Margarodidae, Cockerell, 1899

Zheng, Xinyi & Wu, San’An, 2024, A review of the Margarodidae sensu stricto (Hemiptera: Coccomorpha) in China, with descriptions of three new species, Zootaxa 5506 (4), pp. 451-500 : 497

Key to genera and species of adult female Margarodidae from China

1(0) Abdominal spiracles numbering 8 pairs (genus Neomargarodes )................................................ 2

- Abdominal spiracles numbering fewer than 8 pairs.......................................................... 5

2(1) Antenna with segments II and III fused together................................................ N. niger (Green)

- Antenna with segments II and III separate................................................................. 3

3(2) Foreleg claw with basal prominent heel angular.............................. N. chenopodium Zheng & Wu , sp. nov.

- Foreleg claw with basal prominent heel swollen and rounded ................................................... 4

4(3) Multilocular disc-pores each with a bright central loculus; disc-pores on abdominal sternites I–IV few, forming transverse segmental bands only 1 or 2 pores wide. Feeding mainly on Fabaceae ............................. .. N. gossypii Yang

- Multilocular disc-pores each without a bright central loculus; disc-pores on abdominal sternites I–IV numerous, forming transverse segmental bands 3–6 pores wide. Feeding on Cucurbitaceae and Amaranthaceae ...... N. cucurbitae Tang & Hao

5(1) Abdominal spiracles numbering 6 or 7 pairs (genus Margarodes ). Body with many spines on thorax and abdomen. Foreleg claw sometimes bifurcate.................................................................. M. sinensis (Silvestri)

- Abdominal spiracles numbering 2 pairs or absent. Body without spines. Foreleg claw acute, never bifurcate (genus Porphyrophora )...................................................................................... 6

6(5) Long hair-like setae few and relatively short (each less than 100 μm long); each abdominal tergite with transverse segmental band of setae only 1 or 2 setae wide..................................... P. neimonggolensis Zheng & Wu , sp. nov.

- Long hair-like setae numerous and long (each more than 200 μm long); each abdominal tergite with transverse segmental band of setae 2–9 setae wide................................................................................ 7

7(6) Antenna with 10 segments. Multilocular disc-pores each without a bright central loculus... P. violaceae Matesova & Jashenko

- Antenna with 9 segments or fewer. Multilocular disc-pores each with a bright central loculus......................... 8

8(7) Abdominal tergites each with transverse segmental band of setae about 6–9 setae wide. Thoracic spiracle with 7–22 spiracular disc-pores.................................................................... P. ningxiana Yang , stat. rest.

- Abdominal tergites each with transverse segmental band of setae about 2–6 setae wide. Thoracic spiracle with 4–6 spiracular disc-pores........................................................................................... 9

9(8) Abdominal sternites each with transverse band of setae only 2 or 3 setae wide.Antenna with 7–9 (mostly 7) segments. Sclerotized plate around eyespot with a reticulated texture............................................ P. polonica (Linnaeus)

- Abdominal sternites each with transverse band of setae about 4–6 setae wide. Antenna with 9 segments. Sclerotized plate around eyespot smooth...................................................... P. ejinensis Zheng & Wu , sp. nov.