Sitona ambiguus Gyllenhal, 1834

Balalaikins, Maksims, 2012, Latvian Entiminae (Coleoptera: Curculionidae): 3. Tribe Sitonini Gistel, 1856, Acta Biologica Universitatis Daugavpiliensis 12 (1), pp. 6-23 : 8-9

Sitona ambiguus Gyllenhal, 1834

= lineellus auct. Nec (Bonsdorff, 1785)

References: Barševskis 1992, 1993, 1997, 2002; Telnov et al. 1997; Telnov 2004; Kalniņš et al. 2007; Bukejs 2011.

Examined material: 139 specimens: Aizkraukle d.: Rīteri, 20 June 2006 (1, leg. A. Barševskis), 21 June 2006 (2, leg. A. Barševskis); Balvi d.: Plešova, 28 July 1992 (2, leg. A. Barševskis); Cēsis d.: Rauguļi, 21 August 2006 (1, near River Rauna , leg. A. Pankjāns), Taurene, 3 July 2006 (2, leg. A. Barševskis, U. Valainis and A. Pankjāns), 21 August 2006 (1, leg. A. Pankjāns); Daugavpils d.: Bebrene, 7 – 14 May 2006 (1, leg. E. Rudāns), Butišķi, 1 July 2009 (2, River Daugava valley , leg. A. Bukejs and M. Balalaikins), 29 June 2010 (4, River Daugava valley , leg. A. Bukejs and M. Balalaikins), 22 July 2010 (1, River Daugava valley , leg. A. Bukejs and M. Balalaikins), Daugavpils, 18 June 2010 (1, bank of Lake Šūņu , leg. M. Balalaikins), 3 km N Daugavpils, 1 July 1995 (1, leg. A. Barševskis), 27 May 2009 (1, inland dunes, leg. A. Bukejs), 27 May 2009 (2, inland dunes, leg. A. Bukejs), Doļnaja, Dvietes flood-land, River Daugava valley, 18 June 2010 (6, leg. M. Balalaikins and A. Bukejs), Dviete, near Kinkausku mire, 22 June 2008 (2, forest, leg. A. Barševskis), Dubna, Lielie Stradišķi house, 8 July 2006 (1, leg. A. Pankjāns), Elerne, Muravki house 24 May 2007 (5, leg. A. Pankjāns), 26 June 2005 (3, leg. A. Barševskis and K. Barševska), Ilgas, Silene NPT, 6 June 1989 (1, leg. A. Barševskis), 9 July 1992 (1, leg. A. Barševskis), 6 June 2001 (1, leg. G. Lociks), June 2002 (1, leg. A. Barševskis), 6 – 15 June 2004 (1, leg. A. Barševskis), 18 May 2005 (2, leg.A. Barševskis), 30 June 2005 (4, leg. A. Barševskis), 19 – 22 June 2006 (4, leg. E. Rudāns), 1 – 5 July 2006 (1, leg. A. Barševskis), 11 June 2007 (2, leg. U. Valainis), 9 June 2008 (2, leg. A. Barševskis and A. Soldāns), 17 June 2008 (1, leg. R. Cibuļskis), 3 July 2008 (2, leg. V. Krone), Līksna, 15 June 1997 (1, leg. R. Cibuļskis), Līksna p., near Mežciems, 15 June 2006 (1, leg. A. Barševskis), Mežciems, 16 June 2005 (1, leg. A. Bukejs), Naujene, 27 April 2007 (1, leg. K. Aksuta and M. Janovska), 25 June 2008 (2, clearing, leg. K. Aksuta), 29 April 2008 (1, River Daugava valley, leg. A. Pankjāns and U. Valainis), Nīcgale, 23 July 2010 (1, leg. M. Balalaikins), Pilskalne, 8 May 1992 (1, leg. A. Barševskis), Stropi, 27 April 2008 (1, leg. A. Bukejs), 10 August 2009 (1, leg. A. Bukejs), Šedere, Straumēni house, 1 – 3 May 2008 (6, leg. M. Janovska), Šarlote, 11 May 2008 (1, leg. K. Aksjuta), 12 July 2008 (1, leg. K. Aksjuta), Vecstropi, 3 May 2008 (1, leg. R. Cibuļskis), Viduspoguļanka, Lake Plotišķu N side, 21 April 2008 (1, pine forest, leg. U. Valainis); Gulbene d.: Gulbītis, near Lake Ušurs, May – June 2003 (2, leg. O. Koškina and A. Barševskis), 8 June 2005 (1, along marsh, leg. A. Barševskis); Jēkabpils d.: Asare, 6 August 2001 (1, leg. I. Leiskina), Ābeļi, 10 km S Jēkabpils 10 July 2009 (1, leg. M. Balalaikins), Dunava, 1 June 2002 (2, leg. A. Barševskis), 3 June 2007 (1, leg. A. Barševskis), Rubene, 21 May 1999 (1, leg. I. Leiskina), Zasa, 22 July 1998 (1, leg. I. Leiskina), 28 July 2001 (1, leg. I. Leiskina), 14 August 2001 (1, leg. I. Leiskina); Krāslava d.: 1,3 km NW Skaista, Zukulišķi, NP Dridža ezers, 14 July 2008 (1, leg. R. Cibuļskis); Liepāja d.: Pape, 23 – 25 June 1994 (1, dunes, near the sea, leg. N. Savenkovs), Upmaļi, 12 August 2008 (4, sea-coast, leg. A. Barševskis); Ludza d.: Bļaši, 23 June 2009 (1, leg. M. Balalaikins), Gagari, 16 May 2009 (8, leg. A. Bukejs), 10 May 2008 (1, leg. A. Bukejs), Šķaune, 26 July 1990 (1, leg. A. Barševskis); Madona d.: Mārciena, near Arona River, 7 July 2006 (1, leg. A. Pankjāns, A. Barševskis), Saules kalns, 7 July 2006 (1, leg. A. Pankjāns, E. Rudāns, A. Barševskis); Preiļi d.: Jersika, Kurpnieki house, 1 – 10 May 2009 (3, leg. A. Barševskis); Valmiera d.: Sprosti, 21 August 2006 (2, leg. A. Pankjāns), Tālava, 21 August 2006 (1, leg. A. Pankjāns); Ventspils d.: Moricsala NPT, 5 April 2002 (1, leg. U. Valainis), 25 June 2004 (1, leg. A. Barševskis and U. Valainis), 26 June 2004 (1, leg. A. Barševskis), 9 July 2004 (4, leg. A. Barševskis), 11 August 2006 (1, leg. E. Rudāns), 14 June 2008 (4, leg. U. Valainis), 15 July 2008 (1, leg. A. Barševskis); Talsi d.: Kaļķupe, Puiškalns, restricted area Ķaļķupe, 2 June 2009 (3, leg. A. Barševskis), 6 June 2009 (1, leg. A. Barševskis), Slītere NP, June 2002 (1, leg. A. Barševskis and U. Valainis), Slītere NP Zilie Kalni, 10 July 2004 (1, leg. R. Cibuļskis); Tukums d.: near Jaunmoku castle 16 July 2008 (2, leg. A. Barševskis).

Host plants: Trifolium , Lathyrus , Vicia ( Fabaceae ).

Phenology: IV- VIII.

General distribution: Europe, Siberia, EastAsia (Russian Far East) [ ASE].

Note: A very common species in Latvia.