During June 2009-June 2010, we collected 561 actively mating female familiar bluets Enallagma civile. Although only ca. 25% of these subsequently laid eggs in the laboratory, size of clutch averaged 250 eggs (range, 1-1,047). Overall, there was a high average rate of hatching success (75.8%). Size of females, in terms of width of head capsule, a non-labile trait in adults, was not significantly associated with metrics of fitness. Hatching success was associated positively with length of eggs (indicating that size of eggs may be an indicator of quality of eggs) and negatively related to duration of hatching.