Rhingia is a genus of hoverflies. They all have a very distinctive long snout. The larvae are associated with animal dung. Adults feed on nectar and pollen.
Species R. austriaca Meigen, 1830 R. borealis Ringdahl 1928 R. caerulescens Loew, 1858 R. campestris Meigen, 1822 R. cnephaeoptera Speiser, 1915 R. coerulea Bezzi, 1912 R. congensis Curran, 1939 R. cuthbertsoni Curran, 1939 R. cyanoprora Speiser, 1910 R. formosana Shiraki, 1930 R. fuscipes Bezzi, 1915 R. laevigata Loew, 1858 R. lutea Bezzi, 1915 R. mecyana Speiser, 1910 R. nasica Say, 1823 R. nigra Macquart, 1845 R. orthoneurina Speiser, 1910 R. pellucens Bezzi, 1915 R. pulcherrima Bezzi, 1908 R. pycnosoma Bezzi, 1915 R. rostrata (Linnaeus, 1758) R. saskana Szilády, 1943 R. semicaerulea Austen, 1893 R. trivittata Curran, 1929
References
Bugguide.net. Genus Rhingia