Sunday, December 10, 2006 - 8:47 AM

Invasive Tipula crane flies in the Northeast: Geographic distribution and local incidence in turfgrass

Daniel C. Peck,, Cornell University, Department of Entomology, New York State Agricultural Experiment Station, 630 West North Street, Geneva, NY and Daniel Olmstead,, Cornell University, Department of Entomology, NYSAES, 630 W. North Street, Geneva, NY.

Three years after their first detection in western New York, the distribution, incidence and abundance of two invasive crane flies (Tipula oleracea and T. paludosa) is established. Based on known differences in biology and behavior, T. oleracea was predicted to occur over a broader area of the state, be more widespread locally, and build up local population density less quickly than its congener T. paludosa. Surveys were conducted to delimit the current distribution, detecting T. oleracea in nine counties and T. paludosa in three. On select golf courses, a series of greens and tees were scouted to determine local incidence based on surveys of pupal exuviae over the period of adult emergence. Results showed 22-97% of tees/greens to be infested by the first or second year after detection. Finally, various estimates of population densities were made over the course of these studies to assess abundance of the two species. In light of these results, the potential impact of T. oleracea and T. paludosa in golf courses of the Northeast is compared and discussed.

Species 1: Diptera Tipulidae Tipula paludosa (European crane fly)
Species 2: Diptera Tipulidae Tipula oleracea (European crane fly, marsh crane fly)

[ Recorded presentation ] Recorded presentation