Tribe Stomoxyini Meigen, 1824

The specialized mouthparts of this group of hematophagous muscids leave no doubt as to their monophyly. Among the 10 currently recognized genera I have examined species belonging to five of them (Table 1).

• Haematobia Le Peletier & Serville in Latreille et al., 1828

The examined species Haematobia exigua Meijere in Schat, 1903, H. irritans (Linnaeus, 1758) and H. minuta (Bezzi, 1892), have vein C extensively setulose ventrally (state A4), but one examined species or subspecies ( Haematobia thirouxi titillans (Bezzi, 1907)) has the ventral costal setulae confined to CS1 (state A2).

• Haematobosca Bezzi, 1907

Among the five examined species, Haematobosca alcis (Snow, 1891) and H. sanguisugens (Austen, 1909), stat. rev., have vein C extensively setulose ventrally (state A4), H. sanguinolenta (Austen, 1909) and H. stimulans (Meigen, 1824) have the ventral costal setulae confined to CS1 (state A2), and Haematobosca atripalpis (Bezzi, 1895) has the ventral setulae confined to the basal half of CS1 (state A1).

• Neivamyia Pinto & Fonseca, 1930

The only examined species, Neivamyia flavicornis (Malloch, 1928), has the ventral costal setulae confined to CS1 (state A2).

• Stomoxys Geoffroy, 1762

In most examined species ( Stomoxys calcitrans (Linnaeus, 1758), S. inornatus Grünberg, 1906, S. niger Macquart, 1851, S. pallidus Roubaud, 1911, S. sitiens Rondani, 1873 and S. taeniatus Bigot, 1888) vein C is extensively setulose ventrally (state A4), but in one species ( Stomoxys indicus Picard, 1908) the ventral costal setulae are confined to CS1 (state A2).

• Stygeromyia Austen, 1907

In the only examined species, Stygeromyia sanguinaria Austen, 1909, vein C is bare ventrally except for single setulae at the extreme base of CS1 (state A0).