58.007 Pieris rapae (Small White)
ws: 38-57mm; bivoltine late Apr-Jun, Jul-Sep; various Brassicaceae; common throughout GB
ID: Both sexes have a grey forewing apical mark. The male has a mid forewing black spot; the female has two prominent black spots and a grey dash of variable prominence along the middle of the dorsum. The markings of the second generation are darker and more prominent than those of the first generation. P.brassicae (Large White) is larger (ws 58-63mm) but otherwise similar - the male lacks the midwing black spot and in both sexes the apical black mark extends almost as far along the termen as it does along the costa (in P.rapae it extends only a short distance along the termen).
Page published 07/04/2014 (§1-3) | §4 (male genitalia) added 28/07/2014