摘要:
sci-hub.se 参考文章(2)
John S. Caldwell, Some North American Relatives of Aphalara Calthae Linnaeus (Homoptera: Chermidae) Annals of the Entomological Society of America. ,vol. 30, pp. 563- 571 ,(1937) , 10.1093/AESA/30.4.563
Edith M. Patch, Downy psyllid of alder, Psylla floccosa, new species Canadian Entomologist. ,vol. 41, pp. 301- 303 ,(1909) , 10.4039/ENT41301-9