Euthoracaphis

Chen, Jing, Fang, Yan & Qiao, Gexia, 2009, Euthoracaphis Takahashi (Hemiptera: Aphididae: Hormaphidinae), a generic account, description of a new species from China, and a key to species, Zootaxa 2284, pp. 30-40 : 31-32

Key to Euthoracaphis species (Apterous viviparous females)

1. Dorsum of prosoma with long thick spinal setae.......................................................................................................... 2

- Dorsum of prosoma with only numerous fine setae, without long thick spinal setae .................................................. 3

2. Dorsum of prosoma with long and short fine setae mixed with long thick setae; sutures on anterior prosoma distinct and continuous; abdominal tergite VIII with 4 setae .............................................................................. E. heterotricha

- Dorsum of prosoma with only 4 pairs of long thick spinal setae and 12 pairs of long thick submarginal setae, without fine setae; sutures on anterior prosoma indistinct and discontinuous; abdominal tergite VIII with 2 setae................... .................................................................................................................................................. E. oligostricha sp. nov.

3. Dorsal setae on prosoma nearly as long as antenna; pustules distinct and protuberant; on Senecio sp. (Compositae).. ................................................................................................................................................................. E. longisetosa

- Dorsal setae on prosoma hardly 0.50 times the length of antenna; pustules flat; on Lauraceae .................................... ................................................................................................................................................. E . umbellulariae (Essig)