Gerris (Gerris) gibbifer Schummel, 1832

Berchi, Gavril Marius, Cianferoni, Fabio, Csabai, Zoltán, Damgaard, Jakob, Olosutean, Horea, Ilie, Daniela Minodora, Boda, Pál & Kment, Petr, 2018, Water striders (Heteroptera: Gerromorpha: Gerridae) of Romania with an update on the distribution of Gerris gibbifer and G. maculatus in southeastern Europe, Zootaxa 4433 (3), pp. 491-519 : 501-502

Gerris (Gerris) gibbifer Schummel, 1832

Material examined. HUNGARY: Somogy County: Barcs ( Középrigóc ), 09.iii.1979, leg. S. Horvatovich, det. T.

Vásárhelyi, revid. Z. Csabai, G.M. Berchi & F. Cianferoni, 1 ♀ (ma) ( JPMH). Vas County: Kercaszomor (Szomoróc) [small puddle near stream Kerca ] , 11.iv.2014, leg. P. Boda, det. P. Boda, G.M. Berchi & F. Cianferoni, 1 ♂ (ma) 1 ♀ (ma) ( PBDH). SLOVAKIA: Bardejov District: Cigeľka [tributary stream of Topľa ], 49.4137°N 21.1455°E , 01.vii.2015, leg. P. Boda, det. P. Boda, G.M. Berchi & F. Cianferoni, 1 ♂ (ma) 1 ♀ (ma) ( PBDH). Liptovský Mikuláš District: Važec, Solisko Mountain [water] , 02.viii.1980, leg. I. Kovář, 1 ♂ (ma) ( NMPC). Martin District: Malá Fatra Mountains, Trebostovo , Trebostovská dolina (6978), 800–1200 m a.s.l. , 16.iv.2003, leg. H. Poláček & M. Fikáček, 4 ♂♂ (ma) 2 ♀♀ (ma) ( NMPC). Nové Mesto nad Váhom District: Lúka nad Váhom (7373) [puddle on road] , 23.iv.2000, leg. M. Mantič, 1 ♂ (ma) 1 ♀ (ma) ( MMHC). Poprad District: Hôrka (6988) [streamlet] , 18.v.2002, leg. M. Mantič, 1 ♂ (ma) ( MMHC); Vikartovce [spring], 49°00ʹ46ʺN 20°08ʹ37ʺE, 944 m a.s.l. , 09.vii.2012, leg. P. Boda, det. P. Boda, G.M. Berchi & F. Cianferoni, 1 ♂ (ma) ( PBDH). Revúca District: Muránska planina Mountains, Muráň, meadow at PR Ľadová jama, 1200 m a.s.l. , 08.v.2000, leg. P. Šmarda, 1 ♂ (ma) 1 ♀ (ma) ( NMPC). Rožňava District: Rejdová [stream], 48.794786°N 20.291069°E , 11.vii.2012, leg. & det. P. Boda, 1 ♂ (ma) ( PBDH); Slovenský raj Mountains, Stratená, [brooks under Čierna hora Mountain ] , 31.v.1967, leg. R. Rozkošný, 1 ♀ (ma) ( MUBC). Ružomberok District: Ľubochňa, V. Štefanovce (6981a) , 27.vi.2009, leg. J. Cunev, 1 ♂ (ma) 1 ♀ (ma) ( JCNS); Nízké Tatry Mountains, Liptovská Osada, Ramžová , leg. L. Hoberlandt, 1 ♀ (ma) ( JCNS). Sobrance District : Remetské Hámre , 13.v.1976, leg. J. Davidová, 1 ♀ (ma) ( NMPC). Stropkov District: Bžany – Valkov (6995) [small reservoir] , 07.vii.2002, leg. M. Mantič, 2 ♂♂ (ma) ( MMHC). Tvrdošín District: Vitanová env. (6684d) , 31.vii.2009, leg. J. Cunev, 1 ♀ (ma) (NMPC).

Remarks. No records have been confirmed for Romania. All the specimens examined, recorded as G. gibbifer by Horváth (1897), Benedek (1970), Schneider (1973) and Kis (1976), from this country have been proven to belong to G. maculatus (see below). Furthermore, the material by Kertész (1890, 1901) and Szilády (1908) was unavailable for review, while specimens by Bucșa (1970), Ilie & Olosutean (2009), Olosutean et al. (2009) and Olosutean & Ilie (2010c) have been lost. The records of G. gibbifer by Horváth (1897) and Csongor (1956) in Hungary also refer to G. maculatus , whereas specimens by Vellay (1899), Kondorosy & Harmat (1997) and Kondorosy & Földessy (1998) were not available for review. Horváth’s (1897) record of G. gibbifer from Slovenia also refers to G. maculatus , as well as all the material seen from Albania, Croatia, Greece, Macedonia, Montenegro, Serbia, European Turkey, Algeria and Tunisia (see below). Some other records of G. gibbifer from Serbia even belong to other taxa (e.g., the more distantly related G. thoracicus ).

Gerris gibbifer is probably univoltine ( Nieser 1981) and monomorphic long-winged, rarely short-winged (submacropterous) ( Andersen 1993).

Distribution. West Palaearctic and widespread in western and central Europe ( Andersen 1995; Cianferoni et al. 2013); most eastern records and those from north Africa are doubtful and probably refer to G. maculatus (see Andersen 1995, Taybi et al. in prep.). In southeastern Europe, its range reaches northern Croatia, northern Hungary and southwestern Ukraine ( Drogvalenko & Konovalov 2016, this paper) (see Fig. 11 ).

Figures

FIGURE 11. Distribution of Gerris maculatus Tamanini, 1946 (black dots) and G. gibbifer Schummel, 1832 (white squares) in southeastern Europe. Blank shapes represent published records, question marks represent dubious published records of G. gibbifer and solid shapes represent records from this study. Grey colour areas were not subject of this review.