A review of the genus Platyrhina (Chondrichthys: Platyrhinidae) from the northwestern Pacific, with descriptions of two new species

Zootaxa ◽  
2011 ◽  
Vol 2738 (1) ◽  
pp. 26 ◽  
Author(s):  
YUKIO IWATSUKI ◽  
KEI MIYAMOTO ◽  
KAZUHIRO NAKAYA ◽  
JIE ZHANG
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Northwestern Pacific ◽  
Nominal Species ◽  
Undescribed Species ◽  
White Pigment ◽  
Light Yellow ◽  
The Pacific ◽  
Two New Species ◽  
Pacific Species

The genus Platyrhina from the northwestern Pacific was reviewed, including a redescription and neotype proposal for Platyrhina sinensis (Bloch and Schneider 1801), and the description of two new species. Platyrhina limboonkengi Tang 1933 is relegated to the synonymy of P. sinensis, both species having two rows of hooked thorns on the mid-dorsum of the tail. Specimens previously widely identified as P. sinensis, but characterized by one row of such hooked thorns, represented an undescribed species, herein named Platyrhina tangi Iwatsuki, Zhang and Nakaya sp. nov. Platyrhina hyugaensis Iwatsuki, Miyamoto and Nakaya sp. nov., known from specimens limited primarily to the Hyuga Nada Sea, off Miyazaki, the Pacific coast of southern Japan, is similar to P. tangi in having one row of hooked thorns on the mid-dorsum of the trunk and tail, but differs in having larger hooked thorns, not encircled by light yellow or white pigment on the orbital, nape and scapular regions, and a pair of hooked thorns (absent in P. tangi) anteriorly on the scapular region. Nominal species are discussed and key to northwestern Pacific species of Platyrhina is provided.

scholarly journals Revision of sea anemone genus Epiactis (Coelenterata: Actiniaria) on the Pacific coast of North America, with descriptions of two new brooding species

1986 ◽  
Vol 64 (8) ◽  
pp. 1665-1674 ◽  
Author(s):  
Daphne Gail Fautin ◽  
Fu-Shiang Chia
Keyword(s):  
New Species ◽  
North America ◽  
Intertidal Zone ◽  
Type Species ◽  
Pacific Coast ◽  
Sea Anemone ◽  
Nominal Species ◽  
San Juan Islands ◽  
The Pacific ◽  
Two New Species

Two new species of the actiniid genus Epiactis, Epiactis lisbethae and Epiactis fernaldi, are described from the intertidal zone of the San Juan Islands, Washington, U.S.A. The sea anemone genus Cnidopus is synonymized with Epiactis, and its type species, C. ritteri, is restored to the genus in which it was originally described. Thus, four species of Epiactis are known on the Pacific coast of North America: external brooders E. prolifera (type species of the genus) and E. lisbethae, which differ in sexuality and brooding periodicity; and internal brooders E. ritteri and E. fernaldi, which differ in cnidae, sexuality, and histology. These bring the number of nominal species in the genus Epiactis to 19.

scholarly journals Description of two deep-water copepods of the genus Leptotachidia Becker from the northwestern Pacific (Harpacticoida, Pseudotachidiidae)

ZooKeys ◽  
2019 ◽  
Vol 873 ◽  
pp. 133-153
Author(s):  
Jong Guk Kim ◽  
Ok Hwan Yu ◽  
Jimin Lee
Keyword(s):  
New Species ◽  
Type Species ◽  
First Record ◽  
Northwestern Pacific ◽  
Ocean Science ◽  
Unknown Species ◽  
The Pacific ◽  
Two New Species ◽  
Thoracic Legs ◽  
Pacific Species

The monospecific genus Leptotachidia Becker, 1974 (Pseudotachidiidae Lang, 1936) was previously known only from the deep Atlantic. Female specimens of two unknown species of this genus were collected from abyssal sediments during an expedition to the northwestern Pacific on board research vessel ISABU (Korea Institute of Ocean Science and Technology) in November 2017. In this paper we describe the females of two new species, L. senariasp. nov. and L. apousiasp. nov. The new species were attributed to the genus Leptotachidia by the combination of the five-segmented female antennule, presence of the Brodskaya organ on the distal antennulary segment, and the second exopodal segments of second to fourth legs without inner setae. An outstanding character of both Pacific species is the reduced armature of thoracic legs in contrast to the type species, L. iberica Becker, 1974. In addition, the setal armature of L. senariasp. nov. and L. apousiasp. nov. is unique within the genus in that the female leg 5 of L. senariasp. nov. has six elements instead of five; and the antennary exopod of L. apousiasp. nov. bears a single seta on the proximal segment instead of two. This is the first record of Leptotachidia from the Pacific. A key to all three species of Leptotachidia is provided.

