Euthoracaphis umbellulariae (Essig)

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 : 39

Euthoracaphis umbellulariae (Essig)

( Figs. 35–37 )

Thoracaphis umbellulariae Essig, 1932: 4 ; Takahashi, 1935: 140.

Thoracaphis cinnamoniae Shinji, 1941: 1133 .

Euthoracaphis umbellulariae (Essig) : Takahashi, 1959: 8; Hille Ris Lambers, 1966: 584; Eastop & Hille Ris Lambers, 1976: 197; Blackman & Eastop, 1994: 691; Remaudière & Remaudière, 1997: 186.

Specimens examined. JAPAN: 7 apterous viviparous females, Wakayama, 26 Jan. 1958, No. E572, on Cinnamomum japonicum , coll. M. Sorin (ZMCAS).

Distribution. Japan, North America.

Host plants. Cinnamomum camphora , C. camphoratum , C. japonicum , C. pedunculatum , Sassafras variifolium , Umbellularia californica .

Biology. Apterae are black, covered with white wax ( Essig, 1932), on the undersurface of leaves along ribs ( Takahashi, 1959), often making trees sooty black ( Hille Ris Lambers, 1966). Populations in California are anholocyclic ( Blackman & Eastop, 1994).

Figures

FIGURES 35 – 37. Euthoracaphis umbellulariae. Apterous viviparous female: 35. dorsal view of body, 36. distinct and continuous suture on anterior prosoma, 37. distinct but discontinuous suture on anterior prosoma. Scale bars = 0.1 mm.