Bombyliidae
Usia accola Becker, 1906
Usia aenea (Rossi, 1794)
Usia aeneoides Paramonov, 1950
Usia albifrons (Gmelin, 1790)
Usia angustifrons Becker, 1906
Usia anus Becker, 1906
Usia arida Baez, 1982
Usia atra Statz, 1940
Usia atrata (Fabricius, 1798)
Usia aurata (Fabricius, 1794)
Usia bicolor Macquart, 1855
Usia calva Loew, 1869
Usia carmelitensis Becker, 1906
Usia claripennis Macquart, 1840
Usia crinipes Becker, 1906
Usia deserticola Efflatoun, 1945
Usia efflatouni Venturi, 1948
Usia elbae Efflatoun, 1945
Usia engeli Paramonov, 1950
Usia erythraea Greathead, 1967
Usia flavipes Efflatoun, 1945
Usia florea (Fabricius, 1794)
Usia forcipata Brulle, 1833
Usia glauca Evenhuis, 1978
Usia grata Loew, 1856
Usia grisea Efflatoun, 1945
Usia hyalipennis (Seguy, 1941)
Usia ignorata Becker, 1906
Usia incisa Wiedemann, 1830
Usia incognita Paramonov, 1950
Usia inornata Engel, 1932
Usia lata Loew, 1846
Usia loewi Becker, 1906
Usia lutescens Bezzi, 1925
Usia major Macquart, 1840
Usia manca Loew, 1846
Usia marginata Brunetti, 1909
Usia martini Francois, 1969
Usia minor Efflatoun, 1945
Usia minuscula Efflatoun, 1945
Usia notata Loew, 1873
Usia novakii Strobl, 1902
Usia ornata Engel, 1932
Usia pallescens Becker, 1906
Usia parvula Efflatoun, 1945
Usia pusilla Meigen, 1820
Usia sedophila Brunetti, 1909
Usia semiflava (Hesse, 1975)
Usia sicula Egger, 1859
Usia similis Paramonov, 1950
Usia striata Baez, 1982
Usia syriaca Paramonov, 1950
Usia taeniolata Costa, 1883
Usia tewfiki Efflatoun, 1945
Usia tomentosa Engel, 1932
Usia transcaspica Paranonov, 1950
Usia unicolor Loew, 1873
Usia vagans Becker, 1906
Usia versicolor (Fabricius, 1787)
Usia vestita Macquart, 1846
Usia xizangensis Yang & Yang, 1994