Ripersiella, Tinsley, 1899 in Cockerell, 1899

Szita, Éva, Benedicty, Zsuzsanna Konczné, Kondo, Takumasa, Ramos-Portilla, Andrea Amalia & Kaydan, Mehmet Bora, 2020, Studies on the genus Ripersiella Tinsley (Hemiptera: Coccomorpha: Rhizoecidae) in the Neotropical region, with description of a new species, Zootaxa 4851 (3), pp. 573-582 : 579

Key to species of Ripersiella occurring in the Neotropical region, based on adult females

1 (0) Bitubular ducts present................................................................................. 2

- Bitubular ducts absent................................................................................ 18

2 (1) Circulus present...................................................................................... 3

- Circulus absent...................................................................................... 15

3 (2) With 1 circulus....................................................................................... 4

- With more than 1 circulus............................................................................. 13

4 (3) Multilocular pores present.............................................................................. 5

- Multilocular pores absent.............................................................................. 11

5 (4) Multilocular pores present on both surfaces................................................................. 6

- Multilocular pores absent from dorsum................................................................... 10

6 (5) Claw digitules knobbed, longer than claw.................................................................. 7

- Claw digitules setose, shorter than claw....................................................... menkei McKenzie

7 (6) Bitubular ducts thin, more than 2x as long as wide........................................................... 8

- Bitubular ducts thick, less than 2x as long as wide............................................ gracilis (McKenzie)

8 (7) Circulus about as wide as anal ring....................................................... mexicana Hambleton

- Circulus considerably smaller than anal ring................................................................ 9

9 (8) Bitubular ducts each about 13 µm long; ventral multilocular pores numbering 17–28................... solani Hambleton

- Bitubular ducts each about 8–9 µm long; ventral multilocular pores numbering 40–45............... disjuncta (McKenzie)

10 (9) Ostioles well developed, not sclerotized............................................. aloes (Williams & Pellizzari)

- Ostioles poorly developed, hardly visible............................................... totonicapana Hambleton

11 (4) Eyes present........................................................................................ 12

- Eyes absent............................................................................ bolacis (Williams)

12 (11) Each tergite with 6–13 bitubular ducts; ostioles sclerotized.................................. sasae (Takagi & Kawai)

- Each tergite with 2–5 bitubular ducts; ostioles not sclerotized...................... loksae Kozár & Konczné Benedicty

13 (3) Antenna with 6 segments........................................................... bituberculata (McKenzie)

- Antenna with 5 segments.............................................................................. 14

14 (13) Circuli numbering 2–6; dorsal body setae short, all less than 30 µm long........................ campestris Hambleton

- With only 2 circuli; dorsal body setae up to 100 µm long....................................... kondonis (Kuwana)

15 (2) Antenna with 6 segments.............................................................................. 16

- Antenna with 5 segments.............................................................................. 17

16 (15) Dorsal multilocular pores present on all abdominal segments................... hambletoni Kozár & Konczné Benedicty

- Dorsal multilocular pores absent on abdominal segments..................... caledoniensis Konczné Benedicty & Kozár

17 (15) Dorsal bitubular ducts of 2 conspicuous sizes; multilocular pores present...................... hibisci (Kawai & Takagi)

- Dorsal bitubular ducts of 1 size; multilocular pores absent............................. incarum Kaydan & Szita sp. n.

18 (1) Tubular ducts present, each with opening oval and sclerotised........................... kelloggi Ehrhorn & Cockerell

- Tubular ducts absent.................................................................................. 18

19 (18) Ventral multilocular pores present....................................................... andensis (Hambleton)

- Ventral multilocular pores absent..................................................... colombiensis (Hambleton)