Agromyzids are small flies with fairly homogeneous external morphology making classification and identification based on external characters difficult. During the first half of the 20th Century the importance of agromyzid male genitalia in determining species idientities and close relationships became recognised. Much of the agromyzid taxonomic research during the latter half of that century was focussed on describing species based on male genitalia and reassigning species to genera in light of genitalic information. Much of this work was carried out by the British expert Kenneth Spencer with assisstance from his wife, Ann.
Currently, the Agromyzidae contains two subfamilies and approximately 29 genera. The subfamilies are supported by two morphological characters: the shape of the subcostal vein in the wing of adult specimens, and the shape of the larval mouthhooks (cephalopharyngeal skeleton) in larval specimens. This basic division of the Agromyzidae into two subfamilies has been largely supported by recent analyses both of morphological characters (Dempewolf 2001, 2005) and of DNA sequence data (Scheffer et al. 2007). There are no tribes within the Agromyzidae or other subdivisions higher than genera.
Agromyzinae Phytomyzinae
Agromyza Fallen Amauromyza Hendel
Cecidiomyiaceltis Patton Aulagromyza Enderlein
Hexomyza Enderlein Calycomyza Hendel
Japanagromyza Sasakawa Cerodontha Rondani
Kleinschmidtimyia Spencer Chromatomyia Hardy
Melanagromyza Hendel Galiomyza Spencer
Ophiomyia Braschnikov Gymnophytomyza Hendel
Penetagromyza Spencer Haplopeodes Steyskal
Tropicomyia Spencer Liriomyza Mik
Metopomyza Enderlein
Napomyza Westwood
Nemorimyza Frey
Phytobia Lioy
Phytoliriomyza Hendel
Phytomyza Fallen
Pseudoliriomyza Spencer
Pseudonapomyza Hendel
Ptochomyza Hering
Selachops Wahlberg
Xeniomyza Hering