Page 24 - Natures Witness Entomology

Fly Development

Times

The following charts show the time in hours individuals of each species spend in each life stage at a standard
temperature, 21 °C. Notice the species development times are somewhat different. It requires 21 hours for
the egg from Species A to reach first Instar, while it takes 25 hours for species B.

Species A

FEEDING MIGRATING
ND
TEMP °C EGG 1 INSTAR 2 INSTAR PUPA
ST
RD
RD
3 INSTAR 3 INSTAR
21 21 31 26 50 118 240

Species B

FEEDING MIGRATING
TEMP °C EGG 1 INSTAR 2 INSTAR PUPA
ST
ND
3 INSTAR 3 INSTAR
RD
RD
21 25 37 31 60 124 286

24 THE MYSTERY OF LYLE AND LOUISE