著者

Yuki G Baba Kenichiro Fujita

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.70, no.1, pp.7-9, 2021-06-28 (Released:2021-07-05)

参考文献数

19

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Spiders can be carried out to sea by wind (ballooning on silk) or floods (on flotsam), but this is rarely observed. Here, we report on two wolf spider (Lycosidae) species, Arctosa fujiii Tanaka 1985 and Hygrolycosa umidicola Tanaka 1978, found at sea within 400 m of the coast of Tokyo Bay in Chiba Prefecture, Japan. These are two of the few examples of spiders found in coastal waters of Japan.

著者

Tatsumi Suguro

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.69, no.1, pp.55-60, 2020-06-20 (Released:2020-06-20)

参考文献数

4

被引用文献数

2

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At present, only one Stertinius species, S. kumadai Logunov, Ikeda & Ono 1997, is known from Japan. In this paper, a new species, S. ryukyuensis sp. nov., is described and compared with S. kumadai, which is redescribed. Despite similarities in general appearance, the two species can be separated based on the morphology of retrolateral tibial apophysis and male cheliceral teeth, as well as the position of large spermathecal chamber.

著者

Mai Kuroda Mayu Susukida Katsushi Sakamoto Sho Tsukamoto Anh D. Nguyen Emiko Oguri Katsuyuki Eguchi

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.71, no.2, pp.115-124, 2022-12-20 (Released:2022-12-27)

被引用文献数

3

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A large-sized species of Hyleoglomeris collected from Shiga Prefecture, Central Japan, was discriminated from the described species known from Japan and surrounding areas by our careful examination of external body structure as well as male telopods. The new species is similar to H. stuxbergi from Japan, but can be distinguished from the latter by the following combination of characters: syncoxital lobe widely bifid forming two sublobes which are extended ventrolaterad (vs. narrowly bifid forming a pair of sublobes extended ventrad in H. stuxbergi); syncoxital horns slightly converging to each other (vs. almost parallel in H. stuxbergi); femoral trichostele slightly curved mesad (vs. strongly bent laterad in H. stuxbergi). On the base of these differences, the species is herein described as Hyleoglomeris awaumi Kuroda, Susukida & Eguchi, sp. nov. Our COI-based phylogenetic tree involving H. awaumi and other five congeneric Japanese species also shows the genetic distinctiveness of the new species. In addition, our analysis further suggests that Japanese Hyleoglomeris is non-monophyletic.

著者

Nobuyuki Nakama Yasuyuki Nakamura Haruki Tatsuta Zoltán Korsós

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.71, no.1, pp.5-12, 2022-06-30 (Released:2022-07-02)

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A new pill millipede species, Hyleoglomeris magy sp. nov., is described from Okinawa and adjacent islands, Ryukyu Archipelago, Japan. The new species is mainly characterized by its large body (maximum length: 12.1mm) and general light yellowish-brown coloration marked with pairs of blackish spots. The general appearance of the new species resembles that of Hyleoglomeris hongkhraiensis Golovatch & Panha 2015, but can be distinguished from this species by the number of striae on the thoracic shield (typically 8–10, with 3 or 4 crossing the dorsum, vs 7 or 8 in total with 4 or 5 crossing the dorsum) and the shape of the telopod (femur strongly bulged distally, vs not bulged). An identification key to all five species of Hyleoglomeris known to occur in the Ryukyu Archipelago is also provided.

著者

Tatsumi Suguro

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.69, no.1, pp.23-25, 2020-06-20 (Released:2020-06-20)

参考文献数

4

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A thomisid species, Lycopus longissimus Tang & Li 2010, is newly recorded in Japan. The genus Lycopus is also new to Japan, and L. longissimus is the only Japanese species at present.

著者

Shojiro Nagayama Keizo Takasuka

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.70, no.2, pp.131-132, 2021-12-27 (Released:2021-12-30)

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Pandiculation within spiders has only recently been discovered - the first record of this habit among Protostomia – and it has only been demonstrated in one species (Cyclosa argenteoalba). We report here four further araneoid species i.e. Argiope bruennichi, Cyrtophora ikomosanensis, Trichonephila clavata (all Araneidae), and Nihonhimea japonica (Theridiidae) exhibiting pandiculation in or on their own webs. These records suggest that pandiculation is widely distributed at least among the superfamily Araneoidea, members of which generally construct aerial webs and wait in ambush for a long period.

著者

Tatsumi Suguro Yuki G. Baba Takeo Yamauchi

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.67, no.1, pp.19-21, 2018-08-31 (Released:2018-09-05)

参考文献数

11

被引用文献数

1

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A phrurolithid spider species, Phrurolithus splendidus Song & Zheng 1992, is newly recorded from Japan. This species resembles P. pennatus, but can be distinguished from the latter by male tibial apophysis with thin finger-shaped apex, and spermathecae located behind openings.

