The systematics of "Vanellus" have hitherto resisted clear resolution. Essentially, no major revision can be brought to agree with another, and up to 19 genera were at one time recognized for the 24 lapwing species. While it might be desirable to split up this large and diverse genus a bit, the morphological characters are a confusing mix of apomorphic and plesiomorphic traits in any one species, with few relationships readily apparent. Molecular data has been found to provide even less sufficient resolution, though the lapwings have not yet been as thoroughly studied under this aspect as other Charadriiformes.