scholarly journals Two Species of Paracalliopiidae from the Ryukyu Archipelago in Japan, with the Description of a New Species (Crustacea: Amphipoda)

2021 ◽  
Vol 26 (1) ◽  
pp. 79-91
Author(s):  
Hiroyuki Ariyama
Keyword(s):  
New Species ◽  
Ryukyu Archipelago ◽  
A New Species

A new species of Plestiodon (Squamata: Scincidae) from the Senkaku Group, Ryukyu Archipelago, Japan

Zootaxa ◽  
2017 ◽  
Vol 4254 (5) ◽  
pp. 520 ◽  
Author(s):  
KAZUKI KURITA ◽  
HIDETOSHI OTA ◽  
TSUTOMU HIKIDA
Keyword(s):  
New Species ◽  
Species Group ◽  
Morphological Features ◽  
Posterior Surface ◽  
Ryukyu Archipelago ◽  
Molecular Analyses ◽  
Conservation Implications ◽  
Island Group ◽  
A New Species

A new scincid lizard, Plestiodon takarai sp. nov., is described from the Senkaku Group, Ryukyu Archipelago, Japan. The Plestiodon lizards in this island group have previously been identified as P. elegans because they all exhibit a patch of enlarged and irregularly arranged scales on the posterior surface of their femurs. However, detailed molecular analyses revealed that the Senkaku population, although closely related to P. elegans and other species in the P. latiscutatus species group, is substantially diverged from all other recognized species. Furthermore, although the Senkaku population largely exhibits the characteristic morphological features of this species group, it can be differentiated from all recognized species by the scutellation and hatchling tail coloration. The biogeographical and conservation implications of these findings are briefly discussed. 

scholarly journals Olindias deigo sp. nov., a new species (Hydrozoa, Trachylinae, Limnomedusae) from the Ryukyu Archipelago, southern Japan

ZooKeys ◽  
2019 ◽  
Vol 900 ◽  
pp. 1-21
Author(s):  
Sho Toshino ◽  
Miyako Tanimoto ◽  
Ryo Minemizu
Keyword(s):  
Life History ◽  
New Species ◽  
Ryukyu Archipelago ◽  
Diagnostic Characters ◽  
Southern Japan ◽  
A New Species

A new hydromedusa belonging to the order Limnomedusae is reported from the Ryukyu Archipelago, southern Japan. Olindias deigosp. nov. can be distinguished from other Olindiidae species by the number and color of tentacles. Mature medusae of O. deigosp. nov. were collected to observe the life history, including polyp (hydroid) and medusa formation. A comparative table of the primary diagnostic characters of the genus is provided.

Taxonomic assessment of the termite genus Neotermes (Isoptera: Kalotermitidae) in the Ryukyu-Taiwan Island arc, with description of a new species

Zootaxa ◽  
2019 ◽  
Vol 4604 (3) ◽  
pp. 549 ◽  
Author(s):  
TOSHIHISA YASHIRO ◽  
YOKO TAKEMATSU ◽  
NAOKI OGAWA ◽  
KENJI MATSUURA
Keyword(s):  
New Species ◽  
Systematic Study ◽  
Endemic Species ◽  
Biodiversity Hotspot ◽  
Island Arc ◽  
Ryukyu Archipelago ◽  
Termite Species ◽  
Taiwan Island ◽  
Global Biodiversity ◽  
A New Species

The Ryukyu Archipelago of Japan is a recognized global biodiversity hotspot with many endemic species. However, our knowledge of the termite fauna of the Ryukyu Archipelago is insufficient. Here, we report a new species of endemic drywood termite (Kalotermitidae) from the Ryukyu Archipelago. Our systematic study of the genus Neotermes (Isoptera: Kalotermitidae) from the Ryukyu–Taiwan Island arc using molecular and morphological methods found that N. koshunensis had also been composed of a second cryptic species, N. sugioi sp. nov. These two species are distributed allopatrically in the Ryukyu–Taiwan Island arc, with the former only in Taiwan and the latter only in the Ryukyu Archipelago. Our discovery of a new drywood termite species from the Ryukyu Archipelago suggests that both morphological and molecular assessments of the species now considered to be distributed widely in the Ryukyu–Taiwan Island arc are needed to clarify the termite fauna of the Ryukyu Archipelago. [Species Zoobank registration: http://zoobank.org/urn:lsid:zoobank.org:pub:E8C9693A-E24F-445D-8445-320564565964] 

