Floridotarsonemus from the Indo-Malyan biogeographic realm. A note on the generic diagnosis of Floridotarsonemus and keys to differentiate the species of world Floridotarsaonemus are provided.

Contribution to the knowledge of Mainothrus (Acari, Oribatida, Trhypochthoniidae), with description of two new species from Russia and Brunei

2021 ◽  
Author(s):  
Sergey G. Ermilov
Keyword(s):  
New Species ◽  
First Record ◽  
Oribatid Mites ◽  
Identification Key ◽  
Generic Diagnosis ◽  
Sem Micrographs ◽  
Oriental Region ◽  
Two New Species

Two new species of oribatid mites of the genus Mainothrus (Oribatida, Trhypochthoniidae)—M. paratransaltaicus sp. nov. and M. davidmarshalli sp. nov.—are described on the basis of adult specimens sampled from Russia and Brunei (first record of the genus in the Oriental region). Supplementary description (SEM micrographs) for Mainothrus badius (Berlese, 1905) is presented. A revised generic diagnosis and an identification key to known species of Mainothrus are provided.

First records of Composetia, Eunereis and Nectoneanthes (Annelida: Nereididae) from Taiwan, with descriptions of two new species

Zootaxa ◽  
2018 ◽  
Vol 4531 (2) ◽  
pp. 211
Author(s):  
PAN-WEN HSUEH
Keyword(s):  
New Species ◽  
Broad Band ◽  
First Record ◽  
Generic Diagnosis ◽  
Unique Character ◽  
West Central ◽  
Two New Species

Three species of nereidids collected from various ecological surveys conducted on coasts of west central and northeastern of Taiwan are studied. Each species represents a genus in the subfamily Nereidinae Blainville, 1818 not previously reported from Taiwan: Composetia Hartmann-Schröder, 1985, Eunereis Malmgren, 1865 and Nectoneanthes Sato, 2013. Composetia budaiensis n. sp. can be distinguished from congeners by having 2–5 and 17–27 paragnaths on Areas I & III of the pharynx, respectively. Eunereis shichengensis n. sp. differs from congeners by having one shield-shaped bar on Area VI of the pharynx. The generic diagnosis of Eunereis is emended slightly to include short neuropodial heterogomph falcigers in E. shichengensis n. sp. and three other congeners. Nectoneanthes species examined in the present study showed a continuous broad band of numerous paragnaths on the oral ring of the pharynx, which agrees with the unique character of N. uchiwa Sato, 2013 and represents the first record of the species for Taiwan. A key to all known species to Eunereis are provided. 

Two new species of Sabellariidae (Annelida, Polychaeta) from the abyss of eastern Australia

Zootaxa ◽  
2020 ◽  
Vol 4821 (3) ◽  
pp. 487-510
Author(s):  
JINGHUAI ZHANG ◽  
PAT HUTCHINGS ◽  
INGO BURGHARDT ◽  
ELENA KUPRIYANOVA
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Benthic Communities ◽  
First Record ◽  
Thoracic Segment ◽  
Distal Margin ◽  
Planktonic Larva ◽  
Eastern Australia ◽  
Two New Species ◽  
Buccal Flap

In May–June 2017 an expedition on board RV ‘Investigator’ sampled benthic communities along the lower slope and abyss of eastern Australia from off Tasmania to the Coral Sea. Over 200 sabellariid specimens of the genera Phalacrostemma and Gesaia were collected during the voyage and deposited in the Australian Museum. Here we describe two new species Gesaia csiro n. sp. (4414–4436 m) and Phalacrostemma timoharai n. sp. (1013–1093 m). We did not formally describe another species of Phalacrostemma due to poor condition of the single specimen. Gesaia csiro n. sp. is the first record of the genus from Australian waters (only a planktonic larva attributed to the genus has previously been recorded), and it can be distinguished from other congeners by the smooth surface of inner paleae, distal thecae of outer paleae with long, irregular and expanded distal fringe and circled distal margin. Phalacrostemma timoharai n. sp. differs from congeners by the following combination of characters: presence of the buccal flap, absence of tentacular filament, 18–22 pairs of outer paleae, two pairs of neuropodial cirri on first thoracic segment, and only one pair of lateral lobes on second thoracic segment. Morphological descriptions are accompanied by mitochondrial cytochrome c oxidase subunit 1 (COI) and ribosomal (16S, 18S and 28S) sequence data. A key to all Australian species of sabellariids is given.

Two new species of the genus Syngastes (Copepoda, Harpacticoida, Tegastidae) from South Korea

Crustaceana ◽  
2016 ◽  
Vol 89 (4) ◽  
pp. 431-458 ◽  
Author(s):  
Jong Guk Kim ◽  
Jong Guk Kim ◽  
Tae Won Jung ◽  
Jong Guk Kim ◽  
Tae Won Jung ◽  
...  
Keyword(s):  
New Species ◽  
South Korea ◽  
First Record ◽  
Exopodal Segment ◽  
Key To Species ◽  
Korean Waters ◽  
The Family ◽  
Two New Species ◽  
Almost All

Herein two new species of the genusSyngastesMonard, 1924 are described from South Korea, with detailed descriptions and illustrations. Both new copepods,Syngastesmulticavussp. nov. andS. pseudofoveatussp. nov., have two inner setae on the first exopodal segment of P2 and P3.Syngastesmulticavussp. nov. most closely resemblesS. gibbosusBartsch, 1999 reported from Australia, as they both have a five-segmented antennule in the female. However,Syngastesmulticavussp. nov. has a rounded body outline instead of the gibbose outline observed inS. gibbosus.Syngastespseudofoveatussp. nov. resemblesS. foveatusBartsch, 1994 in almost all aspects. However, they differ clearly in the number of setae on the first exopodal segment of P2 and P3. We also provide a key to species of the genusSyngastesworldwide. The present study is the first record of the family Tegastidae in Korean waters.

