Chlaenius (Chlaeniellus) lineellus Motschulsky 1859

Chlaenius (Chlaeniellus) lineellus Motschulsky, 1859

(Figs 1–6)

Chlaenius lineellus Motschulsky, 1859: 488; type locality: “environs du fl. Amour, depuis la Schilka jusqu’à Nikolaevsk”.

Chlaenius circumductus A. Morawitz, 1862a: 246 [= A. Morawitz, 1862b: 201]; type locality: “Ussuri”, syn. nov.

Chlaenius (Chlaeniellus) insularis Kryzhanovskij, 1973: 72–73, figs 5, 7, 9;

type locality: “southwest Sakhalin, p. Bryansk ” (labeled as holotype); a name preoccupied by Chlaenius (Haplochlaenius) insularis Uéno, 1964.

Chlaenius (Chlaeniellus) insulicola Lorenz, 1998: 12; a new replacement name for Chlaenius insularis Kryzhanovskij, 1973.

Type material. Lectotype of Chlaenius lineellus, designated herewith (Figs 1 & 2): male, labeled “Daur. m.” [red rectangle; Motschulsky’s handwriting], “ Chlaenius lineellus Motsch. Daur. mer.” [white rectangle with a black frame; Motschulsky’s handwriting], [red rectangle], “Lectotype Chlaenius lineellus Motschulsky, 1859, Sundukov Yu. and Makarov K. des. 2022” [red rectangle; printed] (ZMU).

Holotype of Chlaenius circumductus (Figs 3 & 4): male, labeled “Ussuri 173-1” [red rectangle with a black frame; Morawitz’s handwriting], “173. circumductus Mor. ” [white rectangle with a black frame; Morawitz’s handwriting], “ Holotypus ” [red rectangle; printed] (ZISP).

Five paratypes of Chlaenius insularis: male (Figs 5 & 6), labeled “Kuril. ostr. 10/ vii—1962 Col. Azarov ” [white rectangle; printed, date and surname handwritten], “o. Kunashir, okr. oz. Peschanoe, from a “grebe” nest lying on the ground.” [white rectangle; handwritten], “Paratypus Ch. insulicola sp.n. Kryzhanovskij det.” [red rectangle; Kryzhanovskij’s handwriting] (ZISP); male, labeled “ South. Sakhalin, p. Bryanskoe, 26.7.71, Molodova ” [white rectangle; handwritten], “Paratypus Chlaenius insularis sp.n. Kryzhanovskij des.” [red rectangle; Kryzhanovskij’s handwriting] (ZISP); male, labeled “ Yu. Sakhalin, p. Bryanskoe, 26.7.71, Molodova ” [white rectangle; handwritten], “ Paratypus Chlaenius insularis sp.n. Kryzhanovskij des.” [red rectangle; Kryzhanovskij’s handwriting] (ZISP); female, labeled “ Yu. Sakhalin, p. Bryanskoe, 26.7.71, Molodova ” [white rectangle; handwritten], “ Paratypus Chlaenius insularis sp.n. Kryzhanovskij des.” [red rectangle; Kryzhanovskij’s handwriting] (ZISP); female, labeled “ Yu. Sakhalin, p. Bryanskoe, 26.7.71, Molodova ” [white rectangle; handwritten], “ Paratypus Chlaenius insularis sp.n. Kryzhanovskij des.” [red rectangle; Kryzhanovskij’s handwriting] (ZISP).

