著者
Akio Tanikawa
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.66, no.1, pp.1-4, 2017-08-31 (Released:2017-09-11)
参考文献数
5

A new araneid species Zygiella hiramatsui n. sp. is described using specimens obtained from Amami-ôshima Island, Japan. This species can be distinguished from allied Z. dispar by the much wider median area of the epigyne, or an unnamed apophysis neighboring the embolus that is short and truncated and a horn shaped apophysis of the tegulum in the male palp. It is uncommon for Zygiella spiders to inhabit subtropical regions, but this is the case for Z. hiramatsui n. sp. So it might be introduced previously into Amami-ôshima Is. from unknown habitat.
著者
Akio Tanikawa Yung-Hau Chang I-Min Tso
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.59, no.1, pp.31-38, 2010-09-30 (Released:2010-10-29)
参考文献数
42
被引用文献数
5 or 0

The Taiwanese and Japanese spiders which have been identified with Cyrtophora moluccensis (Doreshall 1857) are taxonomically revised. Three color morphs, yellow-, green-, and red-types, show their own discrete monophyletic clades in the phylogenetic tree inferred by Neighbor Joining method using the partial sequences of mt-16S-rRNA genes. P-distances within group means are 0.2% in the yellow-type, 0.1% in the green-type, and 0% in the red-type. P-distances between group means are 18.8% between yellow- and green-types, 19.4% between yellow- and red-types, 10% between green- and red-types. These three color morphs can be separated also by the shapes of epigynum and male palp. Consequently we recognize them as three independent nominal species and determined the yellow-type as C. cylindroides (Walckenaer 1842), the green-type as C. moluccensis (Doleschall 1857), and the red-type as C. ikomosanensis (Bösenberg & Strand 1906).
著者
Akio Tanikawa
出版者
日本蜘蛛学会
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.52, no.1, pp.35-42, 2003 (Released:2007-03-29)
参考文献数
11
被引用文献数
2 or 0

As a result of a series of faunal surveys of spiders of Okinawa Prefecture, southernmost Japan, following seven species were recognized to occur in the family Pisauridae: Hygropoda higenaga (Kishida 1936), Perenethis venusta L. Koch 1878, Dolomedes yawatai Ono 2002, D. orion n. sp., D. zatsun n. sp., D. horishanus Kishida 1936, and Pisaura bicornis Zhang & Song 1992. Descriptions of the two new species, Dolomedes orion and D. zatsun, are presented. Dolomedes horishanus and Pisaura bicornis are the species whose occurrences in Japan were recognized for the first time. Redescriptions of those two species based on the specimens collected from Okinawa Prefecture are also provided. Dolomedes mizhoanus Kishida 1936 known from Taiwan is newly synonymized with D. horishanus. D. yawatai, which was described from Ishigaki-jima Island, was found to occur also in Iriomote-jima Island. D. okinavensis Kishida 1924 is considered as nomen dubium and hence removed from the species list of Japanese Pisauridae.
著者
Akio Tanikawa
出版者
日本蜘蛛学会
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.50, no.1, pp.63-86, 2001 (Released:2007-03-29)
参考文献数
23
被引用文献数
6 or 9

Twelve new species are described from Japan under the names, A. nojimai, A. tsurusakii, A. ryukyuanus, A. borealis A. iriomotensis, A. yasudai, A. hoshi, A. komi, A. ogatai, A. miyashitai, A. mayumiae, A. amabilis. In addition, A. acusisetus Zhu & Song 1994 is newly recorded from Japan..
著者
Akio Tanikawa Nisikawa Usio Atsushi Ohwaki Chihiro Endo Tadashi Miyashita
出版者
日本蜘蛛学会
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.63, no.1, pp.23-25, 2014-08-31 (Released:2014-09-19)
参考文献数
18

A new species, Pardosa albomarginata, is described from Sadogashima Is., Niigata Prefecture, Japan.