Calyptomerus dubius (Marsham, 1802)

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

publication ID

https://dx.doi.org/10.3897/zookeys.894.37862

publication LSID

lsid:zoobank.org:pub:D11503CA-5A57-4067-8179-04E0C8C162C8

persistent identifier

https://treatment.plazi.org/id/5A244D85-B06E-521F-879A-27A5398EEBDC

treatment provided by

ZooKeys by Pensoft

scientific name

Calyptomerus dubius (Marsham, 1802)
status

 

Calyptomerus dubius (Marsham, 1802) Figure 20 View Figures 20, 21

Distribution.

Native to the Palaearctic region, widespread in Central Europe and around the Mediterranean ( Endrödy-Younga 1961, Löbl 2006). Adventive in the Afrotropical region (South Africa), the Australian region (Australia) ( Endrödy-Younga 1974) and in the Nearctic region (British Columbia, Canada).

Canadian records.

British Columbia: Abbotsford, 22-Sep-2014 to 03-Oct-2014 (1 ex, CBG); Vancouver, 22-Sep-2014 to 03-Oct-2014 (1 ex, CBG); Victoria, 03-Sep-2014 to 10-Sep-2014 (1 ex, CBG).

Diagnostic information

(based on Endrödy-Younga 1961). Body length 1.1-1.6 mm. Habitus as in Fig. 20A View Figures 20, 21 . Red-brown, with the edges of pronotum and elytra paler. The antennal groove forms a continuous and even curve with the side of the frons in front of the eyes. Lateral edges of pronotum bluntly angled. Pubescence on the dorsal surface long and sparse. Elytra angled apicolaterally and truncate at the hind margin. Aedeagus as in Fig. 20B View Figures 20, 21 .

Bionomic notes.

This species is known from decaying plant material. It has been collected from dead, fungus-infested logs of deciduous trees, leaf litter, composts, moldy hay, etc. ( Koch 1989b). The Canadian specimens were collected with Malaise traps in residential areas.

Comments.

Calyptomerus oblongulus (Mannerheim, 1853) is the only other representative of this genus known from North America. It is larger than C. dubius (body length 1.8-2.0 mm), with a rounded angle between the antennal groove and the lateral margin of frons, rounded lateral edges of pronotum, evenly curved (not truncate) elytral hind margins, shorter and denser pubescence on the dorsal surface, and different male genitalia ( Endrödy-Younga 1961).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Clambidae

SubFamily

Calyptomerinae

Genus

Calyptomerus