著者
Takahide Kamura
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.69, no.1, pp.1-9, 2020-06-20 (Released:2020-06-20)
参考文献数
37
被引用文献数
1

A new gnaphosid genus of the subfamily Zelotinae is described under the name of Aponetius n. gen. The new genus is related to Zelotes in having an intercalary sclerite in the male palp, but is distinguished from the latter by the male palp with an embolar radix reduced, a long embolus arising ventrally and a curved ridge on the retrolateral side of the cymbium, and the female genitalia with internal ducts complexly winding. Three species previously assigned to Zelotes are transferred to the new genus: Aponetius gladius (Kamura 1999) n. comb., A. ryukyuensis (Kamura 1999) n. comb. and A. flexuosus (Kamura 1999) n. comb. Two new species belonging to this new genus are described under the names of A. ogatai n. sp. and A. watarii n. sp. from Amami-Ōshima Island, Southwest Japan.
著者
田中 穂積
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.27, no.Specialnumber, pp.51-59, 1977 (Released:2007-03-29)
被引用文献数
3 3

In this paper are given the descriptions of two new species of the genus Pardosa C. KOCH found in Japan. These species resemble each other morphologically and ecologically, inhabiting riversides and seashores.
著者
宮下 直
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.45, no.1, pp.81-88, 1996 (Released:2007-03-29)
参考文献数
20
被引用文献数
1 1

This paper reviews inter- and intraspecific competition in web-building spiders in the field. Although interspecific competition was thought to be important in spider communities, recent field experiments have revealed that it is infrequent. Intraspecific competition is also not common at the population level. Possible reasons for the absence of competition in spider populations are discussed.
著者
板倉 泰弘
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.47, no.2, pp.173-175, 1998 (Released:2007-03-29)
参考文献数
5
被引用文献数
8 13

ハヤテグモ Perenethis fascigera の婚姻給餌行動の概略を報じた.
著者
Roberto Lombardo Daniel Murcia-Moreno Dumas Gálvez
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.72, no.2, pp.91-93, 2023-12-10 (Released:2023-12-10)

Spiders are nearly omnipresent in tropical regions, throughout a vast range of habitats, where they act as top predators of other invertebrates. On islands, spiders may assume the role of larger mainland predators in regulating invertebrate populations. This study documents a novel predator-prey interaction between the wandering spider Ancylometes bogotensis and the land crab Gecarcinus quadratus on Coiba Island Panama Pacific. We briefly discuss the ecological implications of this predator-prey relationship and the potential influence of marine subsidies on the island’s terrestrial ecosystem.
著者
Ken-ichi Okumura Ren-Chung Cheng
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.72, no.1, pp.17-21, 2023-06-20 (Released:2023-07-01)
被引用文献数
1

A new synonymy of coelotine spider is proposed through a comparison of the morphological characteristics and the results of our molecular analysis. Coelotes hachijoensis Ono 2008, described on the basis of specimens from Hachijo Island, is a junior synonym of Coelotes oshimaensis Shimojana 2000. The original distribution of C. oshimaensis is considered to be on Amami-oshima Island and the Tokara Islands in southwestern Japan, far from Hachijo Island. Various circumstantial evidences suggested that C. oshimaensis on Hachijo Island may have been artificially introduced from Amami-oshima Island.
著者
Yusuke Sugawara Naoki Koike Takafumi Nakano
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.71, no.1, pp.27-31, 2022-06-30 (Released:2022-07-02)

Spiders of the genus Cybaeus are diverse in Japan and exhibit extensive morphological variation of their genitalia among species. Among Japanese Cybaeus, several species possess an elongated embolus in males and elongated spermathecae in females. Here, we describe Cybaeus iharai sp. nov. from Nagano Prefecture, central Honshu, Japan, which possesses a short embolus in males and short copulatory ducts in females. In addition, DNA sequences of the new species were obtained for future phylogenetic analyses.
著者
坂寄 廣
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.38, no.2, pp.55-62, 1989 (Released:2007-03-29)
参考文献数
17
被引用文献数
1 2

チビコケカニムシの, 成体雄を除く後胚子発生の各段階の外部形態を, 特に毛序式に注目して記載した。後胚子発生過程に見られる chelal trichobothria の数の変化から, チビコケカニムシは, 他の種では成体の重要な特徴となる12本の chelal trichobothria を持ったステージが欠落した, 幼形成熟による種であると結論した。
著者
Peter Jäger
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.56, no.1, pp.29-58, 2007 (Released:2007-11-10)
参考文献数
47
被引用文献数
20 25

