Table 4. Impact of Liotryphon caudatus and Mastrus ridibundus in pear orchards 1994-97

Site	Year	Sample size	Liotryphon	Mastrus
Courtland 1	1994	262	30%
Courtland 2	1994	54	1.9%
Courtland	1995	96	0%	18.4%
Philo	1995	43	4.7%	11.6%
Courtland	1996	200	0%	10.3%
Courtland1	1997	200	1.1%	38.1%
Potter Valley	1997	100	0%	12.3%

¹No releases of either L. caudatus or M. ridibundus were made in Courtland in 1997, and so the recoveries of parasitoids are from releases made in previous years.

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