Cryptostigma Ferris, 1922

Kondo, Takumasa, 2010, Taxonomic revision of the myrmecophilous, meliponiphilous and rhizophilous soft scale genus Cryptostigma Ferris (Hemiptera: Coccoidea: Coccidae) 2709, Zootaxa 2709, pp. 1-72 : 7-8

Key to separate the male and female instars of Cryptostigma Ferris

1. Insects with wings or wing buds.......................................................................... Adult male, or male pupa or prepupa

- Insects without wings or wing buds.............................................................................................................................. 2

2. Legs and antennae long, well developed, showing no reduction of segments; legs clearly cursorial .......................... 3

- Legs and antennae short, greatly reduced; legs not cursorial .......................................................................................5

3. Each anal plate with a long apical seta, if apical seta broken, large setal socket of apical seta present on apex of each plate.................................................................................................................................................... first-instar nymph

- Each anal plate with neither a long apical seta nor with a large setal socket on apex of each plate ............................ 4

4. Dorsum with tubular ducts....................................................................................................second-instar nymph male

- Dorsum without tubular ducts............................................................................................second-instar nymph female 5. Vulva and multilocular disc-pores absent around vulva .................................................................. third-instar nymph

- Vulva present; multilocular disc-pores present in perivulvar region.......................................................... adult female