Lathrobium geminum Kraatz, 1857

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

Lathrobium geminum Kraatz, 1857 Figure 15

Distribution.

Native to the Palaearctic region, distributed from Europe to the Far East of Russia ( Schülke and Smetana 2015). Adventive in the Nearctic region (British Columbia, Canada).

Canadian records.

British Columbia: Gulf Islands National Park Reserve, 17-Jun-2014 to 22-Jun-2014 (2 exx, CBG).

Diagnostic information.

Body length: 8.0-9.0 mm. Habitus as in Fig. 15A . Female sternite VIII elongate and truncate apically, as in Fig. 15D . Aedeagus distinctive in lateral view, as in Fig. 15B, C .

Bionomic notes.

In Central Europe, this is a common species in unforested, humid microhabitats such as wetlands, shorelines, agricultural fields, gardens, and heath ( Assing 2012). The Canadian specimens were collected in a wetland adjacent to a lake, one with pitfall traps and the other by Berlese funnel extraction.

Comments.

The voucher specimens from North America are, unfortunately, females but share identical barcode haplotypes with Palaearctic specimens of L. geminum from Germany and Finland. North American vouchers key to L. geminum in Assing (2012) and female sternite VIII is consistent with the shape described for this species. As the Nearctic fauna of Lathrobium is unrevised, comparisons with North American species are not yet possible.

Figures

Figures 15, 16. 15 Lathrobium geminum Kraatz 15 A habitus, L. Borowiec 15 B aedeagus, lateral view V. Assing 15 C aedeagus, ventral view V. Assing 15 D female sternite VIII, modified from Assing and Schuelke (2012) 16 Lathrobium lineatocolle Scriba 16 A aedeagus, lateral view, V. Assing 16 B female sternite VIII, V. Assing. Scale bars: 2.0 mm (15 A), 0.5 mm (15 B-D), 0.5 mm (16 A, B).