Morphology of the preadult stages of Coronaproctus castanopsis Li, Xu & Wu (Hemiptera: Coccomorpha: Monophlebidae) Author Zheng, Xinyi 0000-0002-7396-7488 The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China zxy 780346931 @ 126. com; https: // orcid. org / 0000 - 0002 - 7396 - 7488 Author Li, Jiani 0000-0001-5626-7511 The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China zxy 780346931 @ 126. com; https: // orcid. org / 0000 - 0002 - 7396 - 7488 & lijiani @ bjfu. edu. cn; https: // orcid. org / 0000 - 0001 - 5626 - 7511 lijiani@bjfu.edu.cn Author Wu, San’An The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China zxy 780346931 @ 126. com; https: // orcid. org / 0000 - 0002 - 7396 - 7488 text Zootaxa 2023 2023-10-05 5352 4 537 552 http://dx.doi.org/10.11646/zootaxa.5352.4.5 journal article 10.11646/zootaxa.5352.4.5 1175-5326 8426568 994434D2-5FCE-41C0-BCD6-AE9594A03F7F 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