Sawfly abundances (mean per day per sampling period) varied over their flight periods in 1998 and 1999 in Dyke Marsh Wildlife Preserve, Virginia. Diamonds represent sawfly numbers in the ecotone; squares, forest; triangles, marsh; and circles, all three habitats combined. In 1998, sampling interval A1 was from 12–19 April; A2, 19–28 April; M1, 28 April – 10 May; M2, 10–17 May; M3, 17–28 May; J1, 28 May – 6 June; J1, 6–14 June; J3, 14–24 June; J1, 24 June – 7 July; J2, 7–19 July; 1J3, 19–30 July; A1, 30 July – 9 August; A2, 9–12 August; A3, 12–28 August; S1, 28 August – 11 September; S2, 11–26 September; O1, and 26 September – 11 October. No sawflies were in the samples from 11–26 October and 26 October – 6 November; 6–22 November, 22 November – 6 December, and 6–20 December, which are not shown on this graph. In 1999, sampling interval F1 was from 24 January – 15 February; M1; 15 February – 6 March; M2, 6–20 March; A1, 20 March – 3 April; A2, 3–11 April; A3, 11–25 April; M1, 25 April – 8 May; M2, 8–23 May; J1, 23 May – 6 June; J2, 6–20 June; J1, 20 June – 2 July; J2, 2–18 July; J3, 18–23 July; A1, 23 July – 8 August; A2, 8–15 August; A3, 15–29 August; S1, 29 August – 12 September; S2, 12–26 September; O1, 26 September – 11 October; O2, 11–24 October; 16, N1, 24 October – 8 November; and N2, 8–21 November. There were no sawflies in samples J1, 20 December – 3 January; J2; 3–24 January; D1, 21 November – 5 December; and D2, 5–19 December which are not shown on this graph.