著者

Yuya Suzuki Ryohei Serita Takehisa Hiramatsu

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.69, no.2, pp.133-150, 2020-12-20 (Released:2020-12-24)

参考文献数

16

被引用文献数

2

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Japanese spiders of the genus Theridiosoma (Araneae: Theridiosomatidae) were revised with redescription of T. epeiroides Bösenberg & Strand 1906 and description of four new species, namely: T. dissimulatum sp. nov., T. paludicolum sp. nov., T. fulvum sp. nov., and T. alboannulatum sp. nov. The internal morphology of the female genitalia of T. epeiroides is illustrated in this study for the first time. Males of the new species can be distinguished from their congeners by the morphology of the embolic apophyses or the posterior edge of the embolic division on the male palp. Females of the former three species can be differentiated from their related species by the shape of the contour formed by interior edges of a pair of sclerotized processes on the posterior edge of the genital plate. The latter species can be distinguished from the allied species by the angular lateral corners of the genital plate and overall shape of the genitalia (longer than wide).

著者

高島 春雄

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.12, no.1-2, pp.8-17, 1950-06-20 (Released:2008-12-19)

著者

Suzuki Yuya

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.71, no.1, pp.59-61, 2022-06-30 (Released:2022-07-02)

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This paper describes field-based observations of male-male agonistic behavior in a longlegged sac spider Cheiracanthium eutittha (Araneae: Cheiracanthidae). Males of the species exhibited a characteristic agonistic behavior, where two males hung from leaves with a dragline, with all of their long legs entangled with each other and pushed each other’s body aggressively. To the best of my knowledge, this is the first video-based report of male-male agonistic behavior associated with usage of elongated legs in this spider family.

著者

Norifumi Ohchi

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.71, no.2, pp.89-91, 2022-12-20 (Released:2022-12-27)

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Tapinocyba subula Seo 2018 is newly recorded in Japan. This species was described on the basis of the specimens collected in Korea. Specimens collected at several sites in Fukuoka Prefecture, Japan, were identified as T. subula. This species was redescribed in Japan.

著者

Hiroyuki Iida Hideo Hasegawa

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.52, no.2, pp.77-78, 2003 (Released:2007-03-29)

参考文献数

9

被引用文献数

3 4

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Juveniles of a nematode belonging to the family Mermithidae were found from wolf spiders, Pardosa pseudoannulata, collected in a paddy field in Kyoto, Japan. Their morphological characteristics are briefly reported along with some ecological notes. This is the first record of a mermithid from P. pseudoannulata.

著者

Natsuki Hirakizawa Takeo Yamauchi

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.70, no.1, pp.1-5, 2021-06-28 (Released:2021-07-05)

参考文献数

14

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The lithobiomorph centipede Lithobius (Lithobius) forficatus (Linnaeus 1758) is here reported for the first time in mainland Japan. All specimens were collected in Obihiro City, eastern Hokkaido, Japan. This species has a rather widely morphological variation and seems to inhabit synanthropic areas. The present study is the first record of indoor invasion of lithobiomorph species in Japan.

著者

Keizo Takasuka

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.68, no.2, pp.77-80, 2019-12-20 (Released:2019-12-29)

参考文献数

30

被引用文献数

1

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Parasitism by the ichneumonid ectoparasitoid, Brachyzapus nikkoensis, on the agelenid spider, Allagelena opulenta is recorded for the second time with the first voucher specimen. The attacked host was an adult in contrast to the exclusive utilization of juveniles of the main host, Agelena silvatica. All published records of parasitism upon Agelena silvatica are from spring to early summer, and therefore this finding of parasitism in the end of September, would be consistent with B. nikkoensis shifting its hosts in accordance with their body size, seasonal prevalence and their availability, as previously suggested.

著者

Hiroyuki Matsuyama

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.72, no.2, pp.101-107, 2023-12-10 (Released:2023-12-10)

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Understanding the hard tick (Acari: Ixodida) fauna of the Iriomote cat (Prionailurus bengalensis iriomotensis Imaizumi 1967), an endangered species, is important for ecosystem conservation. However, there are no comprehensive reports on this topic. In this study, literature on the composition of tick species infesting Iriomote cats between 1975 and 2012 were compared. This study also reviewed on tick-borne pathogens found on Iriomote Island. Ticks Amblyomma testudinarium Koch 1844, Haemaphysalis hystricis Supino 1897, Haemaphysalis longicornis Neumann 1901, and Asiatic blue ticks (Rhipicephalus [Boophilus] microplus Canestrini 1888) were identified from Iriomote cats. Asiatic blue ticks were identified in 1975 and 1983–1985, whereas H. longicornis was identified from Iriomote cats for the first time in 2011–2012. Amblyomma testudinarium and H. hystricis were identified from Iriomote cats throughout the study period. Gene fragments of Anaplasma bovis Dumler et al. 2001, Babesia gibsoni Patton 1910, Bartonella henselae Brenner et al. 1993, Ehrlichia canis Donatien and Lestoquard 1935, Hepatozoon felis Patton 1908, and Candidatus Mycoplasma haemominutum were detected in ticks and/or animals such as domestic dogs (Canis lupus familiaris Linnaeus 1758), domestic cats (Felis catus Linnaeus 1758) and Iriomote cats on Iriomote Island. However, because the same genotypes of tick-borne pathogens were unknown or have not been detected in animal and tick species, the transmission network of tick-borne pathogens between hosts and ticks on Iriomote Island is unknown. Further studies are needed to understand the network structure of host-tick-pathogens on Iriomote Island, based on accurate identification of the pathogen genotype, and the risk of tick-borne pathogens in the Iriomote cat.

