巻号一覧
69 巻 (2020)
- 2 号 p. 71-
- 1 号 p. 1-
69 巻, 1 号
選択された号の論文の10件中1～10を表示しています
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原著論文
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Takahide Kamura2020 年69 巻1 号 p. 1-9
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリー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.抄録全体を表示PDF形式でダウンロード (1760K) -
Akio Tanikawa2020 年69 巻1 号 p. 11-15
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーA new species of Araneus is described under the name Araneus reizan n. sp., by using specimens collected from Honshu, Japan. The female of the species can be distinguished from related species by the epigynal opening directing inward. The male of the species closely resemble A. macacus, but can be separated from the latter by the wider conductor, thinner projection of the conductor, and larger projection of the tegulum. The pairing of male and female specimens of the species was confirmed by DNA barcoding using mt-COI partial sequencing data.抄録全体を表示PDF形式でダウンロード (13320K) -
Rishikesh Tripathi, Ashish Kumar Jangid, Manju Siliwal, Sutirtha Dutta2020 年69 巻1 号 p. 17-21
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーHere we report and describe matriphagy (maternal self-sacrifice) phenomenon in Stegodyphus pacificus Pocock 1900, observed in Thar Desert of Rajasthan, India. All 57 nests observed during the study exhibited matriphagy. Typically, a female laid a cluster of about 100 eggs and spiderlings hatched nearly 33 days after the egg-laying. Around 17 days after hatching, spiderlings started feeding on their mother. Spiderlings dispersed from the nest after the death of the mother, roughly 84 days since egg-laying. While matriphagy has been known in some spider species, this phenomenon has not been reported or described in S. pacificus.抄録全体を表示PDF形式でダウンロード (1886K) -
Tatsumi Suguro2020 年69 巻1 号 p. 23-25
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリー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.抄録全体を表示PDF形式でダウンロード (777K) -
Ray Gabriel, Danniella Sherwood2020 年69 巻1 号 p. 27-30
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーFurther cases of spermathecal conjoining are reported for the family Theraphosidae Thorell, 1869. Ocular conjoining in an undetermined species of Sericopelma Ausserer 1875 and a conjoining of metatarsus IV in a live adult male of Ceratogyrus marshalli Pocock 1897 are also reported.抄録全体を表示PDF形式でダウンロード (7988K) -
Kazuhiro Tanaka, Yasuhiko Watari2020 年69 巻1 号 p. 31-35
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーPDF形式でダウンロード (413K) -
Takeshi Yamasaki, Yoshiaki Hashimoto, Tomoji Endo, Fujio Hyodo, Itioka ...2020 年69 巻1 号 p. 37-41
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーAgorius hyodoi sp. nov. (Araneae: Salticidae) is described here on the basis of male and female specimens collected from the Lambir Hills National Park, Sarawak, Borneo. The conspecificity of the male and female was confirmed by DNA barcoding.抄録全体を表示PDF形式でダウンロード (965K) -
Alexander A. Fomichev, Yuri M. Marusik2020 年69 巻1 号 p. 43-48
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーA poorly known species of spitting spider from a monotypic genus, Scyloxes asiatica Dunin 1992, is redescribed based on the types and newly collected material. The species is reported for the first time outside of its type locality. Digital photographs and map of distribution records of S. asiatica are provided.抄録全体を表示PDF形式でダウンロード (6042K) -
Yuya Suzuki2020 年69 巻1 号 p. 49-54
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリーPredatory behavior in Cnodalia harpax is described herein for the first time. Females of the species hanging on two threads span between branches at night were observed in the field. One of them was feeding on a sciarid fly. Observations in the laboratory revealed that C. harpax used its long claws to capture prey by hooking the legs, wings, and body. The impalement of prey by claws, previously described in tetragnathid spiders with long claws, had not been observed in C. harpax.抄録全体を表示PDF形式でダウンロード (3186K) -
Tatsumi Suguro2020 年69 巻1 号 p. 55-60
発行日: 2020/06/20
公開日: 2020/06/20
ジャーナル フリー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.抄録全体を表示PDF形式でダウンロード (2974K)
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