Contribution to the Knowledge of the Aquatic Beetle Genus Berosus Leach (Coleoptera: Hydrophilidae) in Serbia - Page 03

Berosus (Berosus) signaticollis Charpentier, 1825

Biology: In stagnant rather shallow, sometimes temporary fresh water in the sparsely vegetated shore zone.

General distribution: In Europe ranging from the British Isles and South Scandinavia to the Mediterranean (including North Africa), West and Central Europe to Siberia.

Literature data: Požarevac, without precise data - (EQ14), 1915, leg. Moric Hilf; Belgrade, without precise data - (DQ56), 1928, leg. Stolz; Ruma, without precise data - (DQ08), 1993, leg. Schwieger; Morović, without precise data - (CQ58), 1993, leg. Zoufal (Schödl, 1993); Ram - (EQ26), 1957, 1 spec., leg. Jovan Stančić (Stančić, 2013).

Material examined: Brickyard Bačka Opeka, Subotica - (CS90), 03 Apr 2011, 1♀; Ostrovac, Salaš Noćajski - (CQ63), 07 Apr 2011, 1♀, leg. Mihajlo Stanković; Batve, Ravnje - (CQ77), 14 May 2011, 1♀, leg. Mihajlo Stanković; Brickyard Ker, Subotica - (CS90), 15 May 2011, 2♀; Ciglana Bačka opeka, Subotica - (CS90), 05 Apr 2012, 3♀, 3♂, 7 spec.; Hrvatski Majur, Subotica - (CR99), 11 Apr 2012, 1♂, 6 spec.; Lake Kelebija - Centre, Kelebija - (CS91), 14 Apr 2012, 1 spec.; Lake Kelebija - Centre, Kelebija - (CS91), 16 Apr 2012, 1 spec.; Petrovaradin Swamp, Petrovaradin - (DR10), 20 Apr 2012, 2♀ 1♂ 2 spec.; Rakovac, Fruška Gora - (DR00), 20 Apr 2012, 15 spec.; Pig Farm, Banovo polje - (CQ77), 23 Apr 2012, 1 spec.; Skelice, Radenković - (CQ87), 23 Apr 2012, 2 spec.; Visitor Centre, Zasavica I - (CQ87), 23 Apr 2012, 1 spec.; Bubanj Pond, Kragujevac - (DP97), 26 Apr 2012, 1♂; Bakulja, Bogojevo - (CR44), 23 Jul 2012, 1♂; Weekend Resort, Bogojevo - (CR54), 23 Jul 2012, 1 spec.; Vrdnik, Fruška Gora - (DQ09), 2012, 1 spec., leg. Dragiša Savić; Adica, Ada - (DR37), 02 May 2013, 2 spec.; Vilovo Pond, Vilovo - (DR31), 02 May 2013, 1 spec.; Visitor Centre, Hajdukovo - (DS00), 09 Aug 2013, 1 spec.; Small lake next to Čikera, Čantavir - (CR99), 19 May 2014, 2 spec.; Majdan Pond, Kelebija - (CS91), 20 May 2014, 1 spec.; Tikvara, Kovilj - (DR20), 23 May 2014, 1 spec.; wetland, Selevenjska Pustara - (DS11), 07 Aug 2015, 4 spec. All specimens were collected by sweeping among submerged aquatic vegetation or attracted to UV lamp.

Remarks: The species is widely distributed in Serbian lowlands and locally abundant.

Berosus (Enoplurus) frontifoveatus Kuwert, 1888

Biology: Thermophile and partly halophile species that inhabits shallow stagnant waters; abundant in aquatic vegetation.

General distribution: Wide Palearctic distribution from Netherlands to Middle Asia.

Literature data: Požarevac, without precise data - (EQ14), leg. Moricz Hilf; Horgoš, without precise data - (DS21), leg. Szabo-Patay; Novi Bečej, without precise data - (DR34), leg. Mandl; Novi Sad, without precise data - (DR01), leg. Mandl (Schödl, 1991).

Material examined:

