■Reports
Maya Miyao & Hiroyuki Sakaino
Structure of the completely everted and inflated endophallus of Nicagus japonicus Nagel (Coleoptera, Lucanidae) … 1
Maya Miyao
Lucanid beetles of the central mountain of the Izu Peninsula with special reference to the distribution of Platycerus takakuwai (Coleoptera, Lucanidae) … 7
Shigeo Shirasugi
Report of a collecting trip to Tanegashima Is, Kagoshima Prefecture in 2019 with three new distribution records … 17
Hirokazu Kobayashi
Notes on the scarab chafers of the Daxueshan Logging Road, Taiwan … 21
Takeshi Matsumoto
Rediscovery of Anomala multistriata (Motschulsky, 1861) (Coleoptera, Scarabaeidae, Rutelinae) from the Yodo River, Osaka City with notes on the beetles inhabiting there … 27
Hirokazu Kobayashi
Notes on Maladera yasutoshii Nomura, 1974 (Coleoptera, Scarabaeidae, Sericinae) and its allied species … 35
Satoshi Hagino
Comparison of the punctures on the dorsal surface of the two subspecies of Anomala albopilosa (Coleoptera, Scarabaeidae, Rutelinae), ssp. sakishimana and ssp. albopilosa … 41
Kazuhiro Iijima
What are the adults of Gametis jucunda (Coleoptera, Scarabaeidae, Cetoniinae) doing on the flower of the Japanese pampas grass? … 46
Kazuhiro Iijima
Observations of copulation and a spermatophore of Osmoderma opicum (Coleoptera, Scarabaeidae, Cetoniinae) … 51
Hirokazu Kobayashi
Notes on the species of Pseudosericania and its allied genera (Coleoptera, Scarabaeidae, Sericinae) … 53
Fuminori Hirokawa
Collecting records of Mozartius jugosus (Coleoptera, Scarabaeidae, Aphodiinae) from 2018 to 2019 … 61
■報 文
マグソクワガタの雄交尾器内袋構造について
宮尾 真矢・境野 広行 1
伊豆半島中央山地のクワガタムシ-主にトウカイコルリクワガタの生息状況に着目して-
宮尾 真矢 7
新記録が3種も採れた種子島採集記2019
白杉 滋朗 17
台湾大雪山林道の食葉性コガネムシについて
小林 裕和 21
淀川ワンド(大阪市域)におけるハンノヒメコガネの再発見-淀川の甲虫の話題とともに-
松本 武 27
シバタビロウドコガネについて
小林 裕和 35
アオドウガネ与那国島亜種と原名亜種との点刻の比較
萩野 哲 41
コアオハナムグリはススキの穂の上で何をしているのか?
飯嶋 一浩 46
オオチャイロハナムグリの精包について
飯嶋 一浩 51
ニセチャイロビロウドコガネ属と近縁の属について
小林 裕和 53
2018年から翌春にかけてマルマグソコガネを狙ってみて
廣川 典範 61
■シリーズ
表紙写真解説:ゴホンダイコクコガネ
宇都宮 靖博 表紙裏
世界の珍しいコガネムシ類図解[29] 飛ぶのを止めたタマオシコガネPachysoma
新居 悟 裏表紙
■短 報
コガネの幼虫がアリの集団に地表を曳摺られる例
三村 義友 26
蜘蛛に食われるコアオハナムグリ
三村 義友 34
ヒメオオクワガタ♂によるコクワガタ♀への求愛行動の観察記録
上木 岳 40
富山県におけるマグソコガネ2種の採集記録
澤田 研太 45
南大東島のハイイロハナムグリ
白杉 滋朗 58
ラインアシナガコガネが杉の丸太に集まっている事例
小林 修司 59
アマゴに食われたオオセンチコガネ
稲垣 政志・稲垣 信吾 60
訂正 40
書評:「日本のダイコクコガネの仲間」
中峰 空 44
投稿規程
66
編集後記
編集委員 67
CONTENTS
■Reports
Maya Miyao & Hiroyuki Sakaino
Structure of the completely everted and inflated endophallus of Nicagus japonicus Nagel (Coleoptera, Lucanidae) … 1
Maya Miyao
Lucanid beetles of the central mountain of the Izu Peninsula with special reference to the distribution of Platycerus takakuwai (Coleoptera, Lucanidae) … 7
Shigeo Shirasugi
Report of a collecting trip to Tanegashima Is, Kagoshima Prefecture in 2019 with three new distribution records … 17
Hirokazu Kobayashi
Notes on the scarab chafers of the Daxueshan Logging Road, Taiwan … 21
Takeshi Matsumoto
Rediscovery of Anomala multistriata (Motschulsky, 1861) (Coleoptera, Scarabaeidae, Rutelinae) from the Yodo River, Osaka City with notes on the beetles inhabiting there … 27
Hirokazu Kobayashi
Notes on Maladera yasutoshii Nomura, 1974 (Coleoptera, Scarabaeidae, Sericinae) and its allied species … 35
Satoshi Hagino
Comparison of the punctures on the dorsal surface of the two subspecies of Anomala albopilosa (Coleoptera, Scarabaeidae, Rutelinae), ssp. sakishimana and ssp. albopilosa … 41
Kazuhiro Iijima
What are the adults of Gametis jucunda (Coleoptera, Scarabaeidae, Cetoniinae) doing on the flower of the Japanese pampas grass? … 46
Kazuhiro Iijima
Observations of copulation and a spermatophore of Osmoderma opicum (Coleoptera, Scarabaeidae, Cetoniinae) … 51
Hirokazu Kobayashi
Notes on the species of Pseudosericania and its allied genera (Coleoptera, Scarabaeidae, Sericinae) … 53
Fuminori Hirokawa
Collecting records of Mozartius jugosus (Coleoptera, Scarabaeidae, Aphodiinae) from 2018 to 2019 … 61
■Series
Yasuhiro Utsunomiya
Cover photo: Copris acutidens, Motschulsky, 1860 ♂ … Front cover
Satoru Nii
Interesting Lamellicornia of the world [29] Flightless Scarabaeini, Pachysoma … Back cover
■Short Reports
Yoshitomo Mimura
An observation of a scarab grub preyed by the ant, Pheidole noda … 26
Yoshitomo Mimura
A record of Gametis jucunda (Coleoptera, Scarabaeidae, Cetoniinae) preyed by the spider, Nephila clavata … 34
Gaku Ueki
An observation of mate guarding behavior by a male of Dorcus montivagus to a female of Dorcus rectus (Coleoptera, Lucanidae) … 40
Kenta Sawada
New records of two Aphodius species (Coleoptera, Scarabaeidae, Aphodiinae) from Toyama Prefecture … 45
Shigeo Shirasugi
A record of Protaetia fusca (Coleoptera, Scarabaeidae, Cetoniinae) form Minamidaitojima Is., Okinawa Prefecture … 58
Syuji Kobayashi
An observation of Hoplia reinii (Coleoptera, Scarabaeidae, Cetoniinae) attracted to logged Japanese cedar trees … 59
Masashi Inagaki & Shingo Inagaki
A record of an adult of Phelotrupes auratus (Coleoptera, Geotrupidae) preyed by a red spotted masu trout … 60
Erratum … 40
Hiroshi Nakamine
Book review: “The Japanese Copris” by Tsukamoto, K., Inagaki, M., Kawahara, M. & Mori, M. … 44