Key to instars and adults of Kermesidae species of Israel

1. Wings or wing-buds present; mouthparts absent.............................................................. 2

- Wings and wing-buds absent; mouthparts well-developed...................................................... 4

2. Wings fully-developed; five pairs of simple eyes..................................................... adult male

- Wings present as wing-buds; simple eyes absent............................................................. 3

3. Wing-buds not extending past metacoxa; antennae 7–8 segmented; legs 3 segmented......................... prepupa

- Wing-buds extending past metacoxa; antennae 10–11 segmented; legs fully- developed........................... pupa

4. Antennae 7 segmented; dorsum with abundant tubular ducts......................................... 2nd -instar male

- Antennae with 6 or fewer segments; dorsum with few or no tubular ducts......................................... 5

5. Venter lacking a submarginal band of tubular ducts.............................................. 1st -instar nymph

- Venter with a submarginal band of tubular ducts............................................................. 6

6. Venter with a submarginal band of tubular ducts 1–2 ducts wide....................................2nd -instar female

- Venter with a submarginal band of tubular ducts 4–25 ducts wide................................................ 7

7. Multilocular disc-pores absent ventrally from abdominal segments.................................. 3rd -instar female

- Multilocular disc-pores present ventrally on abdominal segments....................................... adult female