The wood mouse Apodemus sylvaticus (Linnaeus, 1758) and the yel low-necked mouse A. flavicollis (Melchior, 1834) are two com mon spe cies of the sub ge nus Sylvaemus, which are wide spread in many Eu ro pean coun tries. A. flavicollis is a typ i cal for est-dwell ing ro dent pre ferring hab i tats with well de vel oped can opy cover (Marsh and Har ris 2000) while A. sylvaticus oc cu pies a broader spec trum of hab i tats, from early successional stages to park-like for est, avoid ing only con tin u ous for est stands (Hamar et al. 1966, Steiner 1968.Re cently, the sys tem at ics and phylogenetics of the ge nus Apodemus have been widely discussed (eg Filippucci et alques tions, es pe cially the phylo gen etic re la tion -[15] Acta Theriologica 51 (1): 15-27, 2006. PL ISSN 0001-7051 Morphometric study of two spe cies of wood mice Apodemus sylvaticus and A. flavicollis (Rodentia: Muridae): tra di tional and geo met ric morphometric ap proach Lenka BARÈIOVÁ and Miloš MACHOLÁN Barèiová L. and Macholán M. 2006. Mor phom etr ic stu dy of two spe cies of wood mice Apodem us sy lvat icus and A. flavi coll is (Ro dent ia: Mu rid ae): tra dit ional and geo met ric mor phom etr ic appro ach. Acta The riol ogi ca 51: 15-27. De part ment of Zo ol ogy, Fac ulty of Bi o log i cal Sci ences, Uni ver sity of South Bo he mia, Branišovská 31, 370 05 Èeské Budìjovice, Czech Re pub lic,