Eriococcidae

Hodgson, Chris, Mille, Christian & Cazères, Sylvie, 2014, A new genus and species of felt scale (Hemiptera: Coccoidea: Eriococcidae) from New Caledonia, Zootaxa 3774 (2), pp. 152-164 : 163

Key to Eriococcidae from New Caledonia (modified after Williams, 2007)

1. Anal lobes strongly developed and prominent.................................................................. 3

- Anal lobes absent ..... Rhopalotococcus sp.................................................................. 2

2. Hind legs with tibia + tarsus conspicuously longer than those of more anterior legs. Antennae seven segmented. Microducts absent. Anal ring with two setae only; suranal setae absent.................................. R. metrosideri Williams

- Hind legs with tibia + tarsus about same size as more anterior legs. Antennae six segmented. Microducts present. Anal ring with four setae, suranal setae present...................................................... R. dugdalei Williams

3. Dorsum with large macrotubular ducts, each with 1–5 associated setae; ventral derm of mesothorax in characteristic ridges between pro- and mesothoracic coxae........................... Choneochiton casuarinae Hodgson, Mille & Cazères

- Dorsum without large macrotubular ducts; ventral derm of mesothorax without characteristic ridges between pro- and mesothoracic coxae........................................................................................ 4

4 Marginal enlarged setae each expanded at apex, abruptly pointed. Legs vestigial, minute. Antennae each four segmented.......................................................................... Chazeauana gahniae Matile-Fererro

- Marginal enlarged setae tapering to a blunt or pointed apex. Legs well developed. Antennae each with six or seven segments .... Eriococcus sp...................................................................................... 5

5. Marginal enlarged dorsal setae at least three times as long as dorsomedial setae. Dorsomedial setae short, truncate with parallel sides........................................................................... E. aruacariae Maskell

- Marginal enlarged dorsal setae at most only twice as long as dorsomedial setae. Dorsomedial setae pointed, similar in shape to marginal setae.......................................................................... E. millei Williams.