Comparative material. Jewish Autonomous Region: Zabelovskiy Nature Reserve, Lake Zabelovskoe, 3– 4.IX.2005, V. Kuznetsov leg., 1 ex (FEB). Khabarovsk Territory: Khabarovsk, 19.V.1970, A. Ryabukhin leg., 1 ex (KTM); ibid., bank of Amur Channel, 14.VI.1997, E. Novomodnyi leg., 2 ex (KTM); ibid., 28.VIII.1999, E. Novomodnyi leg., 1 ex (KTM); ibid., 30.VI.2000, E. Novomodnyi leg., 2 ex (KTM); ibid., Industrialnaya, 3.V.1997, E. Novomodnyi leg., 1 ex (KTM); ibid., early July 1997, E. Novomodnyi leg., 3 ex (KTM); ibid., 30.V.1998, E. Novomodnyi leg., 1 ex (KTM); ibid., 2.VI.1998, E. Novomodnyi leg., 1 ex (KTM); Komsomolsk-on-Amur, “Silinsky Forest” Natural Monument, 11–20.VIII.2015, O. Kuberskaya leg., 1 ex (KSZ); Lake Udyl’, Malaya Silasu River, 2010, O. Kuberskaya leg., 1 ex (KSZ); Komsomolsky Nature Reserve, Shargol Channel near Delfin Base, 22.VII.2021, O. Kuberskaya leg., 1 ex (KSZ). Primorsky Territory: Sikhote-Alinsky Nature Reserve, Lake Blagodatnoe, 17–22.VI.1998, Yu. Sundukov leg., 2 ex (FEB); ibid., 8–12.VII.1999, Yu. Sundukov leg., 1 ex (FEB); Dalnegorsk, 13.VII.1986, V. Grachev & V. Zherikhin leg., 1 ex (MPU); near Kavalerovo, 2.VII.1974, N. Zamesov leg., 1 ex (MPU); Lake Khanka, Mount Luzanova Sopka, 8 km N of Sivakovka, 16.VI.2000, V. Medvedev leg., 1 ex (FEB); ibid., 7–8 km NW of Voskresenka, 3.IX.2019, Yu. Sundukov leg., 1 ex (FEB); hunting base 10 km W of Chernigovka, Ilistaya River, 13.VIII.2001, V. Kuznetsov leg., 1 ex (FEB); Beltsovo, lower reaches of Arsenyevka River, 28.VII.2003, Yu. Sundukov & V. Shokhrin leg., 2 ex (FEB); 5–6 km N of Beltsovo, left bank of Ussuri River, 29.VII.2003, Yu. Sundukov & V. Shokhrin leg., 3 ex (FEB); Chuguevsky District, floodplain of Ussuri River near Koksharovka, 23–24.VII.2004, Yu. Sundukov & L. Sundukova leg., 3 ex (FEB); ibid., floodplain of Pavlovka River near Uborka, 29.VII.2004, Yu. Sundukov & L. Sundukova leg., 2 ex (FEB); Ivanovka, right bank of Ilistaya River, 31.VII.2003, Yu. Sundukov leg., 1 ex (FEB); Otradnoe, upper reaches of Ilistaya River, 31.VII.2003, Yu. Sundukov leg., 2 ex (FEB); near Lazo, Lazovka River valley, 5–16.VI.1997, Yu. Sundukov leg., 4 ex (FEB); ibid., 8–10.V.1998, Yu. Sundukov leg., 8 ex (FEB); ibid., 6–7.V.1998, Yu. Sundukov leg., 1 ex (FEB); ibid., 10–15.VII.2001, Yu. Sundukov leg., 1 ex (FEB); Lazovsky Nature Reserve, Proselochnaya Bay, 1–7.VII.2006, Yu. Sundukov leg., 2 ex (FEB); Ussuriysky District, Kondratenovka, 13–18.VII.1991, P. Udovichenko leg., 1 ex (MPU); Ussuriysky Nature Reserve, Komarovo-Zapovednoe, bank of Komarovka River, 27.V.1999, Yu. Sundukov leg., 2 ex (FEB); ibid., 23– 28.VII.1999, Yu. Sundukov leg., 3 ex (FEB); Kaymanovka, floodplain of Barsukovka River, 12–13.VIII.1998, Yu. Sundukov leg., 1 ex (FEB); Khasansky District, Barabashevka River near Barabash, 7–9.VIII.2020, Yu. Sundukov leg., 2 ex (FEB); Khasansky District, floodplain of Narva River ~ 1.5 km upstream Siniy Utes, 25.V.2021, Yu. Sundukov leg., 1 ex (FEB). Sakhalin Island: Belaya River near Sokol, 9.VIII.2022, Yu. Sundukov & L. Sundukova leg., 1 ex (FEB); Yuzhno-Sakhalinsk, Botanical Garden FEB RAS, 17–18.V.2017, Yu. Sundukov leg., 1 ex (FEB); Srednyaya River near Troitskoe, 29.VII.2022, Yu. Sundukov & L. Sundukova leg., 4 ex (FEB); Susuya River east of Troitskoe, 17.VI.2018, Yu. Sundukov leg., 2 ex (FEB); ibid, 31.VII.2022, Yu. Sundukov & L. Sundukova leg., 2 ex (FEB); Vakhrushevka River near Troitskoe, 4.VIII.2018, Yu. Sundukov & L. Sundukova leg., 10 ex (FEB); Lyutoga River south of Petropavlovskoe, 6.VIII.2022, Yu. Sundukov & L. Sundukova leg., 3 ex (FEB). Kuril Islands, Kunashir Island: near Yuzhno-Kurilsk, 1.5 km N to Otradnoe, 31.V.2017, Yu. Sundukov leg., 1 ex (FEB); ibid., Serebryanka River, 26.VI.2018, Yu. Sundukov leg., 1 ex (FEB); Tretiyakov Stream near Tretiyakovo, 30.VI.2018, Yu. Sundukov & L. Sundukova leg., 1 ex (FEB); W outskirts of Dubovoe, 25.VII.2017, Yu. Sundukov & L. Sundukova leg., 1 ex (FEB); Belozerskie Lakes, 19.VIII.2017, Yu. Sundukov leg., 1 ex (FEB).

