Species of the Maera-clade collected from Japan. Part 4: addenda to genera Maera Leach, 1814 and Quadrimaera Krapp-Schickel & Ruffo, 2000, with revised keys to Japanese species of the clade (Crustacea: Amphipoda: Maeridae)

Zootaxa ◽  
2020 ◽  
Vol 4885 (3) ◽  
pp. 336-352
Author(s):  
HIROYUKI ARIYAMA ◽  
MASAFUMI KODAMA ◽  
KO TOMIKAWA

Two new species of Maera Leach, 1814 and Quadrimaera Krapp-Schickel & Ruffo, 2000 included in the Maera-clade are described from Japan. Maera denticoxa sp. nov. was collected from Iwate and Hokkaido Prefectures and can be distinguished from its congeners by the small notches on the posteroventral margins of coxae 1–6. Quadrimaera angulata sp. nov. from north of Tanegashima Island in Kagoshima Prefecture is characterized by the distal tooth on the mandibular palp article 1, the rounded palm of the female gnathopod 2, and the angular posterodistal margin of the pereopod 7 basis. Keys to Japanese species of the Maera-clade are provided. In total, seventeen species included in the clade occur in Japan. 

Zootaxa ◽  
2021 ◽  
Vol 4970 (1) ◽  
pp. 119-130
Author(s):  
HIROKI YOSHINO ◽  
YURIKO KAMBARA ◽  
SHOTA KAJIWARA ◽  
TAKESHI A. OHSAWA

A new marine Sargassum-boring species of Limnoria (Limnoriidae) is described on the basis of specimens obtained at Kamogawa-shi, Chiba Prefecture, Japan. Limnoria aspera sp. nov. shares a reduced mandibular palp to a seta, algal-feeding, and the clavate shaped epipod of the maxilliped with the other species of non-mandibular-palp group. L. aspera sp. nov. differs morphologically from the congeneric species by secondary unguis of pereopods and unique carinae of pleonite 5 and pleotelson. We describe the sequences of the mitochondrial COI gene and the nuclear 28S rDNA gene. L. aspera sp. nov. differs by 14.2–18.0% in p-distance based on COI sequences from other Japanese species, L. furca and L. nagatai. 


Zootaxa ◽  
2012 ◽  
Vol 3455 (1) ◽  
pp. 61 ◽  
Author(s):  
HAI-TAO SUN ◽  
YU-ZHOU DU

Klapálek (1907) established Kamimuria as a subgenus of Perla, but later elevated it to generic rank (Klapálek 1912). Later, Klapálek (1923) designated Perla tibialis Pictet, 1841, a Japanese species, as the type species. Uchida & Isobe (1991) designated a neotype for K. tibialis and resurrected K. uenoi Kohno from synonymy. Sivec et al. (1988) redescribed the diagnostic characters of Kamimuria in reference to other Perlinae. It is a genus widespread in the Palaearctic and Oriental Regions, being particularly diverse in China. A total of 76 species have been described over the worldwide and includes 45 species residing in China (DeWalt et al. 2011, Sivec & Stark 2008, Sivec et al. 1988, 1997, Du et al. 1999, 2001, Du & Ran 2002, Du & Sivec 2004, 2005, Du & Wang 2005, 2007, Du 2006, Wu 1938, 1962, 1973). The type material of many species proposed by Wu (1935, 1936, 1938, 1940, 1947–1948) were lost because of the war, but for some species he designated neotypes (1962) which were deposited in the Institute of Zoology, Academia Sinica. Based on adult male morphology, two new species from China are described, and K. cheni Wu and K. Chungnanshana Wu are redescribed in this paper. The types of new species are deposited in the Insect Collection of Yangzhou University, Jiangsu, China.


Acarologia ◽  
2018 ◽  
Vol 58 (2) ◽  
pp. 414-429
Author(s):  
Y. Saito ◽  
Y. Sato ◽  
A.R. Chittenden ◽  
J.-Z. Lin ◽  
Y.-X. Zhang

We provided a new diagnosis of the genus Stigmaeopsis. Then we described two new species that are very closely related to Stigmaeopsis miscanthi (Saito) from Miscanthus spp. in Japan and China. The Japanese species, named Stigmaeopsis sabelisi Saito and Sato n. sp., was previously referred to as Stigmaeopsis miscanthi low aggressiveness form , and is characterized by its low male-to-male aggression behavior. The other species, Stigmaeopsis continentalis Saito and Lin n. sp., was found in China (Fujian district). Thus four species could be discriminated from the species inhabiting Miscanthus and reed grasses. However, the two new species and S. miscanthi resemble each other very closely, thus they are considered to be sibling species. To identify them several naive characters, geographic distribution and genetic data are needed. An updated key to all known species of Stigmaeopsis is also proposed.


