TY - JOUR T1 - Notes on syrphids of the tribe Pipizini and the geographical distribution in China (Diptera: Syrphidae) JF - Acta Zootaxonomica Sinica Y1 - 1998 A1 - Cheng, Xin-Yue A1 - Huang, Chun-Mei A1 - Duan, Feng A1 - Li, Ya-Zhe SP - 414 EP - 427 VL - 23 ER -