scholarly journals Haimormus shimojiensis, a new genus and species of Pseudozeuxidae (Crustacea: Tanaidacea) from a submarine limestone cave in Northwestern Pacific

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4720 ◽  
Author(s):  
Keiichi Kakui ◽  
Yoshihisa Fujita

We establish a new pseudozeuxid genusHaimormusgen. nov. based on a new speciesHaimormus shimojiensissp. nov. which was collected from a submarine limestone cave with the entrance at 35 m depth, in the Northwestern Pacific Ocean.H. shimojiensisdiffers from the other confamilial members,Pseudozeuxo belizensisSieg, 1982 andCharbeitanais spongicolaBamber & Bird, 1997, in having the pleonite 1 without the pleopod, the pereopods 2 and 3 propodus with a ventral spiniform seta, and the pereopods 4–6 propodus with one long and two short dorsodistal setae. A key to females of species of Pseudozeuxidae is presented. This is the first tanaidacean report from submarine caves around Japan.

Zootaxa ◽  
2020 ◽  
Vol 4878 (2) ◽  
pp. 322-334
Author(s):  
CHENGCHENG SHEN ◽  
DONGSHENG ZHANG ◽  
BO LU ◽  
CHUNSHENG WANG

In this article we report on a hexactinellid sponge new to science, Tretopleura weijicus sp. nov., which was collected from the Weijia Seamount in the northwestern Pacific Ocean at a depth of 1995 m. Its blade-like and branching body form, the primary choanosomal framework consisting of multiaxial longitudinal strands without synapticula, and the presence of sceptrules suggest placement within the family Uncinateridae Reiswig, 2002, which is also supported by molecular phylogenetic evidence from COI and 16S sequences. The absence of swollen dermal spurs or regular pentactins and the presence of two types of discohexasters characterize it as a new species. More specimens should be collected to revise the generic characters.


2021 ◽  
Vol 775 ◽  
pp. 1-14
Author(s):  
Sergei E. Tshernyshev

A new genus with a new species of soft-winged flower beetle, Pectotibialis paghmanensis Tshernyshev gen. et sp. nov. are described from Afghanistan. The new genus can be distinguished from the congeners of the tribe Apalochrini by the dark pectination in the apices of tibiae in both sexes, and the anterior tibiae which are hollowed at distal half, flattened and rounded femora, bituberculate basal parts of head and pronotum, two lamellate metathoracic appendages, tarsal comb above second tarsomere of anterior legs, and serrate antennae in the male. Based on the metathoracic appendages and comb in anterior legs would attribute this new species to the new genus Dromanthomorphus Pic, 1921, but all the other above-mentioned characters define its independent status and the designation of a new genus; Pectotibialis Tshernyshev gen. nov. The external appearance, special male characters and genitalia of the type species of the new genus are illustrated, and a distribution map is provided. A key to the Apalochrus-section of the tribe Apalochrini is provided.


2019 ◽  
Vol 28 (2) ◽  
pp. 238-248
Author(s):  
N.P. Sanamyan ◽  
K.E. Sanamyan

Tetracoelactis ioran gen. et sp. nov. is described from abyssal depths of the NW Pacific and assigned to the family Exocoelactinidae. The genus is unique in having of only four meristematic zones, the lowest number among all species of Actiniaria.


1993 ◽  
Vol 67 (5) ◽  
pp. 899-901 ◽  
Author(s):  
Fred E. Clark

A suite of over 70 samples recovered from the tropical southwest Pacific Ocean and selected from the collection of Scripps Institution of Oceanography (SIO) has been the basis of this author's current research. In the course of studying the Recent benthic foraminiferal faunas from these samples, a new species, also referable to a new genus, was identified in six of the samples.


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