Temnoscheila chlorodia (Mannerheim, 1843)

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 : 571-573

TemNOScheILA chLORODIA (Mannerheim, 1843)

This species is unquestionably the dominant Temnoscheila in the western United States and Canada; T. chlorodia is easily collected from freshly cut or downed pines, especially at night when adults emerge from their diurnal resting places (personal observation). Barron (1971) listed only two Montana locations, both within Sanders County; in contrast, the MTEC has 134 specimens representing 48 unique locales in 26 counties, 133 of which were collected after 1987. The absence of records from the central to the southwestern portion of the state is undoubtedly a collecting or sampling artifact ( Fig. 2C ). Barron (1971) did not record this species from either Wyoming or North Dakota, and reported only one record from western South Dakota, even though it appears to be well established in southeastern Montana. Of the specimens examined, 117 were collected by either funnel or vane traps with collecting labels indicating that many traps were baited with either EtOH and alpha-pinene or EtOH only.

County Records ( Fig. 2C ): Beaverhead (1), Big Horn (1), Carter (10), Cascade (4), Custer (3), Dawson (1), Flathead (2), Gallatin (1), Garfield (4), Golden Valley (2), Granite (2), Lake (1), Lewis and Clark (4), Lincoln (6), Mineral (31), Missoula (9), Powder River (23), Powell (1), Prairie (1), Ravalli (9), Rosebud (1), Sanders (8), Silver Bow (1), Stillwater (3), Sweet Grass (1), Treasure (2), Yellowstone (2).

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.