Coronaproctus castanopsis, , Li, Xu & Wu, 2023

Zheng, Xinyi, Li, Jiani & Wu, San’An, 2023, Morphology of the preadult stages of Coronaproctus castanopsis Li, Xu & Wu (Hemiptera: Coccomorpha: Monophlebidae), Zootaxa 5352 (4), pp. 537-552 : 550-551

Key to separate developmental stages of Coronaproctus castanopsis

1(0) Mouthparts, body spines and cicatrices present............................................................. 2

- Mouthparts, body spines and cicatrices absent.............................................................. 5

2(1) Antenna with 10 segments; vulva and marsupium present............................................ adult female

- Antenna with 5–9 segments; vulva and marsupium absent..................................................... 3

3(2) Antenna with 5 segments; 1 cicatrix present; large bitubular glands present on margin................ first-instar nymph

- Antenna with 6–9 segments; cicatrices numbering 7, 11 or 13; large bitubular glands absent.......................... 4

4(3) Antenna with 6 segments; large quadrilocular pores present; trochanter with 2 campaniform sensilla on each surface.......................................................................................... second-instar nymph

- Antenna with 8 segments; large quadrilocular pores absent; trochanter with 3 campaniform sensilla on each surface....................................................................................... third-instar female nymph

5(1) Wings and wing buds absent; antenna with 9 segments.................................... third-instar male nymph

- Wings or wing buds present; antenna with 10 segments....................................................... 6

6(5) Legs each with a claw; wings fully developed; compound eyes present.................................. adult male

- Legs each without a claw; wings in bud state; compound eyes absent.................................... male pupa