Ovaticoccus

Pellizzari, Giuseppina & Kozár, Ferenc, 2011, A new species of Greenisca and two new species of Ovaticoccus from Italy (Hemiptera Coccoidea Eriococcidae), with a key to European genera of Eriococcidae., Zootaxa 3090, pp. 57-68 : 65

Key to adult female Ovaticoccus

(after Miller and McKenzie (1967) and Williams and Martin (2003), with additions and changes).

O. nativus (Parrott, 1900) is not included in the key; according to Miller and McKenzie (1967), it is inadequately characterized because specimens were not available for examination. Moreover, because of some morphological characters (i.e. pores in the spiracular atrium), it should belong to the genus Spiroporococcus Miller.

1. Coxae greatly enlarged, with large number of pores................................ O. amplicoxae Williams & Martin

- Coxae not greatly enlarged; if enlarged, with few pores........................................................ 2

2 Macrotubular ducts absent.............................................................................. 3

- Macrotubular ducts present.............................................................................. 4

3 Cruciform pores arranged in a marginal band of single elements from prothorax to abdominal segment IX................................................................................................... O. parkerorum Miller

- Cruciform pores arranged in sparse transverse bands across all abdominal segments.................... O. exoticus sp. n.

4 With at least 2–10 dome-shaped spinose setae on dorsum...................................................... 5

- Without dome-shaped spinose setae on dorsum (except for perhaps 1 or 2)........................................ 8

5 Dorsal quinquelocular pores present....................................................................... 6

- Dorsal quinquelocular pores absent (except for perhaps 1 or 2 on thorax)........................... O. variabilis Miller

6 Antennae 6 segmented; ventral cruciform pores restricted to lateral margins; microcruciform pores numerous in region of hind coxae.................................................................................. O. salviae Miller

- Antennae 7 segmented; ventral cruciform pores present across most abdominal segments; microcruciform pores absent..... 7

7 Ventral cruciform pores numerous across most abdominal segments and present in middle of thoracic segments; dome-shaped spinose setae numerous over dorsum..................................................... O. agavium (Douglas)

- With few ventral cruciform pores across most abdominal segments, these absent in middle of thoracic segments; dorsal dome- shaped spinose setae very few.......................................................... O. agavacearum sp. n.

8 Microtubular ducts absent........................................................... O. californicus McKenzie

- Microtubular ducts present.............................................................................. 9

9 Cruciform pores present on dorsum, clustered on 9th -abdominal segment; on grass.................... O. adoxus (Ferris)

- Cruciform pores absent from dorsum; on Ephedraceae and Compositae.......................................... 10

10 Quinquelocular pores present on dorsum; antennae 7 segmented; anal ring thinly sclerotized and incomplete.................................................................................................. O. mackenziei Miller

- Quinquelocular pores absent on dorsum; antennae 6 segmented; anal ring circular, complete......... O. senarius McKenzie