scholarly journals Allodiaptomus nongensis, a new diaptomid copepod (Copepoda: Calanoida) from a tributary of the Mekong River, with notes on its consumption by local people in Central Laos

2019 ◽  
Vol 78 (2) ◽  
Author(s):  
La-orsri Sanoamuang ◽  
Santi Watiroyram

A new calanoid copepod, Allodiaptomus nongensis n. sp., is herein described based on samples collected from the Xe Lanong River (a tributary of the Mekong River), and 13 other localities in Central Laos. This is the sixth species of the genus Allodiaptomus Kiefer, 1936. The other five members in the genus were recorded from India, South China, Cambodia, Thailand, and Vietnam. The features that stand out in the new species are in the male: the right caudal ramus has a large, biacuminate, conical process proximally, and the Exp-2 of the right P5 has a hook-shaped principal spine proximally. The new species is abundant in both temporary and permanent waters, but is restricted to Savannakhet Province. This Laotian endemic copepod is referred to by local people as “Pa Khayong”, which means tiny fish. Since high densities of this copepod can be found in the dry season (December until May), several man-made copepod traps are placed by local people along the river banks in Muang Nong District. Interestingly, large concentrations of individuals (body length: ~1 mm) belonging to the new species are harvested and consumed by these villagers. Additional information about this species and the copepod fisheries by local people in this area is provided herein. In this paper, the reassignment of Allodiaptomus rarus to the genus Mongolodiaptomus is proposed.

2020 ◽  
Vol 94 (5) ◽  
pp. 955-965 ◽  
Author(s):  
Lucy A. Muir ◽  
Yuandong Zhang ◽  
Joseph P. Botting ◽  
Xuan Ma

AbstractThe latest Ordovician to earliest Silurian graptolite Avitograptus avitus is important in the biostratigraphy of the Ordovician–Silurian boundary interval. Two additional species of Avitograptus are described from the sponge-dominated Anji Biota of the Upper Ordovician Wenchang Formation (Metabolograptus persculptus Biozone) of Zhejiang Province, South China. One species, Avitograptus akidomorphus new species, is new; the other, Avitograptus acanthocystus new combination, which was previously placed in Climacograptus, is herein assigned to Avitograptus. The former species may represent the ancestral akidograptid because it is identical in thecal form to Akidograptus, but differs in the development of the proximal end. The evolutionary changes from Avitograptus avitus to Akidograptus and Parakidograptus involved distal movement of the origins of th11 and th12, thecal elongation, and greater outward inclination of the thecal walls.UUID: http://zoobank.org/81c433a0-9069-48d2-ae72-1267400cbf77.


ZooKeys ◽  
2020 ◽  
Vol 911 ◽  
pp. 1-20
Author(s):  
La-Orsri Sanoamuang ◽  
Santi Watiroyram

Phyllodiaptomus (Phyllodiaptomus) roietensissp. nov. was collected from temporary water bodies in Roi Et and Nakhon Ratchasima provinces in northeastern Thailand and Kampong Thom Province in central Cambodia. The new species is closely related to Phyllodiaptomus (P.) surinensis Sanoamuang & Yindee, 2001 in that it shares common morphological characters in the males: urosomites 2–3, P5 intercoxal sclerite, right P5 Exp-2, and left P5 Exp. Minor differences on the right antennule, right caudal ramus, P5 basis and Enp exist. The females differ in their Pdg 5, genital double-somite, and P5. An updated key to the species of the genus Phyllodiaptomus Kiefer, 1936 is provided.


Zootaxa ◽  
2012 ◽  
Vol 3436 (1) ◽  
pp. 1 ◽  
Author(s):  
TAKU OKAMOTO ◽  
TSUTOMU HIKIDA

