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

publication ID	https://doi.org/10.15298/rusentj.30.3.03
persistent identifier	https://treatment.plazi.org/id/185587F9-CB31-735F-FC94-F8F2FD2B56C4
treatment provided by	Felipe (2024-08-02 10:32:11, last updated by GgImagineBatch 2024-08-02 21:40:21)
scientific name	Cercyon (Cercyon) terminatus (Marsham, 1802)
status

Treatment

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

= Cercyon (Cercyon) emarginatus Baranowski, 1985 View in CoL , 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.

References

Baranowski R. 1985. Two new species of Cercyon Leach from Boreal Sweden // Scandinavian Entomolog. Vol. 15. P. 341 - 347.

Fikacek M., Angus R. B., Gentili E., Jia F., Minoshima Y. N., Prokin A., Przewozny M., Ryndevich S. K. 2015. Family Hydrophilidae Latreille, 1802. // I. Lobl, D. Lobl (eds.). Catalogue of Palaearctic Coleoptera. Vol. 2. Revised and Updated Edition. Leiden-Boston: Brill. P. 37 - 76.

Shatrovskiy A. G. 1989 b. [12. Fam. Hydrophilidae] // Lehr P. A. (ed.). Opredelitel' nasekomykh Dal'nego Vostoka SSSR. Vol. 3. No. 1. Lenindrad: Nauka Publ. P. 264 - 293 [in Russian].

Smetana A. 1978. Revision of the subfamily Sphaeridiinae of America north of Mexico (Coleoptera: Hydrophilidae) // Memoirs of the Entomological Society of Canada. Vol. 105. P. 1 - 292.

Smetana A. 1988. Review of the family Hydrophilidae of Canada and Alaska // Memoirs of the Entomological Society of Canada. Vol. 120. P. 3 - 316.