Isomira angusta (Casey, 1891)

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

Isomira angusta (Casey, 1891) Figure 40

Distribution.

Native to the Nearctic region. Previously known from Georgia and South Carolina in the United States ( Bousquet et al. 2018).

Canadian records.

Ontario: Point Pelee National Park, 23-Jun-2010 (2 exx, CBG).

Diagnostic information

(based on Aalbu et al. 2002). Body length 5.5-6.0 mm. Ventral surface of tarsi densely, finely pubescent ( Fig. 40A ). Male with sternite VIII deeply bilobed apically ( Fig. 40B ), extending beyond posterior edge of abdominal ventrite 5.

Bionomic notes.

The Canadian specimens were collected with a UV light trap in a meadow patch in deciduous forest.

Comments.

This species was originally described as the only member of the new genus Tedinus by Casey (1891). Tedinus was included as valid in the key to the genera of Alleculini by Aalbu et al. (2002) where it was separated from species of Isomira Mulsant, 1856 based on the characters listed above. In addition to the new Canadian record, three new U.S. state records were found among the DNA barcoded specimens: Florida: Destin, 25-Mar-1980 (1 ex, CNC). Oklahoma: Willis, 15-Apr-2009 (6 exx, CBG & CNC); Willis, 18-Apr-2009 (1 ex, CNC). Illinois: Pine Hills Field Station, 22-May-1967 (1 ex, CNC).

Figures

Figure 40. Isomira angusta (Casey) A anterior tarsal pubescence B male sternite 8. Scale bars: 0.5 mm (A), 1.0 mm (B).