First record of the snail-killing fly genus Dichetophora Rondani (Diptera: Sciomyzidae) in Korea, with descriptions of two new species

Zootaxa ◽  
2021 ◽  
Vol 5068 (1) ◽  
pp. 125-132
Author(s):  
YEONGJIN SON ◽  
SANG JAE SUH
Keyword(s):  
New Species ◽  
Korean Peninsula ◽  
First Record ◽  
First Report ◽  
Two New Species ◽  
Palearctic Species

This paper provides the first report of the snail-killing fly genus Dichetophora Rondani, 1868 on the Korean peninsula with the discovery of two new species, D. koreana sp. nov. and D. nigricorpa sp. nov. Descriptions and illustrations of the new species and keys to the Palearctic species of this genus are given.  

Neomisticius platypi n. sp. and N. variabilis n. sp. (Tylenchomorpha: Anguinidae) from dead oak trees in Japan

Nematology ◽  
2021 ◽  
pp. 1-21
Author(s):  
Natsumi Kanzaki ◽  
Hayato Masuya ◽  
Keiko Hamaguchi
Keyword(s):  
New Species ◽  
Vas Deferens ◽  
Morphological Characteristics ◽  
Platypus Quercivorus ◽  
Oak Trees ◽  
Two New Species ◽  
Previous Definition ◽  
Rectal Glands ◽  
Stylet Length ◽  
Definition Of

Summary Two new Neomisticius species, typologically and phylogenetically close to each other, are described and illustrated from dead Quercus trees and an ambrosia beetle, Platypus quercivorus. The two species share some stylet morphological characteristics, namely, they both possess a long conus occupying more than half of the total stylet length, a long crustaformeria composed of more than 160 cells (eight rows of more than 20 cells each), and a short and broad female tail with a digitate tip. They are distinguished from each other by N. variabilis n. sp. having a wide, spindle-shaped male bursa with a blunt terminus and N. platypi n. sp. having an oval bursa with a rounded terminus. In addition, the males and females of both species have three large rectal glands and the posterior end of the male testis (distal end of the vas deferens) bears three cells that seemingly function as a valve between the vas deferens and the cloacal tube. These characteristics have not been reported in other tylenchids. Currently, the genus contains only three species: the two new species and N. rhizomorphoides, which has a normal stylet with a short conus, a short crustaformeria, and lacks rectal glands and valve cells in the vas deferens. Therefore, the two new species are readily distinguished from N. rhizomorphoides and, based on the previous definition, may even represent a new genus. However, considering their phylogenetic closeness and biological similarities (e.g., association with ambrosia beetles), the generic definition of Neomisticius was emended to include these new species.

scholarly journals Redescription of Odontostilbe pulchra (Gill, 1858) (Teleostei: Characidae: Cheirodontinae), and description of two new species from the río Orinoco basin

2007 ◽  
Vol 5 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Cristina M. Bührnheim ◽  
Luiz R. Malabarba
Keyword(s):  
New Species ◽  
South America ◽  
Amazon Basin ◽  
Rio Negro ◽  
Species Inquirenda ◽  
Two New Species ◽  
Northern South America

Odontostilbe pulchra, previously considered species inquirenda in Cheirodontinae and doubtfully assigned from the río Orinoco basin, is redescribed with the rediscovery of two syntypes. Originally described to the Island of Trinidad, O. pulchra is widespread in Venezuela, the río Orinoco basin, in smaller coastal drainages of northern South America, in the Lake Valencia system, and río Essequibo basin. A punctual occurrence in the upper rio Negro, near southernmost headwaters of the río Orinoco, extends its distribution to the Amazon basin. Additionally, two new species of Odontostilbe from the río Orinoco basin are described.

Two new species of Hoplomegistidae (Acari: Mesostigmata) associated with passalid Beetles from China

2017 ◽  
Vol 22 (6) ◽  
pp. 797
Author(s):  
Xin-Feng Zhang ◽  
Tian-Ci Yi ◽  
Jian-Jun Guo ◽  
Dao-Chao Jin
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
First Record ◽  
Lateral Margin ◽  
Adult Females ◽  
The Family ◽  
Two New Species

Stenosternum cordata sp. nov. and Stenosternum bifurcata sp. nov., new to science, are described, which is the first record of Hoplomegistidae from Asia. Stenosternum cordata sp. nov. is distinguished by its heart-shaped latigynal shield with two pairs of setae along the lateral margin, and two pairs of setae along the posterior margin of the sternal shield. Stenosternum bifurcata sp. nov. is distinguished by having remarkable bifurcate corniculus, six pairs of setae on the sternal shield and three pairs setae on the latigynal shield. The family Hoplomegistidae Camin & Gorirossi, 1955 is redefined and a key to adult females of species is provided. 

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