Paracoccus, Spilococcus and other related genera

Tanaka, Hirotaka & Kamitani, Satoshi, 2022, Review ofthegenus CrisicoccusFerris (Hemiptera: Coccomorpha: Pseudococcidae) in Japan with description of a new species, and the identity of a South Korean mealybug misidentified as Crisicoccus matsumotoi (Shiraiwa 1935), Zootaxa 5209 (5), pp. 555-572 : 567-568

Key to separate the genera Paracoccus, Spilococcus and other related genera with oral rim tubular ducts

(adapted and modified from Kaydan & Szita 2017)

1(0) Oral rim tubular ducts present, each with well-developed rim.................................................. 2

- Oral rim tubular ducts absent entirely.................................................... rest of Pseudococcinae

2(1) Cerarii entirely absent............................................. Humococcus Ferris and Bromusicoccus Kaydan

- At least anal lobe cerarii present......................................................................... 3

3(2) Multilocular disc pores absent from venter except occasionally for 1 or 2 around vulva.............. Distichlicoccus Ferris

- Multilocular disc pores present on venter at least around vulva................................................. 4

4(3) Some abdominal cerarii each with 3 or more conical setae................................................................................................... Moystonia Williams and Brasiliputo Williams & Granara de Willink

- All abdominal cerarii each with 2 conical setae.............................................................. 5

5(4) Cerarii numbering no more than 6 pairs, on abdomen only............................................................ Maconellicoccus Ezzat , Atrococcus Goux , Colombiacoccus Williams & Granara de Willink , and Vryburgia De Lotto.

- Cerarii numbering 9–18 pairs, not confined to abdomen....................................................... 6

6(5) Legs usually long and slender, extending well beyond margins of body; claws noticeably long, pointed and slender, usually straight; rims of oral rim tubular ducts, although well developed, fairly flat in profile.................. Leptococcus Reyne

- Legs rarely extending beyond margins of body; claws stout and curved; rims of oral rim tubular ducts elevated above derm when viewed in profile................................................................................. 7

7(6) Venter of each anal lobe with an anal lobe bar, present either forwards from apical seta or from bar seta only........................................................................................ Paracoccus Ezzat & McConnell

- Venter of each anal lobe without anal lobe bar, although differently shaped sclerotized area may be present.............. 8

8(7) Venter of each anal lobe with triangular-quadrate sclerotized area occupying much of lobe; auxiliary setae present at least in anal lobe cerarii and penultimate cerarii (C 17 and C 18)...................................... Pseudococcus Westwood

- Venter of each anal lobe without any sclerotized area; auxiliary setae present in anal lobe cerarii only..... Spilococcus Ferris