Development time (days, mean ± SE) of nymphs in the different instars of <i>H. foeniculi</i> at five constant temperatures (15°C, 20°C, 25°C, 28°C or 30°C), a photophase of 12 h and a relative humidity of 70±10%.

1<p>Within the rows, the means with the same lowercase letter do not differ significantly by the Student-Newman-Keuls test (<i>P = 0.05</i>).</p>2<p>Within the columns, the means with uppercase letters do not differ significantly by the Student-Newman-Keuls test (<i>P</i> = 0.05).</p>3<p>Represents the entire time that an aphid spent in the nymphal stage.