TY - Acta Entomologica Sinica A1 - SONG Hai-Tian, LI Bao-Ping, MENG Ling T1 - Flower-visiting insect diversity of the alien plant Erigeron annuus (Asteraceae) in Nanjing, southeastern China and an analysis of factors influencing their foraging preference Y1 - 2013-03-20 JF - Acta Entomologica Sinica JO - Acta Entomologica Sinica SP - 293 EP - 298 VL - 56 IS - 3 UR - http://www.insect.org.cn N1 - ER -