姬花蚤属 1. The present paper deals with two species of genusMordellistena. 本文记述了近年在河北省张家口地区发现一种严重为害向日葵的姬花蚤属1新种──杨氏姬花蚤Mordellistena(s。 2) Mordellistena yangi 杨氏姬花蚤 1. A preliminary study on occurrence ofMordellistena yangiFan and its control in Baiche...