Phenology, diversity and associated nematodes of native Siricidae throughout Arkansas

In 2005, an invasive woodwasp, Sirex noctilio Fabricius (Hymenoptera: Siricidae), was collected in New York. Unlike native Siricidae, at high densities S. noctilio can attack and kill healthy pines. Although this species has not yet been found in Arkansas, it has the potential to become a threat to pines throughout the state. The overall goal of our research is to acquire information on the diversity and phenology of native Siricidae and their nematode parasites across Arkansas. Gaining new knowledge on life history of native siricids and their nematode parasites could assist in detection and possible management of S. noctilio if it should arrive. Panel traps baited with Contech Inc. Sirex lures are set up at sites in three distinct forest environments in, Ozark National Forest, Ouachita National Forest and Southern Arkansas. Trapped siricids are dissected to determine if parasitic nematodes are found in native siricid populations. Determining abundance and distribution of native nematodes is potentially important for future invasive woodwasp management.