A total of 58 spider species is reported from material mainly collected on three recent expeditions to Laos. Out of these, five species are described as new: Psechridae — Psechrus khammouan sp. nov. (male, female), Psechrus luangprabang spec. nov. (male, female), Liocranidae — Sesieutes thakek spec. nov. (male), Zodariidae — Storenomorpha anne spec. nov. (male, female), Sparassidae — Pseudopoda houaphan spec. nov. (female). The males of Caerostris sumatrana Strand, 1915 (Laos; first record for Asia) and Eurychoera quadrimaculata Thorell, 1897 (Singapore) are described for the first time. Copulatory organs of the latter species are illustrated for both sexes to facilitate identification of Eurychoera banna Zhang, Zhu & Song, 2004. New records of species formerly known from Laos are listed: Heteropoda dagmarae Jäger & Vedel, 2005, H. maxima Jäger, 2001, H. tetrica Thorell, 1897, H. venatoria (Linnaeus, 1767), Rhitymna verruca (Wang, 1991), R. plana Jäger, 2003.
著者
Ken-ichi Okumura Naoki Koike Takafumi Nakano
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.66, no.2, pp.73-78, 2017 (Released:2017-12-31)
参考文献数
24
被引用文献数
4 5

Taxonomic accounts of two species belonging to the subfamily Coelotinae from Japan are reviewed. Iwogumoa portus Nishikawa 2009 originally described from Osaka, Japan and Coelotes plancyi Simon 1880 described from Beijing, China are considered to be conspecific. Therefore the former is synonymized with the latter, and C. plancyi is transferred to the genus Iwogumoa Kishida 1955. Coelotes inabaensis Arita 1974 described from Tottori, Japan is placed under the genus Dichodactylus Okumura 2017.
著者
Takahide Kamura
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.70, no.2, pp.117-130, 2021-12-27 (Released:2021-12-30)
被引用文献数
5

Three new genera of the family Phrurolithidae, Pennalithus n. gen., Corealithus n. gen. and Labialithus n. gen., are described, and Pennalithus pennatus (Yaginuma 1967) n. comb., Corealithus coreanus (Paik 1991) n. comb. and Labialithus labialis (Paik 1991) n. comb. are respectively designated as type species. In addition to the above type species, four new combinations are proposed: Pennalithus splendidus (Song & Zheng 1992) n. comb., P. palgongensis (Seo 1988) n. comb., Corealithus subnigerus (Fu, Chen & Zhang 2016) n. comb. and Labialithus lindemanni (Marusik, Omelko & Koponen 2020) n. comb. The above five species of Pennalithus and Corealithus are transferred from Otacilia Thorell 1897, and two species of Labialithus are from Phrurolithus C. L. Koch 1839. A new species, Pennalithus suguroi n. sp., is described, and Phrurolithus pennatoides Seo 2018 is treated as a junior synonym of Pennalithus splendidus.
著者
高島 春雄
出版者
日本蜘蛛学会
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.10, no.1-2, pp.9-31, 1947-03-20 (Released:2008-12-19)
参考文献数
22
被引用文献数
1 1
著者
宮下 和喜
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.41, no.2, pp.177-186, 1992 (Released:2007-03-29)
参考文献数
13
被引用文献数
7 10

母グモの網より分散する少し前の幼生 (若虫) を半自然条件下で個体飼育したところ, 雄は8~9回脱皮をし, 生まれてから3年目の春に成体になった. 雌では, 9~11回脱皮をして3年目の春と秋および4年目の春に成体になるものが生じた. 飼育開始から3年目の春までの巣網の直径の成長を調べたところ, 雄では2.3mmより13.3mmに, 雌では2.3mmより13.7mmに成長した. 雌の網の直径はこの後も成長をつづけ, 5年目には15.9mmに達した. また, 雌は成体になってからも毎年春に1回脱皮を繰り返した. 幼生と成体の1週間当りの排泄回数を1年間にわたって調べたところ, 排泄回数は夏に増加し冬には減少したが, 排泄が完全に停止してしまう訳ではなかった. これらの調査結果と, これらに平行して行なった野外調査の結果とを合わせ, このクモの生活環を考察した.
著者
新海 明 新海 栄一
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.33, no.1, pp.9-17, 1985 (Released:2007-03-29)
参考文献数
17
被引用文献数
2 3

