Curculio rubidus (Gyllenhal, 1835), new to Canada

Tonnancour, Pierre de, Anderson, Robert S., Bouchard, Patrice, Chantal, Claude, Dumont, Stephane & Vigneault, Robert, 2017, New Curculionoidea (Coleoptera) records for Quebec, Canada, ZooKeys 681, pp. 95-117 : 98-99

Curculio rubidus (Gyllenhal, 1835), new to Canada

Species identification confirmed by RSA, 2015

Note.

This record comes three years after the first North American detection of the species in Michigan ( Anderson et al. 2013) and is based on the incidental finding in the Montreal area (Notre-Dame-de l’Île-Perrot) of a single specimen in 2013 and of dozens of additional specimens 2-3 years later. This widespread Palaearctic species is easily separated from all North American native Curculio species by its very small size (<3.5mm), lack of femoral teeth and association with birch, Betula L. spp. All specimens recorded in Quebec were collected in a stand of gray birch, Betula populifolia Marshall ( Betulaceae ), and most were directly beaten from gray birch. Adults are said to be active from May to October in Europe ( Hoffmann 1954; as " Balaninus undulatus Herbst, 1795"), but all specimens reported herein were captured in August (except three specimens caught on September 1, 2016). This species is also newly recorded from Ontario, based on a specimen photographed by Burke Korol in Barrie, Simcoe County, on August 21, 2015 and posted on bugguide.net (http://bugguide.net/node/view/1127147).

Specimen data.

MRC Vaudreuil-Soulanges, Notre-Dame-de-l’Île-Perrot, 10VIII2013 (17:00), beaten from Quercus rubra , P. de Tonnancour (1, CPTO); same except: 8VIII2015 (15:00), beaten from Alnus rugosa (1, CPTO), beaten from Betula populifolia (2, CPTO) or swept from various herbaceous plants in gray birch stand (1, CPTO); same except: 10VIII2015 (13:00), swept from various herbaceous plants in gray birch stand (2, CPTO); same except: 16VIII2015 (15:00), beaten from Betula populifolia (4, CCOB; 5, CMNC; 5, CNCI; 18, CPTO; 1, CRVI); 17VIII2015 (14:00) (2, CNCI; 2, CPTO); 17VIII2015 (14:00 and 18:00) (2, CMNC; 2, CNCI; 11, CPTO); 18VIII2015 (19:00) (5, CNCI; 2, CSDU; 1, CRVI); 22VIII2015 (14:00), C. Chantal (10, CCCH); 20VIII2016 (16:00), P. de Tonnancour (3, CPTO); 23VIII2016 (16:00) (1, CPTO); 28VIII2016 (16:00) (2, CPTO); 29VIII2016 (18:00) (1, CPTO); 1IX2016 (13:00) (3, CPTO).