Scydmaenus rufus Mueller & Kunze, 1822

Pentinsaari, Mikko, Anderson, Robert, Borowiec, Lech, Bouchard, Patrice, Brunke, Adam, Douglas, Hume, Smith, Andrew B. T. & Hebert, Paul D. N., 2019, DNA barcodes reveal 63 overlooked species of Canadian beetles (Insecta, Coleoptera), ZooKeys 894, pp. 53-150 : 53

Scydmaenus rufus Mueller & Kunze, 1822 Figure 13

Distribution.

Native to the western Palaearctic region, widespread in Europe and also reported from Algeria, Tunisia, and Lebanon ( Schülke and Smetana 2015). Adventive in the Nearctic region (Ontario, Canada).

Canadian records.

Ontario: Guelph, 17-Sep-2017 (6 exx, CBG).

Diagnostic information.

Body length: 1.4 mm. Habitus as in Fig. 13A . Aedeagus as in Fig. 13B .

Bionomic notes.

This eurytopic species occurs along forest edges and in parks, gardens, floodplains, and fields ( Koch 1989a). The Canadian specimens were sifted from a compost heap.

Comments.

As the Nearctic Scydmaenus fauna remains unrevised, it is only possible to associate Nearctic specimens with Palaearctic species through dissected males or barcodes. Three of the Canadian specimens share identical barcode haplotypes with European material, and the identification was verified by examination of the male genitalia.

Figures

Figures 13, 14. 13 Scydmaenus rufus Mueller & Kunze 13 A habitus, L. Borowiec 13 B aedeagus, ventral view 14 Scydmoraphes minutus (Chaudoir) 14 A habitus 14 B aedeagus, ventral view. Scale bars: 0.5 mm (13 A; 14 A), 0.1 mm (13 B; 14 B).