New data on the fauna of Heteroceridae (Coleoptera) of the Republic of Khakassia (Eastern Siberia)

Keywords: Augyles, Coleoptera, Eastern Siberia, new records, Heterocerus, Heteroceridae, Russia

The recent status of the family Heteroceridae in Siberia is discussed and the main references are given. From ten species of the Heteroceridae, which have been reported for the fauna of Siberia, only one species Heterocerus parallelus Gebler, 1830 was previously recorded in southern Khakassia. Here we presented six species from two genera of the family Heteroceridae (Coleoptera), which we collected in the Republic of Khakassia (Eastern Siberia, Russia).  

Introduction

The variegated mud-loving beetles (Heteroceridae) is a small family of Coleoptera belonging to the superfamily Byrrhoidea. Family Heteroceridae includes 5 genera (King et al. 2011) and 349 recent species (authors data). Adults and larvae inhabit the banks of various water bodies along the narrow ground strip at water edge, where they build tunnels in sand or other wet substrates. The imago often flies towards light at night. 
According to modern catalogues and articles, the fauna of Heteroceridae in Russia comprises 22 species of two genera (Mascagni 2006(Mascagni , 2016;;Sazhnev 2016;Sazhnev and Kozminykh 2019). The fauna and distribution of the family in Siberia is still not well studied and the available data are presented in old faunistic papers (Gebler 1830;Sahlberg 1880;Heyden 1880Heyden , 1881;;Zaitzev 1908;Jakobson 1913). 
In recent publications, the information about Heteroceridae species (for Siberia) is available in articles dedicated to arthropods inhabited salty soils in the south of Siberia (Mordkovich and Volkovintser 1965;Mordkovich and Lyubechanskii 2017) and some specialized faunistic papers (Kirejtshuk 2001;Efimov and Litovkin 2015;Sazhnev 2016Sazhnev , 2018aSazhnev , 2018b)). In the second edition of the Catalogue of Palaearctic Coleoptera (Mascagni 2016), Augyles flavidus (Rossi 1794) was reported for Siberia and the Far East; however, these recording are erroneous. Augyles flavidus is distributed in Mediterranean, North Africa, Transcaucasia, south of European part of Russia, western Central Asia, and not found in Siberia. 
There are ten species of the Heteroceridae, which have been recorded for the fauna of Siberia (Strien 1980;Mascagni 2006;Sazhnev 2016;Efimov and Litovkin 2015), but only one species Heterocerus parallelus Gebler, 1830 was recorded in the southern Khakassia (Mordkovich and Volkovintser, 1965). 

Material and methods

The variegated mud-loving beetles were collected in the upper part of the Yenisei River basin (Republic of Khakassia, Abakan city, Abakan River valley, Figs 1,2) by means of BLB-T5/4W Ultraviolet Black Light Bulb with 2-3 hours of exposure in May 27-October 13, 2018 and FLU10 T8 G13/18W with 2013 hours of exposure in March 31-October 10, 2019. The material was stored in 95% ethanol or alcoholformalin. 
Second author collected the majority of examined specimens; all specimens are deposited in collection of the Papanin Institute for Biology of Inland Waters of the Russian Academy of Sciences (IBIW, Borok, Yaroslavl Region, Russia; depository and collector not listed in the text). Map was created in SimpleMappr online service (www.simplemappr.net). July 2019; 21:00-3:00 hours • 1 female; same locality; 8-9 July 2019; 21:00-1:00 • 1 male, 1 female; same locality; 22-23 July 2019; 21:00-7:00 hours • 1 female; same locality; 27-28 Aug. 2019; 20:00-7:00 hours. 
Distribution. The species is known from Asia: China (Shaanxi) (Mascagni 2003), Mongolia (Charpentier 1979;Mascagni 2006Mascagni , 2016;;Prokin et al. 2020), Russia (south of Eastern Siberia) (Sazhnev 2016(Sazhnev , 2018a). The species is recorded for the Republic of Khakassia for the first time. 

Genus Heterocerus Fabricius, 1792

Heterocerus fenestratus (Thunberg, 1784) Material examined. RUSSIA • 1 female; Republic of Khakassia, Abakan, Abakan River valley; 53°42'49.5"N, 91°30'19.6"E • 1 female; same locality; 15 June 2019; 21:00-00:00 hours • 1 female; same locality; 20 June 2019; 20:00-00:00 hours • 1 female; same locality; 29-30 June 2019 • 2 males, 2 females; same locality; 6-7 July 2019; 21:00-1:00 hours • 1 female; 7-8 July 2019; 21:00-3:00 hours • 1 male; same locality; 8-9 July 2019; 21:00-1:00 hours • 1 female; same locality; 13-14 July 2019; 21:00-6:00 hours • 1 female; same locality; 20-21 July 2019; 21:00-6:00 hours • 1 male, 1 female; same locality; 22-23 July 2019; 22:00-4:00 hours • 2 females; same locality; 27-28 July 2019; 22:00-7:00 hours • 1 female; same locality; 28 July 2019; 22:00-23:00 hours • 2 females; same locality; 29-30 July 2019; 21:00-7:00 hours • 1 female; same locality; 4-5 Aug. 2019; 22:00-8:00 hours. 
Distribution. It is a widespread Holarctic species, also known from the Oriental region: Laos, Philippines, Thailand, Vietnam (Charpentier 1979;Mascagni 2003Mascagni , 2006Mascagni , 2016;;King and Lago 2012) and the Southern Hemisphere (Chile) (Sazhnev 2019). The species is recorded for the Republic of Khakassia for the first time. 

