?Mate choice errors may contribute to slow spread of an invasive Eurasian longhorn beetle in North America

Tetropium fuscum (Coleoptera: Cerambycidae) is a Eurasian longhorn beetle and forest pest that first became invasive to Nova Scotia, Canada around 1990. In the time since its introduction, T. has spread only about 150 km from point of introduction. range, co-exists with congener cinnamopterum . Although they are ecologically similar species, tends infest healthier trees smaller host range than If successfully interbreed, this could lead hybrid individuals more problematic either parent species. On other hand, if can make mating errors in field, but not producing offspring, then waste resources help explain slow North America. We conducted no-choice choice experiments between males females determined both mate-choice heterospecific laboratory setting. Our results suggest may play role