Abstract
Myrsidea serini (Séguy, 1944) is redescribed and illustrated from 2 syntypes and additional material collected from the type host (Serinus serinus), and from Serinus canaria domesticated form, Carduelis chloris chloris, Carduelis carduelis britannica, Carduelis carduelis parva, and Emberiza citrinella caliginosa. The syntype male is designated as lectotype.