Heterocerus fossor Kiesenwetter, 1843

Material examined. RUSSIA • 1 male; Republic of Khakassia, Abakan, Abakan River valley; 53°42'49.5"N, 91°30'19.6"E; 24 June 2018 • 1 female; same locality; 30 June 2018 • 1 female; same locality; 12 June 2019 • 2 females; same locality; 27-28 July 2019; 22:00-7:00 hours • 1 male; same locality; 27-28 Aug. 2019; 20:00-7:00 hours. 
Distribution. This species distributed in Europe, Turkey, Iran, Kazakhstan, Tajikistan, southern part of Western and Eastern Siberia (Mascagni 2006(Mascagni , 2016)). The species is recorded for the Republic of Khakassia for the first time. 

Heterocerus fusculus fusculus Kiesenwetter, 1843

Material examined. RUSSIA • 1 male; Republic of Khakassia, Abakan, Abakan River valley; 53°42'49.5"N 91°30'19.6"E; 30 June 2018 • 1 male; same locality; 2 July 2018. 
Distribution. The species is known from Europe, Turkey, Iran, Central Asia (Kazakhstan, Kyrgyzstan, Turkmenistan, Uzbekistan), south of Siberia to Cisbaikalia (Mascagni 2006(Mascagni , 2016;;Prokin et al. 2016;Litovkin and Sazhnev 2018). The species is recorded for the Republic of Khakassia for the first time. 

Heterocerus obsoletus Curtis, 1828

Material examined. RUSSIA • 1 female; Republic of Khakassia, Abakan, Abakan River valley; 53°42'49.5"N, 91°30'19.6"E; 30 June 2018 • 1 female; same locality; 4-5 June 2019; 22:00-1:00 hours • 1 female; same locality; 7-8 July 2019; 21:00-3:00 hours. 
Distribution. It is known from Europe, Southwest (partly) and Iran, Central Asia (Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan), Mongolia, south of Western and Eastern Siberia (Zaitzev 1908;Charpentier 1979;Strien 1980;Mascagni 2003Mascagni , 2006Mascagni , 2016;;Efimov and Litovkin 2015;Prokin et al. 2016;Litovkin and Sazhnev 2018;Prokin et al. 2020). The species is recorded for the Republic of Khakassia for the first time. 

Figure 1 .

 1 Figure 1. Collecting site of the variegated mud-loving beetles in the Abakan River valley (Abakan city, 53°42'49.5"N, 91°30'19.6"E). 


Figure 2 .

 2 Figure 2. Sampling localities: squares -Shirinsky distr., Belyo Lake; circles -Abakan, Abakan River valley. 


Taxonomy Family Heteroceridae Macleay, 1825 Genus Augyles Schiødte, 1866 Augyles interspidulus (Charpentier, 1979)

  
	Material examined. RUSSIA • 2 males; Republic of Khakassia, Abakan, Abakan
	River valley; 53°42'49.5"N, 91°30'19.6"E; 22 June 2018 • 3 males, 5 females; same
	locality; 24 June 2018 • 2 males, 1 female with 42 eggs; same locality; 28 June 2018
	• 1 female; same locality; 29 June 2018 • 1 male; same locality; 29-30 June 2018; at
	night • 3 females; same locality; 30 June 2018 • 4 males, 8 females; same locality; 1
	July 2018 • 6 males, 3 females; same locality; 2 July 2018 • 4 males, 4 females; same
	locality; 3 July 2018 • 2 females; same locality; 4-05 June 2019; 22:00-1:00 hours •
	1 female; same locality; 15 June 2019; 21:00-00:00 hours • 2 females; same local-
	ity; 18-19 June 2019 • 2 males, 3 females; same locality; 25 June 2019; 22:00-00:00
	hours • 2 females; same locality; 28-29 June 2019; 22:00-6:00 hours • 4 males, 2
	females; same locality; 6-7 July 2019; 21:00-1:00 hours • 1 male; same locality; 7-8

Acknowledgements

A. Sazhnev was partially supported by the Russian State Assignment (aaaa-a18-118012690105-0). The authors declare no competing interests. 


Heterocerus parallelus Gebler, 1830

Material examined. RUSSIA • 1 male, 3 females; Republic of Khakassia, Shirinsky distr., Belyo Lake (Fig. 2); 54°39'00.0"N, 90°10'48.0"E; 382 m a.s.l.; 1-3 July 2011; K. Tomkovich leg.; IBIW; «yellow plates» • 1 male; Abakan, Abakan River valley; 53°42'49.5"N, 91°30'19.6"E; 19-20 July 2019; 22:00-2:00 hours. 
Distribution. This species distributed in the southern part of Europe, Turkey, Iran, Lebanon, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Mongolia, south of Western and Eastern Siberia (Zaitsev 1946;Mascagni 2006Mascagni , 2016;;Litovkin and Sazhnev 2018;Prokin et al. 2020). The species was known from the southern part of the Republic of Khakassia (Mordkovich and Volkovintzer 1965).
Alexey S Sazhnev, Sergey V Dragan
New data on the fauna of Heteroceridae (Coleoptera) of the Republic of Khakassia (Eastern Siberia)