Cis boleti (Scopoli, 1763)

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

Cis boleti (Scopoli, 1763) Figure 38

Distribution.

Native to the Palaearctic region. Recorded across Eurasia from western Europe to the Russian Far East and Japan ( Jelínek 2008). Adventive in the Nearctic region (Ontario, Canada).

Canadian records

(barcoded specimens). Ontario: Guelph, 21-Aug-2017 (2 exx, CBG); Guelph, 21-Oct-2017 (2 exx, CBG);

Additional Canadian records.

Ontario: Horning’s Mills, 08-Nov-2015 (1 ex, DEBU); Milton, 28-May-2002 (1 ex, DEBU).

Diagnostic information

(based on Lohse 1967). Body length 2.8-4.0 mm. Habitus as in Fig. 38A . Dark brown to black (usually darker than in Fig. 38A ). Pronotum more than 1.3 times wider than long, with concavities on disc ( Fig. 38B ). Lateral margins of pronotum widely deplanate and visible throughout in dorsal view. Elytra with dual punctation: larger punctures arranged in irregular rows, with the intervals finely and densely punctate. Elytral vestiture consists of short, stout bristles.

Bionomic notes.

This species feeds on polypore fungi, mainly Trametes species growing on deciduous trees ( Koch 1989b, Reibnitz 1999). The barcoded Canadian specimens were collected from polypore fruiting bodies in a mixed forest.

Comments.

Cis submicans Abeille de Perrin, 1874 (= C. pistoria Casey, 1898) is the only other representative of the mainly Palaearctic C. boleti species group known from North America ( Lopes-Andrade et al. 2016). Cis boleti is a robust species, broader and on average larger than C. submicans , with the pronotum at least 1.3 times wider than long. The pronotal disc of C. boleti has indentations on both sides of the midline. These indentations are very shallow in C. submicans . The pronotum is also more densely punctate in C. boleti than in C. submicans .

Figures

Figures 38, 39. 38 Cis boleti (Scopoli) 38 A habitus, L. Borowiec 38 B pronotum 39 A Cis glabratus Mellie, female habitus, L. Borowiec 39 B Cis glabratus, male head and pronotum 39 C Cis glabratus, aedeagus 39 D Cis levettei (Casey), aedeagus. Scale bars: 0.5 mm (38 A, B; 39 A, B), 0.2 mm (39 C, D).