Remarks. We have found only one specimen of Chlaenius lineellus labeled as such (Fig. 2) by Motschulsky’s hand in the collection of Victor Motschulsky (ZMU). The beetle badly suffered from skin beetle larvae in completely lacking the head, prothorax and legs, with only the mesothorax and metathorax with elytra, hindwings, and fragments of coxae and trochanters, as well as a hollow abdomen without genitalia being preserved (Fig. 1). The structure and microsculpture of the anal sternite of the abdomen suggest that was a male.

Chlaenius lineellus was described without specifying the number of specimens, their sexes, and the exact places of collection (Motschulsky 1859). Since Motschulsky’s catalog included material from the entire Amur basin, ranging from Shilka River in Transbaikalia (= Dauria) to the town of Nikolaevsk-on-Amur at the mouth of Amur River, and, geographically, Shilka River belongs to Dauria, we consider it possible to herewith designate the above specimen from “Daur. mer.” (= Dauria meridionalis) as the lectotype of Chlaenius lineellus Motschulsky, 1859.

Comparing the above preserved fragment with species of the subgenus Chlaeniellus Reitter, 1908 from North Asia, it appears safe to say that Ch. lineellus and Ch. circumductus are one and the same species (Figs 1, 3, 5). Since the name by Motschulsky has time priority and it has repeatedly been mentioned in scientific literature (Keleinikova 1976; Kirschenhofer 2003, 2017; Sundukov & Makarov 2020, etc.), according to article 23.9.1. (ICZN 1999), Chlaenius circumductus A. Morawitz, 1862 is formally to be considered as a junior subjective synonym of Chlaenius lineellus Motschulsky, 1859.

Sundukov and Makarov (2019) have recently shown the record of the Japanese Chlaenius (Haplochlaenius) insularis (Uéno, 1964) from Sakhalin as being erroneous. Apparently, the confusion arose from the information contained a publication on the fauna of South Sakhalin, where that Japanese species mistakenly appeared (Vertyankin & Shabalin 2013) instead of Ch. insularis Kryzhanovskij, 1973 (= Ch. lineellus). That was probably the reason for adding Ch. insularis (Uéno, 1964) to the fauna of Sakhalin in the Catalogue of Palaearctic Coleoptera (Kirschenhofer 2017).