著者

Yusuke Shigemiya Kensuke Nakata

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.64, no.2, pp.75-81, 2015-12-31 (Released:2016-01-02)

参考文献数

15

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Rearing of animals from one generation to the next is important in many biological studies. In this study, we aimed to develop efficient methods for rearing multiple generations of orb-web spiders (Cyclosa argenteoalba), testing three methods. First, we examined isolated rearing with aphid supplied by hand. Second, we tested mass rearing. We also collected various insect species from the field using light trap and supplied them by hand. Both methods failed, perhaps because of the inappropriate aphid (Uroleucon formosanum) and insufficient quantity of prey supplied in the first and second tests, respectively. For the third method, we mass reared with abundant prey directly supplied from light traps into the terrariums located outside. This method successfully raised hatchlings to adults, and the eggs produced from these adults also matured. The development time of wintering and non-wintering cohorts was 150.2‐195.0 days and 24.0‐76.3 days, respectively.

著者

梅田 泰圭 新海 明 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.95-99, 1996 (Released:2007-03-29)

参考文献数

12

被引用文献数

8 8

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ミジングモ属 (Dipoena) 3種の捕獲していたアリの種, サイズ, 個体数を調査した. シモフリミジングモ D. punctisparsa は比較的小型のケアリ属を専食し, 大型の個体は一度に多数のアリを捕獲する傾向がみられた. ボカシミジングモ D. castrata の餌はケアリ属とオオアリ属が中心で, ほとんどが単数のアリを捕獲していた. 本種は成長にともない, 大きいアリを捕らえる傾向があった. カニミジングモ D. mustelina は非常に小型の種から大型の種までさまざまな種のアリを捕獲していた.

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.51, no.2, pp.149-154, 2002 (Released:2007-03-29)

参考文献数

17

被引用文献数

3 5

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ムツトゲイセキグモは日本にいる稀産の2種のナゲナワグモ類のうちのひとつである. 本報告は, 野外におけるムツトゲイセキグモの生活史, 若令幼体がもちいる餌捕獲法, および本種のメス成体や亜成体がもちいる「投げ縄」網の作成行動についてのはじあての観察記録である. ムツトゲイセキグモは年一世代の多回 (3-6回) 産卵のクモであり, ふ化した幼体は卵のう内でそのまま越冬した. 若令幼体とオスは投げ縄を使わず, 葉の縁で狩りをしていると考えられた. 亜成体と成体のメスは蛾を捕獲するために投げ縄を使用した. 投げ縄作成行動は, 投げ縄を第1脚のかわりに第2脚でもつ以外はナゲナワグモ属のものとまったく同一だった. ときどき, 2個の粘球がついた投げ縄を作ることがあった.

著者

篠原 圭三郎

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.30, no.1, pp.41-48, 1981 (Released:2007-03-29)

参考文献数

18

被引用文献数

1 1

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In Japan, the generic name Scolioplanes has been applied to a group of Geophilidae ever since, but the author holds the same view with CRABILL JR. and other European authors who have been using Strigamia instead of Scolioplanes for the genus. Two new species S. platydentata spec. nov. and S. bicolor spec. nov. are described here.

著者

新海 明

出版者

Arachnological Society of Japan

雑誌

Acta Arachnologica (ISSN:00015202)

巻号頁・発行日

vol.34, no.1, pp.11-22, 1985 (Released:2007-03-29)

参考文献数

20

被引用文献数

2 2

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ジョロウグモとオオジョロウグモの網構造を比較した。両種の幼体の網は barrier web (迷網) の形状を除き同じ構造であり, その主網は普通の円網に似ていた。一方, 両種の雌成体の網にはいくつかの点で違いがみられた。すなわち, ジョロウグモの網はオオジョロウグモにくらべて非相称性がより強く, ジョロウグモの網には分枝•二分割糸•迷網が認められた。しかし, オオジョロウグモでは二分割糸と迷網は認められなかったが分枝は存在していた。そして, これらの違いからジョロウグモの方がオオジョロウグモに比較してより特殊化しており, ジョロウグモ属のクモは円網を張っていたクモを祖先として, それから派生してきたと考えられた。