Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First occurrence of Roesel's Bush Cricket, Metrioptera roeselii, (Hagenbach), (Orthoptera: Tettigoniidae), in New Brunswick.

Abstract

Although predicted to occur in the Maritimes, Roesel's bush cricket (Metrioptera roeselii) has not been reported in the region until now. This paper documents the first occurrence of this alien in a tall-grass old field in New Brunswick (Canada), as it apparently continues to expand its North American range. The old-field site occupies an area of ∼18.2 ha and is dominated by common timothy (Phleum pratense), redtop (Agrostis gigantea), tickle grass (Agrostis scabra), red fescue (Festuca rubra) (Poacea); fall dandelion (Leontodon autumnalis), black starthistle (Centaurea nigra), common tansy (Tanacetum vulgare) (Asteraceae); and white clover (Trifolium repens) (Fabaceae). The site is bordered by suburban housing, but institutional, commercial-retail and light to heavy industrial development occur within 5 km. Although Vickery (1965) felt M. roeselii was unlikely to become an agricultural pest in North America, its impacts or potential response to climate change on this continent have not been studied.