Formicococcus Takahashi, 1928

Joshi, Sunil, Gupta, Ankita, Shashank, P. R., Pai, Sachin G., Mohan, M., Rachana, R. R., Dubey, Vinod Kumar, Sandeep, Angalakuditi & Deepthy, K. B., 2022, Recent adventive soft scale insects (Hemiptera: Coccomorpha: Coccidae) and mealybugs (Hemiptera: Coccomorpha: Pseudococcidae) in India, Zootaxa 5194 (2), pp. 213-232 : 229

Key to adult females of the Indian species of Formicococcus Takahashi amended from the key provided by Joshi et al. (2020a)

1(0) Dorsal and ventral surfaces of anal lobes sclerotized, in addition to anal lobe bars................... F. lingnani (Ferris)

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

2(1) Ventral oral collar tubular ducts present anterior to abdomen, on thorax or on head and thorax........................ 3

- Ventral oral collar tubular ducts confined to abdomen, absent from head and thorax................................ 8

3(2) Multilocular disc pores present on marginal and submarginal areas of abdominal venter............................. 4

- Multilocular disc pores present only in the median area of abdomen, absent from marginal and submarginal areas of abdominal venter.............................................................................................. 6

4(3) Ventral tubular ducts of 2 sizes..................................................... F. mangiferacola Williams

- Ventral tubular ducts of only 1 size....................................................................... 5

5(4) Most cerarian setae quite long, conical with flagellate tips. Marginal and submarginal groups of multilocular disc pores present only as forward as abdominal segment V. Hind femur without translucent pores................... F. simplicior (Green)

- Most cerarian setae very elongate and flagellate. Marginal and submarginal groups of multilocular disc pores present as forward as abdominal segment III. Hind femur with translucent pores.............................. F. formicarius (Newstead)

6(3) Anal lobe inner margins meeting at base; dorsal setae stout but with flagellate tips................. F. formicarii (Green)

- Anal lobe inner margins widely separated at base; dorsal setae of variable shapes but never with flagellate tips........... 7

7(6) Dorsal setae blunt, stiff, many slightly knobbed, measuring 17–40 µm............................. F. latens Williams

- Dorsal setae stiff, conical, lanceolate and acute, measuring 6–20 µm.......................... F. polysperes Williams

8(2) Ventral setae thick, short and curved, including anal lobe bar setae, cisanal and obanal setae........ F. tripurensis Williams

- Ventral setae all flagellate.............................................................................. 9

9(8) Anal lobe cerarii each with 2 conical and 1 or 2 auxiliary setae................................ F. erythrinae Williams

- Anal lobe cerarii with more than 2 conical setae in addition to auxiliary setae.................................... 10

10(9) 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, a few with flagellate tips. 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............................................................................. F. robustus (Ezzat & McConnell)

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