Cercyon (Cercyon) terminatus (Marsham, 1802)

Sazhnev, A. S., Prokin, A. A. & Sergeev, M. E., 2021, New data on water beetles (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Elmidae) of Primorsky Krai (Russia), Russian Entomological Journal 30 (3), pp. 264-274 : 268-269

Cercyon (Cercyon) terminatus (Marsham, 1802) Figs 11–14 .

= Cercyon (Cercyon) emarginatus Baranowski, 1985 , syn. nov.

MATERIAL EXAMINED. 5: 11.VII.2018, 1 ex.; 15: 28.V.2020,

2 exs.; 16: 18.VI.2015, 5 exs.

DISTRIBUTION. Europe, North Africa, Near East, Kazakhstan, West Siberia, Mongolia, China (Shaanxi), Russian

Far East (Amur Oblast, Khabarovsky Krai and Primorsky Krai) [ Shatrovskiy, 1989b; Fikáček et al., 2015], introduced to North America [ Smetana, 1978, 1988].

NOTE. Studied specimens from Primorsky Krai morphologically are identical to Cercyon emarginatus Baranowski, 1985 description, but the external characters of this species are within the variability range of Cercyon terminatus (Marsham, 1802) ; the structure of the genitalia according to Baranowski [1985: P. 343, Figs 1–6 ] shows that type series is identical to that of specimens of C. terminatus from European Russia and Primorsky Krai ( Fig. 4 ), as well as with pictures provided by A. Smetana for North American specimens [ Smetana, 1978: Figs 133–135; Smetana, 1988: Figs 345– 347]. Thus, a new synonymy is established here.

Figures

Figs 11–13. Male genitalia of Cercyon terminatus (Marsham, 1802) from the Sikhote-Alin Nature Reserve: 11 — parameres (lateral lobes) and phallobase; 12 — penis (median lobe); 13 — ninth ventrite. Photographs by A.A. Prokin. Рис. 11–13 Гениталии самца Cercyon terminatus (Marsham, 1802) иЗ СихотЭ-Алинского Заповедника: 11 — парамеры и фаллобаЗа; 12 — пенис; 13 — девЯтый вентрит. Фотографии А.А. Прокина.

Fig. 14. Localities in Primorsky Krai: red star — The Sikhote-Alin Nature Reserve, red circles: 1 — Furugelm Island; 2 — Vityaz village; 3 — “Kedrovaya Pad” Nature Reserve; 4 — Barabash village; 5 — Zanadvorovka village; 6 — Popova Island; 7 — Russky Island; 8–9 — Vladivostok, Okeanskaya station and Botanical Garden; 10 — Kaymanovka village; 11 — Khanka Nature Reserve, Sopka Luzanova; 12 — Spassk-Dalny; 13 — Chuguevka village; 14 — Udygeyskaya Legenda National Park. Рис. 14. Локалитеты на территории Приморского краЯ. КраснаЯ ЗвеЗда — СихотЭ-Алинский Заповедник, красные круги: 1 — остров Фуругельма; 2 — с. ВитЯЗь; 3 — Заповедник «КедроваЯ падь»; 4 — с. Барабаш; 5 — с. Занадворовка.; 6 — остров Попова; 7 — остров Русский; 8–9 — Владивосток, ст. ОкеанскаЯ и ботанический сад; 10 — с. Каймановка; 11 — Ханкайский Заповденик, “Сопка ЛуЗанова”; 12 — Спасск-Дальний; 13 — с. Чугуевка; 14 — национальный парк “УдыгейскаЯ легенда”.

Figs 1–5. Ametor scabrosus Horn, 1873, holotype and paratype of Hydrocassis lucifer Shatrovskiy, 1989: 1 — habitus, ventral view; 2 — aedeagus; 3, 5 — labels; 4 — habitus, dorsal view; 1–3 — holotype; 4–5 — paratype. Photographs by V.M. Loktionov. Рис. 1–5. Ametor scabrosus Horn, 1873; голотип и паратип Hydrocassis lucifer Shatrovskiy, 1989: 1 — габитус, сниЗу; 2 — Эдеагус; 3, 5 — Этикетки; 4 — габитус, сверху; 1–3 — голотип, 4–5 — паратип. Фотографии В.М. Локтионова.

Fig. 6. Localities in the Sikhote-Alin Nature Reserve (numbers as in the text). Рис. 6. Локалитеты на территории СихотЭ-Алинского Заповедника (нумерациЯ как в тексте).