Pelionella Kaydan

Kaydan, Mehmet Bora, 2015, A systematic study of Peliococcus Borchsenius (Hemiptera: Coccoidea: Pseudococcidae), with descriptions of a new Palaearctic genus and four new species from Turkey, Zootaxa 3920 (2), pp. 201-248 : 227-228

Key to species of Pelionella Kaydan gen. nov. in the Palaearctic region, based on the morphology of the adult females

1. Clusters on dorsum each with only 1 size of oral collar tubular duct; multilocular disc pores around cluster without larger oral collar tubular ducts.................................................................................... 2

- Clusters on dorsum each with 2 sizes of oral collar tubular ducts, with smaller ducts in centre of each cluster and larger ducts and multilocular disc pores around cluster (very rarely multilocular disc pores few on dorsum but ducts still in clusters, i.e., P. glandulifer . (Borchsenius) and P. tritubulata (Kiritchenko)) .................................................... 3

2. With 3–6 (generally fewer than 5) multilocular disc pores in each cluster on thorax and head; each anal lobe cerarius with 4 enlarged cerarian setae......................................................... P. balteata (Green) comb. nov.

- With 4–8 (generally more than 5) multilocular disc pores in each cluster on thorax and head; each anal lobe cerarius with only 2 enlarged setae and 2 smaller auxiliary setae..................................... P. cycliger (Leonardi) comb. nov.

3. Circulus present....................................................................................... 4

- Circulus absent....................................................................................... 9

4. Quinquelocular pores numerous on venter; marginal cerarii numbering 13–18 pairs................................. 5

- Quinquelocular pores absent or, if a few present, present mainly around mouthparts; marginal cerarii numbering fewer than 8 pairs............................................................................................... 8

5. Each dorsal cluster with 0–4 multilocular disc pores and 2 or 3 large oral collar tubular ducts......................... 6

- Each dorsal cluster with 3–16 multilocular disc pores, and 3–13 large oral collar tubular ducts........................ 7

6. Clusters abundant throughout dorsum, each cluster with 1–3 multilocular disc pores and 1–3 large oral collar tubular ducts and a central small oral collar tubular duct.......................................... P. stellarocheae (Goux) comb. nov.

- Clusters on dorsum few (3–5 in total); each cluster normally without multilocular disc pores but with 1–3 large oral collar tubular ducts around a central smaller duct.................................... P. tritubulata (Kiritchenko) comb. nov.

7. Each cluster with 5–16 (usually 8–10) multilocular disc pores, 5–13 large oral collar tubular ducts, and 7–9 minute discoidal pores; quinquelocular pores extremely sparse on venter................................... P. multipora Kaydan sp.n.

- Each cluster with 3–6 (usually 4) multilocular disc pores, 3–5 large oral collar tubular ducts, and 2–4 minute discoidal pores; quinquelocular pores common on venter..................................... P. manifecta (Borchsenius) comb. nov.

8. Multilocular disc pores on dorsum generally absent; if present, very few, restricted to posterior abdominal segments; each cluster with 0 or 2 (usually 0) multilocular disc pores, 1–4 large oral collar tubular ducts, and 2–4 minute discoidal pores............................................................................ P. glandulifer (Borchsenius) comb. nov.

- Multilocular disc pores present in clusters on dorsum, each cluster with 2–5 (usually 3) multilocular disc pores, 2–5 large oral collar tubular ducts, and 2–4 minute discoidal pores......................................... P. kansui Kaydan sp.n.

9. Marginal cerarii numbering 14–17 pairs; ventral multilocular disc pores restricted to abdominal segments VI–VIII....... 10

- Marginal cerarii numbering fewer than 4 pairs; ventral multilocular disc pores present on abdominal segments IV–VIII................................................................................... P. sablia (Goux) comb. nov.

10. Clusters on dorsum common and in distinct rows on each segment; femur without translucent pores................................................................................................ P. grassiana (Goux) comb. nov.

- Clusters on dorsum sparsely distributed on each segment, not forming distinct rows; femur with translucent pores................................................................................... P. proeminens (Goux) comb. nov.