Brickyard Bačka opeka, Subotica - (CS90), 03 Apr 2011, 2 ♂; Brickyard Ker, Subotica - (CS90), 13 Apr 2011, 1♀; Majdan Pond, Kelebija - (CS91), 21 May 2011, 1♂.; Bela Pond, Stanišić - (CR58), 23 Jun 2011, 1♀ 1♂.; Skelice, Radenković - (CQ87), 17 Aug 2011, 1♀; Valjevac, Zasavica I - (CQ87), 18 Aug 2011, 3♀ 3♂; Bukvać, Subotica - (CS91), 31 Aug 2011, 2 spec.; Bukvać, Subotica - (CS91), 31 Aug 2011, 1♀, 3 spec., leg. Jožef Dožai; Radanovac - poligon, Subotica - (DS00), 10 Sep 2011, 1 spec.; Majdan Pond, Kelebija - (CS91), 12 Sep 2011, 2♂; Akumulacija Međeš, Fruška Gora - (DQ19), 07 Oct 2011, 1♂ 1♀; Brickyard Bačka Opeka, Subotica - (CS90), 05 Apr 2012, 2♂; Hrvatski Majur, Subotica - (CR99), 11 Apr 2012, 9 spec.; Lake Kelebija - Center, Kelebija - (CS91), 14 Apr 2012, 2 spec.; Petrovaradin Swamp, Petrovaradin - (DR10), 20 Apr 2012, 1 spec.; Visitor Centre, Zasavica I - (CQ87), 23 Apr 2012, 1 spec.; Čodakut, Kanjiža - (DS20), 19 May 2012, 2♀, 2♂, 18 spec.; Valjevac, Zasavica I - (CQ87), 19 Jun 2012, 69 spec.; Trebljevine, Banovo Polje - (CQ77), 20 Jun 2012, 4 spec.; 20 Jul 2012, 8 spec.; Bakulja, Bogojevo - (CR44), 23 Jul 2012, 1♂; Bogojevo, Weekend Resort - (CR54), 23 Jul 2012, 84 spec.; Slano Kopovo, Novi Bečej - (DR35), 2012, 1♂, leg. Dragiša Savić; Vilovo Pond, Vilovo - (DR31), 02 May 2013, 6 spec.; Tavankutska Forest, Tavankut - (CS80), 20 Jul 2013, 36 spec.; Visitor Centre, Hajdukovo - (DS00), 09 Aug 2013, 5 spec.; Šupljak School, Lake Ludaško - (DS00), 16 Aug 2013, 1 spec.; Tikvara, Kovilj - (DR20), 23 May 2014, 1 spec.; Čodakut, Kanjiža - (DS20), 19 Jun 2015, 22 spec.; wetland, Selevenjska Wetlands - (DS11), 07 Aug 2015, 37 spec.; Medura Pond, Riđica - (CR59), 13 Aug 2015, 51 spec. Specimens were collected using UV lamp and by sweeping among submerged aquatic vegetation. A detail of the pronotum of B. spinosus and B. frontifoevatus is shown in Fig. 4.

Remarks: The species is widely distributed in Serbian lowlands, often highly abundant where it lives.

 

Fig04
Figure 4: Detail of the pronotum of Berosus spinosus (A) and Berosus frontifoveatus (B) (photo by Gabor Mesaroš).

 

Berosus (Enoplurus) spinosus (Steven, 1808)

Biology: A halobiontic species, living exclusively on salt marshes, in brackish, often shallow and sparsely vegetated pools.

General distribution: Widespread along the European coast, from Fennoscandia to the Atlantic coast of Western Europe, southwards to the Mediterranean; also around the Caspian Sea and in saline inland localities in Central and Southeastern Europe.

Material examined: Krivaja, Mali Beograd - (CR98), 20 Jul 2012, 1♀; Visitor centre, Hajdukovo - (DS00), 09 Aug 2013, 1♀; Čodakut, Kanjiža - (DS20), 19 Jun 2015, 2 spec.; wetland, Selevenjska Pustara - (DS11), 08 Jul 2015, 18 spec.; Medura Pond, Riđica - (CR59), 13 Aug 2015, 1 spec. All specimens were attracted to UV light.

Remarks: The species is rare and not so abundant in Serbia; it can be found in very localized habitats as well (its typical habitats are shown in Fig. 5).

 

Fig05
Figure 5: Medura Pond near Riđica, a sampling site with typical habitats of Berosus spinosus.

 

Our investigations confirmed the presence of 6 species belonging to the genus Berosus in Serbia. Berosus geminus has proven to be a new species for the fauna of Serbia.

The most frequent species in Serbia is B. frontifoveatus. In Hungary a total of 7 Berosus species were registered (Csabai, 2003), while the number of species in Turkey is 14 (İncekara et al, 2011).

Considering the species' habitat selection, it was found that the adults of the Berosus species in Serbia primarily inhabit lentic habitats in lowlands (small reservoirs, ponds and pools). Such stagnant waters are characterized by silt or clay as a dominant substrate mainly covered with dense submerged or emergent aquatic macrophytes. The species of the genus Berosus are absent in moving waters in Serbia. With regard to all the species, B. signaticollis was found at somewhat higher altitudes (Vrdnik, Fruška Gora, 189 m a.s.l.; Bubanj Pond, Kragujevac 174 m a.s.l.).

There are several Berosus species that have not yet been recorded in Serbia but due to the findings from the surrounding countries, their presence in Serbia could be expected. According to Hebauer & Klausnitzer (1998) and Schödl (1991), Berosus (Enoplurus) fulvus Kuwert, 1888 was recorded in Hungary near the Serbian border, but during our investigations we have not found it. Berosus (Berosus) hispanicus Kuster, 1847 is a Western Palearctic species distributed in the Mediterranean region. According to Schödl (1991) it was registered in our neighbouring countries (Croatia, Austria and the Czech Republic), therefore its presence in Serbia is not excluded. Berosus (Enoplurus) jaechi Schodl, 1991 is in the List of Fauna Europea and the Catalogue of Palearctic Coleoptera (Hansen, 2004; Hansen et al., 2013), but in these literature sources Serbia is represented together with Montenegro. According to Schödl (1991), B. jaechi is distributed in the Mediterranean region and the author mentions its occurrence near Ulcinj (Montenegro). Considering the species biology and its ecological preferences, the presence of B. jaechi is highly unlikely in Serbia.

Acknowledgement

The authors would like to thank Mr. Mihajlo Stanković, Mr. Dragiša Savić and Mr. Jožef Dožai for providing material examined in the study.