IntroductionCoptophlebia Bezzi is one of the largest subgenera in the genus Empis Linnaeus with 161known species distributed worldwide(Yang et al.2017).It is characterized by M1 reduced andapically not reaching the wing margin(Daugeron 1997,2001).The Empis(Coptophlebia)hyalea-group is the largest species group in the subgenus Coptophlebia and is characterized bythe labella with an unsclerotized zone in the middle,epandrial lamellae linked dorsally by abroad sclerite and epandrium ......(论文页数是：6页) ，越语论文，越语论文范文 |