Inter- and intra-island divergence in Odorrana ishikawae (Anura, Ranidae) of the Ryukyu Archipelago of Japan, with description of a new species

Zootaxa ◽  
2011 ◽  
Vol 2767 (1) ◽  
pp. 25 ◽  
Author(s):  
MITSURU KURAMOTO ◽  
NAOKI SATOU ◽  
SHOHEI OUMI ◽  
ATSUSHI KURABAYASHI ◽  
MASAYUKI SUMIDA
Keyword(s):  
New Species ◽  
Ventral Surface ◽  
Rrna Gene ◽  
Ryukyu Archipelago ◽  
Hybrid Inviability ◽  
As Species ◽  
Morphometric Analyses ◽  
Single Clade ◽  
Gene Data ◽  
A New Species

The endangered frog, Odorrana ishikawae (Anura, Ranidae), is a species endemic to the Amami and Okinawa Islands of the Ryukyu Archipelago, Japan. Segmentation of these islands has been considered to occur middle or upper Pleistocene. Our morphometric analyses revealed obvious differences between the Amami and Okinawa populations. Two distinct morphotypes were also recognized from the Amami Island (Amami common and Amami large types). Furthermore, the Amami and Okinawa populations could be distinguished clearly by coloration and dorsal tuberculation. Based on 16S rRNA gene data, the Okinawa and Amami populations were phylogenetically separated but the genetic divergence (1.44– 2.16%) was lower than the value suggested as species threshold in anurans (> 3% in 16S). Individuals of the Amami common and large types were nested within a single clade. Artificial hybridization experiments revealed normal hybrid viability between the two Amami types, with one exception. By contrast, between Okinawa females and two Amami type males, complete hybrid inviability was observed at early embryonic stages in the hybrids contrary to expectations from their low divergence in 16S. The reciprocal hybrids between two Amami type females and Okinawa males were viable, but spermatogenesis in the hybrid males showed some degree of abnormality. These results strongly indicate specific separation of the Amami population from the Okinawa population of O. ishikawae. Thus, we describe the Amami population as a new species, which is readily distinguishable from O. ishikawae by smaller ruggedly edged dorsal spots and an immaculate ventral surface.

A distinctive new species of the alpheid genus Salmoneus Holthuis, 1955 (Crustacea: Decapoda: Caridea) from the northwestern Pacific

Zootaxa ◽  
2012 ◽  
Vol 3344 (1) ◽  
pp. 60 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
The Philippines ◽  
Northwestern Pacific ◽  
Ryukyu Archipelago ◽  
Major Cheliped ◽  
A New Species ◽  
Alpheid Shrimp

A new species of the alpheid shrimp genus Salmoneus Holthuis, 1955, S. pinguis sp. nov., is described based on the ho-lotype from Okinawa, Ryukyu Archipelago, Japan. An additional, much smaller and morphologically slightly differentspecimen from Panglao, Bohol Sea, the Philippines, is tentatively assigned to S. pinguis. sp. nov. The new species is oneof the most unusual members of Salmoneus presenting a combination of several unique characters, including the unusuallystout, plump body; the carapace strongly domed dorsally, with a broadly rounded rostrum, and without orbital teeth; thesecond abdominal pleuron conspicuously enlarged; the fourth pleuron greatly overlapping the fifth pleuron; the antennularand antennal flagella furnished with long setae; and the major cheliped comparatively small, and with the distally blunt, slightly bulbous fingertips.

A New Species of Toxorhynchites Mosquito (Diptera: Culicidae) from the Ryukyu Archipelago, Japan

1990 ◽  
Vol 27 (3) ◽  
pp. 344-355 ◽  
Author(s):  
Takako Toma ◽  
Ichiro Miyagi ◽  
Kazuo Tanaka
Keyword(s):  
New Species ◽  
Ryukyu Archipelago ◽  
A New Species
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