The nematode Cardiofilaria pyrrhurae (males and females) was studied f
rom the new host Pyrrhura picta, imported from Surinam to the Czech Re
public. Compared with the original description, almost a full conformi
ty of metrical features was found. The description of the taxon was co
mpleted and made more precise by new data on morphology of the head en
d and on number and distribution of caudal papillae. Comments on the s
ystematics of this taxon are included.