scholarly journals Two new species of Microcotyle (Monogenea: Microcotylidae) on intertidal fish from the south Pacific coast

2020 ◽  
Vol 54 (3) ◽  
pp. 283
Author(s):  
Gabriela Muñoz ◽  
Mario George-Nascimento
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Valid Species ◽  
Base Pairs ◽  
Central Chile ◽  
South Central ◽  
The Pacific ◽  
The Family ◽  
Two New Species ◽  
Intertidal Fish

Microcotyle is one of the most diverse and controversial genera within the family Microcotylidae. To date, 131 species have been described in Microcotyle; however, more than half have been transferred to other genera, and several others have poor descriptions. Therefore, less than half of all Microcotyle species may be considered valid. In Chile, two species have been recognized, and unidentified Microcotyle have been found on several littoral fish, but there has been no effort to properly identify them. In this study, two new species of Microcotyle are taxonomically described from intertidal fish of the central (33°S) and south-central (36°S) regions of Chile. In this study, Microcotyle sprostonae n. sp. (collected mainly from Scartichthys viridis in central Chile) and M. chilensis n. sp. (collected mainly from Calliclinus geniguttatus in south-central Chile) were identified based on morphological and molecular analyses (ITS2 and 18S genes). Both species of Microcotyle principally differed from one another and from other valid species in the number of testes and clamps. The two new species also differed from one another by one base pair in the ITS2 and 18S genes and differed from other species of Microcotyle by several base pairs of both genes. Intertidal fish are mostly endemic to the Pacific coast of South America, and they have a limited geographical distribution that does not overlap with the type hosts of other Microcotyle species. Therefore, the two new species described here are distinguished from other congeneric species by morphological, genetic, and biological characteristics.

TWO NEW MEXICAN ISOTOGASTRURA (COLLEMBOLA: ISOTOGASTRURIDAE)

1998 ◽  
Vol 130 (2) ◽  
pp. 195-199 ◽  
Author(s):  
José G. Palacios-Vargas ◽  
Jean-Marc Thibaud
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Atlantic Coast ◽  
New Mexican ◽  
The Pacific ◽  
Two New Species

AbstractTwo new species of Isotogastrura, one from the Pacific coast and one from the Atlantic coast, are described: Isotogastrura ahuizotli sp.nov. and Isotogastrura veracruzana sp.nov. A key for the five species known at present is included.

Two new species of Monstera (Araceae: Monsteroideae) from the Pacific slope of the Andes in Colombia

Phytotaxa ◽  
2021 ◽  
Vol 527 (2) ◽  
pp. 134-142
Author(s):  
ALEJANDRO ZULUAGA ◽  
MARCO CEDEÑO-FONSECA ◽  
MICHAEL MITTERMEIER
Keyword(s):  
New Species ◽  
Central America ◽  
Undescribed Species ◽  
The Andes ◽  
The Pacific ◽  
Two New Species ◽  
Pacific Slope ◽  
Living Material

The genus Monstera is represented in Colombia by 20 species, 12 of them from the Pacific slope of the Andes. Fieldwork between 2017 and 2019 in this region and a thorough revision of the main Colombian herbaria allowed us to discover two undescribed species belonging to Monstera section Monstera. The two new species are described and illustrated using color photographs of vegetative and reproductive features from living material, and compared to Monstera oreophila, M. epipremnoides and M. dissecta from Central America.

On two new species of Halopteris Allman, 1877 (Cnidaria: Hydrozoa) from Chile

Zootaxa ◽  
2006 ◽  
Vol 1165 (1) ◽  
pp. 57 ◽  
Author(s):  
HORIA R. GALEA
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Morphological Features ◽  
Southern Chile ◽  
The Pacific ◽  
Two New Species

Two new species of hydroids, Halopteris enersis sp.nov. and Halopteris schucherti sp.nov., from the Pacific coast of southern Chile are described and figured. Measurements and nematocyst data are provided for each species. Their morphological features are compared with those of other members of the genus, and comparative tables listing their peculiarities are presented.

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