A new species of sponge-inhabiting barnacle Neoacasta (Archaeobalanidae, Acastinae) in Kyushu, Japan

Crustaceana ◽  
2020 ◽  
Vol 93 (11-12) ◽  
pp. 1515-1532
Author(s):  
Meng-Chen Yu ◽  
Takefumi Yorisue ◽  
Gregory A. Kolbasov ◽  
Benny K. K. Chan

Abstract This paper describes a new species of sponge-inhabiting barnacle, Neoacasta liui sp. nov., collected in Fukuoka, Kyushu, Japan. In the present study we used both the morphological examination and DNA barcode (cytochrome c oxidase I gene) to distinguish this new species from acastine species including its congeners from Neoacasta Kolbasov, 1993. Neoacasta liui sp. nov. is similar to Neoacasta glans (Lamarck, 1818) in shell morphology, but the divergence in COI gene between them reached inter-specific differences. N. liui sp. nov. is characterized by externally latticed, narrow scutum, beak-shaped tergum with wider spur, and lack of six inwardly prominent teeth on margin of basis. N. glans having an Indo-West Pacific distribution may represent a complex of cryptic species.

ZooKeys ◽  
2021 ◽  
Vol 1016 ◽  
pp. 1-48
Author(s):  
Domingo Lago-Barcia ◽  
Marcos Santos Silva ◽  
Fernando Carbayo

Living representatives of the Neotropical genus Choeradoplana Graff, 1896 (Geoplaninae, Tricladida, Platyhelminthes) are easily recognized by the typical shape of the head which is laterally expanded, rolled-up, and ventrally provided with two glandular cushions. In this study, the morphology and phylogeny (cytochrome C oxidase subunit I gene) of several species of land planarians are taxonomically investigated. Four of the six species studied are new to science, namely: Ch. eudoxiae Silva & Carbayo, sp. nov., Ch. claudioi Lago-Barcia & Carbayo, sp. nov., Ch. onae Lago-Barcia & Carbayo, sp. nov., and Ch. riutortae Lago-Barcia & Carbayo, sp. nov. The species Choeradoplana albonigra and Ch. eudoxiae deviate from the usual body shape pattern in that the head does not present lateral expansions nor glandular cushions, becoming indistinguishable from its sister genus Cephaloflexa. Pseudogeoplana tristriata (Schultze & Müller, 1857) is also redescribed from a newly collected specimen and was discovered to be a member of Choeradoplana. Graff (1899) also studied another specimen that was considered to be conspecific with P. tristriata; however, in this new it is concluded that it is not conspecific but rather a new species. The name Pseudogeoplana aevipandemiae Lago-Barcia & Carbayo, sp. nov. is suggested for Graff’s specimen.


Zootaxa ◽  
2012 ◽  
Vol 3383 (1) ◽  
pp. 15 ◽  
Author(s):  
FRANCES S. B. HARVEY ◽  
VOLKER W. FRAMENAU ◽  
JANINE M. WOJCIESZEK ◽  
MICHAEL G. RIX ◽  
MARK S. HARVEY

A study of selected species in the nemesiid spider genus Aname L. Koch, 1873 from the Pilbara bioregion of Western Australia was undertaken using molecular and morphological techniques. Bayesian and parsimony analyses of mitochondrial sequence data from the Cytochrome c Oxidase subunit I (COI) gene found evidence for four species, confirming our initial morphological examination of adult male specimens. These four species are here described as A. mellosa n. sp., A. aragog n. sp., A. ellenae n. sp. and A. marae n. sp. Only the female of A. mellosa n. sp. is described.


ZooKeys ◽  
2021 ◽  
Vol 1070 ◽  
pp. 31-40
Author(s):  
Ju-Hyeong Sohn ◽  
Cornelis van Achterberg ◽  
Yunjong Han ◽  
Hyojoong Kim

The species of the genus Hylcalosia Fischer, 1967 (Braconidae: Alysiinae) from South Korea are revised. One species, Hylcalosia bicolorsp. nov., is new to science. They are described and illustrated herein and an identification key to the Korean species is added. In addition, the DNA barcode region of the mitochondrial cytochrome c oxidase subunit I (COI) has been analysed for the new species and H. sutchanica is used for genetic comparison.


Zootaxa ◽  
2021 ◽  
Vol 5048 (1) ◽  
pp. 135-140
Author(s):  
DEVKANT SINGHA ◽  
ABHISHEK PATIDAR ◽  
VIKAS KUMAR ◽  
KAOMUD TYAGI

Mycterothrips nainiae sp. n. (Thripinae) is described and illustrated from India, and one genus and species, Paithrips circularis Nonaka and Jangvitaya, is newly recorded from India. A key to species of Mycterothrips from India is also provided. The DNA barcode data using partial mitochondrial cytochrome c oxidase subunit I (mtCOI) from the holotype also five sequences of Paithrips circularis were generated.  