Zootaxa ◽  
2021 ◽  
Vol 4938 (5) ◽  
pp. 581-587
Author(s):  
PAWEŁ JAŁOSZYŃSKI

Ten species of Cephennomicrus are currently known to occur in Japan, predominantly in the Ryūkyū Archipelago. These extremely small beetles (adults of Japanese species do not exceed 1.2 mm) are rarely collected, and their true diversity may be in fact much greater. Two more species are described in the present study: C. aji sp. n. inhabiting Okinawa island, and C. ushimanus sp. n. found on Amami Ôshima island. Cephennomicrus aji has the smallest adults of all Japanese Scydmaeninae; the holotype male measures merely 0.66 mm of body length. The distribution of Japanese Cephennomicrus species is summarized, with the aedeagus of each species illustrated on the distribution map, to facilitate identifications and further study on this broadly distributed but poorly known cephenniine genus. 


Zootaxa ◽  
2021 ◽  
Vol 4996 (3) ◽  
pp. 525-539
Author(s):  
JOHEI OKU ◽  
YOSITAKA SAKAMAKI ◽  
TOSHIYA HIROWATARI

Six Japanese species of the genus Lecithocera Herrich-Schäffer, 1853 (Gelechioidea: Lecithoceridae) are treated: L. chersitis Meyrick, 1918; L. daebuensis Park & Lee, 1999; L. duplicata (Gozmány, 1978); L. tridentata Wu & Liu, 1993; L. fascimaculata sp. nov.; and L. fuscialaris sp. nov.. One species, L. duplicata (Gozmány, 1978), is reported for the first time from Japan. The male and female genitalia, wing venation, and adult appearance are illustrated for all the species.


Crustaceana ◽  
2018 ◽  
Vol 91 (11) ◽  
pp. 1327-1345 ◽  
Author(s):  
Khaoula Ayati ◽  
Sonia Dhaouadi ◽  
Ezzeddine Mahmoudi ◽  
Christophe Piscart

Abstract This study describes two new species of the genus Echinogammarus from springs and rivers located in northern Tunisia. These two species are related to the Echinogammarus simoni-group, but differ from those species in terms of several characteristics, such as a 3-articulated accessory flagellum of the first antennae, the lack of a dense setation on the second antennae, the presence of lateral setae on the telson and the lack of plumose setae on uropod 3. The first species, Echinogammarus carthaginiensis n. sp., is easily distinguishable from the second, Echinogammarus tunetanus n. sp., by the setation on the mandibular palp and gnathopods and the relative length of uropods 1 and 3. A full description of the two new species and information about their distribution is given in this paper.


2020 ◽  
Vol 80 ◽  
pp. 99-135
Author(s):  
Yoto Komeda ◽  
Toshiharu Mita ◽  
Yoshimi Hirose ◽  
Kenzo Yamagishi

Japanese species of the muscaeforme-group, charon-group, and floridanum-group of Gryon have been revised. Among the species of the muscaeforme-group, G. fulvicoxasp. nov. is newly described. Gryon misha Kozlov & Kononova, syn. nov. is considered a junior synonym of G. japonicum (Ashmead). Gryon maruzzae Mineo, syn. nov. and G. sugonjaevi Kozlov & Kononova, syn. nov. are considered junior synonyms of G. yamagishii Mineo. Among the species of the charon-group, G. shisasp. nov. is newly described. Gryon hakonense (Ashmead) syn. nov. is considered as a junior synonym of G. philippinense (Ashmead). Among the species of the floridanum-group, G. pennsylvanicum (Ashmead) is recognized. Host records of the three species groups are also revised.


Author(s):  
Kazutaka Yamada ◽  
Tomohide Yasunaga

Japanese Anthocorini are reviewed. A total of five genera and 13 species were identified, including two new species described below: Temnostethus mirificus sp. nov. and Anthocoris venustus sp. nov. Previous records of Anthocoris miyamotoi Hiura, 1959 from Japan are considered to be confused with A. venustus sp. nov. Anthocoris nemoralis (Fabricius, 1794), which is a common and widespread species in Europe, is recorded in Japan for the first time; it is assumed to have been accidentally introduced into Japan recently. Temnostethus distans Kerzhner, 1973 and Anthocoris kalopanacis Kerzhner, 1977 are newly recorded in Japan proper. Male and female genitalia are illustrated and described for most of the treated species. Identification keys to the genera and species that occur in Japan are provided. Bionomics are provided for each species. Detailed locality information and distribution maps in Japan are presented for all Japanese species and their zoogeography is discussed.


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