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 : 10

Key to the known first-instar nymphs of Cryptostigma Ferris

1. Antennae 5 segmented .................................................................................................................................................. 2

- Antennae 6 segmented .................................................................................................................................................. 7

2. Dorsal setae in 2 submedian longitudinal rows ............................................................................................................ 3

- Dorsal setae in 4 longitudinal rows ................................................................................. tuberculosum Kondo , sp. nov.

3. Mid-ventral setae present on all abdominal and thoracic segments; marginal setae in a double row of, those on dorsal surface sharply spinose, those on ventral surface flagellate ................................................... guadua Kondo & Gullan

- Mid-ventral setae present on last 3 abdominal segments only; marginal setae in a single row, all sharply spinose.... 4

4. With 2 pairs of ventral submarginal setae on head region between eyes; trochanter without a very long setae ........... ...................................................................................................................................................... C. silveirai (Hempel)

- With 1 pair of ventral submarginal setae on head region between eyes; trochanter with a very long setae................. 5

5. Femur of each leg with 6 to 8 setae (rarely 4 or 5) ................................................................. longinoi Kondo , sp. nov.

- Femur of each leg with 3 setae ..................................................................................................................................... 6

6. Ventral submarginal setae on abdomen of 2 types: outer submarginal setae sharply spinose, inner submarginal setae slender; most marginal setae strongly bent ...................................................................... rhizophilum Kondo , sp. nov.

- Ventral submarginal setae on abdomen all slender; marginal setae straight, not strongly bent...................................... .............................................................................................................................................. reticulolaminae Morrison

7. Dorsal setae absent ........................................................................................................................ biorbiculus Morrison

- Dorsal setae present ...................................................................................................................................................... 8

8. Antennal segment III 2 or more times longer than antennal segment IV; femur with 4 to 6 setae .............................. 9

- Antennal segment III only slightly longer than antennal segment IV; femur with 9 or more setae ............................... ............................................................................................................................................ chacoensis Kondo , sp. nov.

9. With 1 pair of ventral submedian setae between meso- and metathoracic area ......................................................... 10

- Without a pair of ventral submedian setae between meso- and metathoracic area .................................................... 11

10. Femur with 5 setae; with no more than 1 microduct between each pair of submarginal setae on abdomen.................. ............................................................................................................................................ jonmartini Kondo , sp. nov.

- Femur with 4 setae; with 3 to 4 microducts between most pairs of submarginal setae on abdomen ............................. ...................................................................................................................................... melissophilum Kondo , sp. nov.

11. Claw denticle present; femur with 4 setae; anal plates smooth ......................................................... urichi (Cockerell)

- Claw denticle absent; femur with 4 or 6 setae; anal plates reticulated ...................................... inquilinum (Newstead)