Fig. 3From: Oviposition traits generate extrinsic postzygotic isolation between two pine sawfly species N. pinetum females preferred P. strobus more strongly than N. lecontei females. a N. pinetum and N. lecontei did not differ in the proportion of females that laid eggs when placed in a host choice arena (P > 0.05). b Of the females that oviposited, the proportion that chose P. strobus was higher for N. pinetum than N. lecontei (P < 0.05)Back to article page