A new species of scincid lizard allied to Plestiodon japonicus (Peters, 1864) was described as P. finitimus sp. nov., fromthe eastern part of Honshu and Hokkaido, Japan. A previous DNA study reported the taxonomic status of the easternJapanese populations of Plestiodon as an undescribed species on the basis of their collective genetic distinctness from aparapatric congener P. japonicus sensu strict from the western part of mainland Japan. We present the diagnostic featuresof P. finitimus compared to P. japonicus and P. latiscutatus Hallowell, 1861, the other parapatric species occurring in theIzu Peninsula and Izu Islands of central Japan, on the basis of morphological characteristics and DNA barcode patterns.Both P. finitimus and P. japonicus have a small postnasal and large anterior loreal that contacts the supralabials. In contrast,the Izu Peninsular populations of P. latiscutatus, which had no known diagnostic features relative to the other two species,usually have a large postnasal and small anterior loreal, with the latter separated from the supralabials by the former, ormay otherwise lack a postnasal. In most populations of P. finitimus, the right and left prefrontals are usually isolated fromeach other, whereas they exhibit medial contact in most populations of P. japonicus. Although all the above characters arevariable both within and between populations, 60–90% of the specimens from each locality on mainland Japan werecorrectly identified using a combination of these characters. Based on these characters, the Russian Far East populationof Plestiodon was also identified as P. finitimus. The interspecific sequence differences in the standard DNA barcoderegion (a 658 base pair fragment of the cytochrome c oxidase subunit I gene of mitochondrial DNA) were distinct, andeach of the three species was exclusively clustered in a neighbor-joining tree. The limited hybridization among the threespecies indicated by previous studies suggests that DNA barcodes could provide a reliable key for their correctidentification. The implications for the biogeography and speciation of the three parapatric lizard species are briefly discussed.


Zootaxa ◽  
2017 ◽  
Vol 4243 (2) ◽  
pp. 329 ◽  
Author(s):  
SUKONTHIP SAVATENALINTON

A new genus, Dentocypria n. gen., in the subfamily Cyclocypridinae Kaufmann, 1900 is described from Thailand. The main distinguishing characters of the new genus are the presence of an internal tooth on the antero-ventral part of the left valve, the marginal tubercles on the right valve, the very elongated terminal segment of the madibular palp, the absence of setae on the basal segment of the second thoracopod (T2), the unusually long e-seta of T2, the short terminal segment of the third thoracopod (T3), the long Sp seta of the caudal ramus and the morphology of prehensile palps and hemipenis. Four new species of the new genus are here described: Dentocypria mesquitai n. gen. n. sp., Dentocypria chantaranothaii n. gen. n. sp., Dentocypria smithi n. gen. n. sp. and Dentocypria aequiloba n. gen. n. sp. A brief discussion on the generic characters and a key to the genera of the subfamily are provided. 


Zootaxa ◽  
2018 ◽  
Vol 4399 (2) ◽  
pp. 197 ◽  
Author(s):  
EBRAHIM SHOKOOHI ◽  
FAHIME IRANPOUR ◽  
VLADA PENEVA ◽  
MILKA ELSHISHKA ◽  
HENDRIKA FOURIE ◽  
...  

During a survey of soil nematodes in Iran, a new species of Ditylenchus Filipjev, 1936 was discovered. Ditylenchus sarvarae sp. n. is characterised by its body length (1.0–1.4 mm), lateral field with seven incisures and without areolation, long postuterine sac (1.8–2.8 times the corresponding body diameter) and conical female tail with pointed tip (68–89 μm long, c = 13.7–18.2, c' = 4.2–5.1). Male specimens have conical tails (64–70 μm long, c = 14.5–16.7, c' = 4.0–4.5), spicules (22–26 μm long) and gubernaculum (8–10 μm long). Measurements and illustrations are provided for this new species. A molecular study of the 28S rDNA region of D. sarvarae sp. n. demonstrates that the Iranian species belongs to a separate group compared with the other molecularly characterized species of genus Ditylenchus. 


Author(s):  
Mohsen M. El-Sherbiny ◽  
Hiroshi Ueda

A new species of calanoid copepod, Centropages aegypticus sp. nov. collected from the Egyptian coasts of the northern Red Sea is described. This species is unique in having two pointed conical processes on the dorsal surface of cephalosome in both sexes, female genital compound somite with irregular-surface outline of the right swelling part and transverse dorsolateral row of spinules on the left side, 2-segmented exopod of the female leg 5, asymmetrical medial processes of the female leg 5, of which the left one is longer and medially-curved and the right one with oblique row of thick spinules, and a club-shaped medial seta on the third exopodal segment of the male leg 5. The new species is similar to C. tenuiremis, but is not assigned to the same species group as the latter species or to any other groups.


Zootaxa ◽  
2010 ◽  
Vol 2491 (1) ◽  
pp. 61 ◽  
Author(s):  
THOMAS M. ILIFFE ◽  
TINA OTTEN ◽  
STEFAN KOENEMANN

Godzilliognomus schrami, a new species of the crustacean class Remipedia, Yager, 1981 is the second species assigned to the genus. The new species, with an average body length of 6.8 mm, was collected from an anchialine cave on the Bahamian island of Eleuthera. Godzilliognomus schrami can be distinguished from the other species in the genus, Godzilliognomus frondosus Yager, 1989 by narrower and less trapezoidal tergites, frontal filaments that differ regarding the shape and insertion of the medial process, and dorsal antennular rami composed of only ten segments.


