Formicococcus Takahashi, 1928

Joshi, Sunil, Jose, Bindu K., Gullan, Penny, Sajeev, T. V. & Anoop, E. V., 2020, A new species of mealybug (Hemiptera: Coccomorpha: Pseudococcidae) from Tectona grandis L. f. (Lamiaceae) in southern India, Zootaxa 4718 (3), pp. 391-400 : 399

Key to adult females of the Indian species of Formicococcus Takahashi

1. Dorsal and ventral surfaces of anal lobes sclerotized, in addition to anal lobe bars...................... lingnani (Ferris)

- Dorsal and ventral surfaces of anal lobes membranous except for anal lobe bars.................................... 2

2. Ventral oral collar tubular ducts present anterior to abdomen, on head or on head and thorax.......................... 3

- Ventral oral collar tubular ducts confined to abdomen, absent from head and thorax................................. 6

3. Cerarian setae on abdominal segment VIII obviously longer than dorsal setae on same segment; dorsal setae on segment VIII obviously longer than those on segment VI................................................................. 4

- Cerarian setae on abdominal segment VIII mostly shorter than or same length as dorsal setae on same segment; dorsal setae on segment VIII about same length as those on segment VI....................................................... 5

4 Anal lobe inner margins meeting at base; dorsal setae on medial areas of abdominal segments VII and VIII longer than those on segment VI....................................................................... formicarii (Newstead)

- Anal lobe inner margins widely separated at base; dorsal setae on abdominal segment VII, especially in submarginal areas, much longer than those on segment VI......................................................... latens Williams

5. Dorsal setae anterior to abdominal segment VIII short and thick; bases of most setae each at least as wide as a trilocular pore. Ventral oral collar tubular ducts absent from opposite ocular cerarii (C 3) and from margins of meso- and metathorax............................................................................................ polysperes Williams

- Dorsal setae anterior to abdominal segment VIII short and slender; bases of setae each narrower than a trilocular pore. Ventral oral collar tubular ducts present opposite ocular cerarii (C 3) and on margins of meso- and metathorax..................................................................................................... mangiferacola Williams

6. Ventral setae thick, short and curved, including anal lobe bar setae, cisanal and obanal setae........... tripurensis Williams

- Ventral setae all flagellate............................................................................... 7

7. Anal lobe cerarii each with 2 conical and 1 or 2 auxiliary setae.................................. erythrinae Williams

- Anal lobe cerarii with more than 2 conical setae in addition to auxiliary setae...................................... 8

8. Cerarii basically numbering 18 pairs, sometimes as few as 14 pairs discernible but number can vary between different sides of same specimen; all cerarian setae conical. Dorsal setae short and stiff, each 10–20 µm long. Multilocular disc pores present as far forward as abdominal segment V. Translucent pores present on hind coxa and tibia....... robustus (Ezzat & McConnell)

- Cerarii numbering 11–15 pairs; all cerarian setae conical with a flagellate apex. Dorsal setae each thick and stiff, 17–65 µm long, with flagellate apex. Multilocular disc pores present only as forward as abdominal segment IV. Translucent pores present only on hind coxa, absent from or very rare on hind tibia.............................. tectonae Joshi, Bindu & Gullan