2013 ◽  
Vol 14 (3) ◽  
pp. 113-121
Author(s):  
Madhu Thapliyal ◽  
Bipin Kumar Sati ◽  
Ravi Kumar ◽  
Tribhuwan Chandra ◽  
Ashish Thapliyal

The entire Himalayan region is well known as a global hotspot for biodiversity. Many workers have documented different aspect of biodiversity.  The Uttarakhand Himalaya region, a part of Himalayan system, is very rich in fresh water aquatic biodiversity because it has many fresh water streams and rivers within a short distance of 200 miles. All these fresh water bodies harbor diverse aquatic fauna with fishes being the most extensively studied. There are many fish species reported by many authors in Uttarakhand. Many of the fishes have similar morphological characters (morpho-metrics) and are difficult to identify. Attempts have been made to generate the DNA barcode of fishes but most of the attempt are limited to major rivers i.e. the Ganges and the Yamuna. Besides these two prominent river (the Ganges & the Yamuna), there are many supporting streams and small tributaries that are also inhabited by many species. No “long term” and “entire river scan” for fish species has ever been conducted in Uttarakhand. Our research aims to generate a molecular database (DNA Barcode) for entire fish species fauna in each small river/stream of Uttarakhand.  Using a combination of morphometric & DNA bar-coding data will provide an efficient method for species level identification and contributes considerably to taxonomic and biodiversity research. The present study is first step towards establishing molecular taxonomy database of Uttarakhand based upon the bar coding pattern of cytochrome c oxidase I (COI) gene.  We carried out an “entire river scan” of River Song (a tributary of river Ganges).  50 samples were collected from various sampling sites along the entire stretch of river and analyzed.   Data was uploaded into the BOLD database and the analysis of data using this database suggests that the genetic variability (K2P distance) distribution of 50 individuals belonging with 15 species.The average intraspecific variation using K2P and NJ methods/models was assessed. The mean intraspecific distance was less than 1.45% for 32% of species. Mean K2P distance within species, genus and family was 0.1%, 16.3% and 21.70% respectively. Our results suggest that River Song has diverse fish fauna with substantial genetic diversity.  Data from Barillius species suggests that this species has a very high variation.  There is ahighly probability that as all the rivers are scanned new data on endemic and exotic fish fauna diversity will emerge which would be helpful in conservation efforts.


Zootaxa ◽  
2021 ◽  
Vol 4948 (4) ◽  
pp. 546-558
Author(s):  
NAMIKI KIKUCHI ◽  
KAZUHIKO KONISHI

The Japanese species of the genus Linycus Cameron are examined with two species recognized. A Holarctic species, L. exhortator (Fabricius) is newly collected from Japan [Hokkaido, Honshû, Shikoku, Kyûshû], and a new species, L. kyoheii sp. nov., is described from Yamanshi Pref., Honshû. The two Japanese species can be distinguished by a white spot on scutellum (present in L. kyoheii vs. absent in L. exhorator), and sculpture of area between gastrocoeli (weakly rugose-punctate in L. kyoheii vs. clearly rugose in L. exhortator). We also compared the Cytochrome c oxidase subunit I (CO1) of Japanese L. exhortator with European L. exhortator. The p-distances between Japanese and European subspecies exhortator were about 2%, whereas between Japanese and Nearctic ssp. thoracius (Cresson) were about 5%. Here we provisionally treat Japanese L. exhorator as nominotypical subspecies. The intra-specific DNA barcode divergence and allopatric color variations are discussed. 


Zootaxa ◽  
2019 ◽  
Vol 4664 (3) ◽  
pp. 434-440
Author(s):  
WEN-TAO LI ◽  
ALEXEY V. SOLOVYEV ◽  
HOU-SHUAI WANG

Polyphena chongzuoensis sp. nov. is described from China, as the twelfth species of Polyphena Solovyev, 2014. This new species is morphologically similar to P. bana (Cai, 1983), but differs in male genitalia from the latter by short spurs of anellus and aedeagus without obvious apical processes. Male adult and its genitalia are illustrated. The new species is supported molecularly by the analysis of pairwise genetic distances from a 658 bp of the mitochondrial cytochrome c oxidase subunit I gene, with the minimum distance value of 6.4% from its allied species P. annae. 


2020 ◽  
Vol 40 (6) ◽  
pp. 795-807 ◽  
Author(s):  
Akari Yoshimoto ◽  
Takeya Moritaki ◽  
Nobuhiro Saito ◽  
Kaori Wakabayashi

Abstract An ascothoracidan crustacean of the genus DendrogasterKnipowitsch, 1890 (Dendrogasteridae), known for more than 80 years to infect the sea star Certonardoa semiregularis (Müller & Troschel, 1842) and previously identified as Dendrogaster ludwigiLe Roi, 1905, is described as a new species on the basis of recently collected specimens from Mie and Yamaguchi Prefectures, Japan. Dendrogaster adhaerensn. sp. was found within the coelomic cavity of the arms of its host sea star. Partial sequences of the cytochrome c oxidase subunit I (COI) gene show that the specimens from both localities are conspecific. This new species was also confirmed to be morphologically distinct from Dendrogaster sp. cf. ludwigi infecting Echinaster luzonicus (Gray, 1842), which has also been confused with D. ludwigi. The new species differs from all of its congeners in the anastomosis of the posterior primary branches and its adhesion to the inner body wall of the host.


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