Second Instar
Body and head (x12.5)
| Color Pictures |
| 2nd and 3rd Instar Comparison |
| 2nd Instar A |
| 2nd Instar B |
| 2 Instars with different sizes. |
Body length: 6 mm to 9 mm
Body width: 1 to 2 mm
Front tentacles: 0.3 mm
Back tentacles: Small knobs
Head capsule: 0.8 mm diameter
Appearance: Second instar larvae have a clear pattern of black (or dark brown), yellow and white bands, and the body no longer looks transparent and shiny. An excellent characteristic to use in distinguishing first and second instar larvae is a yellow triangle on the head and two sets of yellow bands around this central triangle. The triangular spots behing the head do not have the long setae present in the spots on the first instar larvae. The setae on the body are more abundant, and look shorter and more stubble-like than those on first instar larvae.
Egg | First instar | Second instar | Third instar | Fourth instar | Fifth instar