カラカラグモの網構造と餌捕獲行動を観察した。このクモの張る円網は大変ユニークであった。すなわち。網にはこしきがなく数本のタテ糸が中心付近でまとめられていた。クモは中心においてtrapline と呼ばれる1本の糸で網を支えているので網はちょうどカサをひっり返した状態になっていた。昆虫が網にかかるとこの糸は解き放たれ, そのため網は弾かれるように戻り昆虫を絡めてしまった。造網過程も調査した。この網は最初はこしきとこしき糸を持った典型的な円網と同じように張られるのだが, 後にその部分が噛み切られ無こしきとなった。この一連の造網過程はカラカラグモが円網を張るクモの祖先から生じてきたことを示唆している。
著者
Alireza Zamani Yuri M. Marusik
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.69, no.2, pp.121-126, 2020-12-20 (Released:2020-12-24)
参考文献数
5
被引用文献数
3

Three new species of spiders are described from southern Iran: Filistata balouchi sp. n. (♂, Filistatidae; Sistan & Baluchistan Province), Levymanus dezfulensis sp. n. (♀, Palpimanidae; Khuzestan Province) and Scytodes kumonga sp. n. (♀, Scytodidae; Hormozgan Province). This is the first record of the genus Levymanus in Iran, and the easternmost record of the genus Filistata globally.
著者
Ken-ichi Okumura
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.69, no.2, pp.77-94, 2020-12-20 (Released:2020-12-24)
参考文献数
53
被引用文献数
5

There are currently doubts about the correct genus of many Japanese species of coelotine spider provisionally classified in the genus Coelotes. Thus, taxonomic revisions were performed on 16 species with two retromarginal teeth on their chelicerae. Consequently, three new genera of the subfamily Coelotinae are described here. Aeolocoelotes gen. n. consists of seven species, which are characterized by extremely diverse variations in their genital organs and by the clear parapatric distributions among the congeneric species. Individuals in Aeolocoelotes gen. n. have large and dark-colored bodies, and females have a stiff chitinous epigyne. Curticoelotes gen. n. consists of six species, which are characterized by a short cymbium in the male palp. Finally, Griseidraconarius gen. n. consists of three species, which are characterized by their pale-colored bodies, spiraled conductors in the male palp, and tiny epigynal teeth.
著者
谷川 明男
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.38, no.2, pp.31-47, 1989 (Released:2007-03-29)
参考文献数
21
被引用文献数
7 9

現在まで, 日本産の Larinia 属としては, コガネグモダマシ L. argiopiformis BÖSENBERG et STRAND のみが知られていたが, 新たにネッタイコガネグモダマシ (新称) L. fusiformis (THORELL), ミナミコガネグモダマシ (新称) L. phthisica (L.KOCH), キタコガネグモダマシ (新称) L. jeskovi MARUSIK の3種の分布を確認し, ムネグロコガネグモダマシ (新称) L. onoi とセキグチコガネグモダマシ (新称) L. sekiguchii の2新種を記載した。これにより日本産の Larinia 属は6種となった。
著者
井原 庸
出版者
Arachnological Society of Japan
雑誌
Acta Arachnologica (ISSN:00015202)
巻号頁・発行日
vol.44, no.2, pp.129-152, 1995 (Released:2007-03-29)
参考文献数
6
被引用文献数
3 1

Arcuphantes (サラグモ科: ヤミサラグモ属) の longiscapus 種群について, 生殖器の形態と地理的な分布パターンにもとづき分類学的改訂を行った. 本種群の種として, A. longiscapus ナガエヤミサラグモ, A. hibanus ヒバヤミサラグモ, A. iharai アキヤミサラグモの3既知種と, A. saitoi イズモヤミサラグモ (新称), A. setouchi セトヤミサラグモ (新称), A. tsurusakii ツルサキヤミサラグモ (新称), A. nojimai ハリマヤミサラグモ (新称), A. okiensis オキヤミサラグモ (新称) の5新種を記載した. これらの8種は, 本州西部と四国北東部および付近の島に限って分布する. それぞれの種の分布は側所的なパターンを示し, 狭い分布重複域をもつ場合がある. 雄触肢と雌の外雌器の間には, 種特異的な形態の対応が認められる.