Corticotomus caviceps (Fall, 1910)

Kippenhan, Michael G., 2022, The Bark-Gnawing Beetles of Montana, USA (Coleoptera: Trogossitidae, Peltidae, and Lophocateridae), Including New Substantial Distributional Records for Tenebroides collaris (Sturm), The Coleopterists Bulletin 76 (4), pp. 569-576 : 571

CORtIcOtOmuS cAvIcepS (Fall, 1910)

This species has broad distribution west of the Great Plains in the United States and Canada ( Barron 1971). This species’ disjunct recorded distribution in Montana ( Fig. 2B ) is most likely an artifact of collecting and sampling. It likely inhabits most, if not all, of the NFM ecoregion. While this species can be collected by beating freshly downed pines (personal observation) or rearing from a variety of trees, primarily conifers ( Barron 1971), all 54 Montana specimens examined were collected by Lindgren funnels.

County Records ( Fig. 2B ): Big Horn (1), Carter (1), Dawson (1), Deer Lodge (1), Garfield (1), Golden Valley (10), Granite (5), Missoula (3), Musselshell (12), Powder River (1), Prairie (1), Ravalli (5), Rosebud (2), Sanders (1), Treasure (4), Valley (4), Yellowstone (1).

Figures

Fig. 2. Distribution of 12 species of bark-gnawing beetles by county in Montana.A) Calitys scabra, B) Corticotomus caviceps, C) Temnoscheila chlorodia, D) Tenebroides collaris, E) Tenebroides corticalis, F) Tenebroides crassicornis, G) Tenebroides occidentalis, H) Tenebroides sinuatus, I) Peltis fraterna, J) Peltis pippingskoeldi, K) Peltis septentrionalis, L) Eronyxa angusta.