2007 ◽  
Vol 47 (15) ◽  
pp. 181-186 ◽  
Author(s):  
María Fernanda Achinelly ◽  
Nora B. Camino

Blatticola cristovata n. sp. (Oxyurida, Thelastomatidae) a parasite of the cricket Anurogryllus muticus (De Geer, 1773) (Orthoptera, Gryllidae) from Argentina, is described and illustrated. This is the first species of the genus Blatticola found parasitizing cricket. This new species is characterized in females by having the cuticle annulated through the body length, the mouth opening is subtriangular and surrounded by eight cephalic papillae, the stoma is short with three pairs placed in two rows of cuticular sclerotised plates, amphids in small pore shaped, oesophagus is divided into three parts, anterior cylindrical corpus, isthmus distinct, and basal bulb valved, the nerve ring is situated around the middle of corpus, the intestine is wide broad anteriorly, oval eggs, smooth shell, with a straight side, and the other side with a band running longitudinally. Males with one pair of preanal, one pair of adanal and two pairs of postanal papillae, and the tail appendage short, conical and pointed.


Zootaxa ◽  
2013 ◽  
Vol 3599 (6) ◽  
pp. 519-534 ◽  
Author(s):  
EBRAHIM SHOKOOHI ◽  
ABDOLRAHMAN MEHRABI-NASAB ◽  
MAHDIEH MIRZAEI ◽  
VLADA PENEVA

During a survey of soil nematodes in Iran, three species of predatory nematodes, including a new species of the genus Mylonchulus Cobb, 1916 were recovered. Mylonchulus kermaniensis sp. n. is characterised by its body length (1.2–1.4 mm), six rows of rasp-like denticles, the sixth line consisting of four denticles, female tail slightly sigmoid, sharply bent ventrad with digitate posterior portion slightly but clearly bent dorsad, (37–49 μm long, c=27.9–38.9, c'=1.2–1.7) with a terminal opening of spinneret. Two advulval papillae present, one is pre-vulval and the other one is located posterior to vulva. Furthermore, two other mononchid species namely M. cf. hawaiiensis (Cassidy, 1931) Goodey, 1951 and Mononchus truncatus Bastian, 1865 were also recovered from soil in the province of Kerman, Iran, the former representing a new geographical record for Iran. Measurements and illustration are provided for these three species. Molecular study of 18S rDNA region of M. cf. hawaiiensis demonstrated that the Iranian population compared with the nearest populations identified as M. hawaiiensis from Japan, shows 5 to 8 nucleotide differences. In addition, phylogeny of Mylonchulus is discussed and a checklist of the species of Mononchida from Iran is provided.


Author(s):  
L. Liao ◽  
R. An ◽  
S. Shi ◽  
Y. Xu ◽  
Y. Luo ◽  
...  

AbstractDuring an expedition in June 2012 in Shache county of Tarim Basin in southern Xinjiang, China, a new species of the genus Dryomys (Gliridae) has been discovered and named Dryomys yarkandensis sp. nov. It has been found obviously different from D. nitedulai in northern Xinjiang, D. laniger, D. niethammeri and D. nitedulai in Europe, which are also belong to genus Dryomys. The new species Dryomys yarkandensis sp. nov is described below.HolotypeNo. N07, an adult female collected by Chen Zhenhai in June 2012, is deposited Center for disease prevention and control of Xinjiang (Xinjiang CDC). It was obtained from oasis orchard of desert in Tarim Basin (38°29’N, 77°32’E), 1211-1215 m.Genus characterThere is a dark chestnut round eye. The terminal of tail is club shape, covered with dense hairs, and cannot see the scale ring in external texture.Description of the speciesThe eyes is large. The beard is long and the longest could reach 30 mm. The tail is thicker and slightly longer than body length about 10%. The terminal of the tail is fluffy. All the surface is covered with dense hairs.External figureThe color of the new species on the back is lighter than that of D. laniger, D. niethammeri and D. nitedulai in Dryomys. The length of the tail is about 110% of the body length. The length of the ears is 12.8 mm, which is 15% shorter than the other three species of Dryomys.Skull and toothThe ratio between the length of audirory bullae and the breadth of auditory bullae is 1.66 (8.35/5.02), which is larger than the other three species of D. nitedula.The habitats of the new species is harsh, drought and hot in summer but dry and cold in winter. The habitats of D. nitedula in mountain valley in northern Xinjiang is temperate, humidity and low temperature, and there are berries or orchard.


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