Donacia
Donacia is a large genus of aquatic leaf beetles in the subfamily Donaciinae. Like other members of that subfamily, the beetles are have densely pubescent underside and long antennae. The genus is recognized by the truncate elytral apex and pubescent area above the procoxa. Adults are active and readily take flight. Adults feed on the upper epidermis of host plants; some may be pollen feeders. Larvae feed on the sap of submerged portions of aquatic plants, such as water lilies, sedges, Sagittaria, Sparganium, pond weed. They are believed to breathe oxygen from plant vessels as well as cutaneously. Adults live on surface parts of the same plants but can go under water for extended periods because of their plastron.
There are 15 proposed subgenera. The three largest subgenera are: Donacia (Donacia) s. str., with 10 Nearctic and 5 Palaearctic species; Donacia (Cyphogaster) with about 6 Australasian species; and Donacia (Donacocia) containing about 21 Nearctic species and about 75 Palaearctic species.
Species
These 113 species belong to the genus Donacia:Donacia aequidorsis Jacobson, 1894Donacia aeraria Baly, 1867Donacia andalusiaca Kraatz, 1869Donacia anetae Bienkowski, 2015Donacia antiqua Kunze, 1818 Donacia aquatica Donacia assimilis Lacordaire, 1845 Donacia aureocincta J.Sahlberg, 1921 Donacia bicolora Zschach, 1788 Donacia bicoloricornis Chen Donacia biimpressa Melsheimer, 1847 Donacia brevicornis Ahrens, 1810 Donacia brevitarsis Thomson, 1884 Donacia caerulea Olivier, 1795 Donacia cazieri Marx, 1957 Donacia cincticornis Newman, 1838 Donacia cinerea Herbst, 1784 Donacia clavareaui Jacobson, 1906Donacia clavipes Fabricius, 1792 Donacia confluenta Say, 1826 Donacia connelli Cockerell, 1927Donacia cordovae Pierce, 1950Donacia crassipes Fabricius, 1775 Donacia cuprea Kirby, 1837 Donacia delesserti Donacia dentata Hoppe, 1795 Donacia disjecta Förster, 1891Donacia dissimilis Schaeffer, 1925 Donacia distincta LeConte, 1851 Donacia draycoti Pierce, 1950Donacia edentata Schaeffer, 1919 Donacia elongatula Scudder, 1898Donacia fastuosa Khnzorian, 1962Donacia fennica Donacia flemora Goecke, 1944Donacia frontalis Jacoby, 1893 Donacia fukiensis Goecke, 1944Donacia fulgens LeConte, 1851 Donacia galaica Baguena, 1959Donacia geiseltali Goecke, 1959Donacia haupti Goecke, 1959Donacia hirticollis Kirby, 1837 Donacia hiurai Kimoto, 1983Donacia hypoleuca Lacordaire, 1845 Donacia impressa Paykull, 1799 Donacia jacobsoni Semenov & Reichardt, 1927Donacia japana Donacia jaroslavii Lomnicki, 1894Donacia javana Wiedemann, 1821Donacia koenigi Jacobson, 1927Donacia kweilina Chen, 1966Donacia lenzi Schonfeldt Donacia letzneri Assmann, 1870Donacia liebecki C.Schaeffer, 1919 Donacia lignitum Sordelli, 1882Donacia limonia C.Schaeffer, 1925 Donacia lungtanensis Hayashi & Lee, 2009 Donacia lusow Hayashi & Lee, 2007 Donacia lynni Pierce, 1950Donacia magnifica LeConte, 1851 Donacia malinovskyi Ahrens, 1810 Donacia marginata Hoppe, 1795 Donacia mediohirsuta Chen, 1966Donacia megacornis Blatchley, 1910 Donacia microcephala Donacia militaris Lacordaire, 1845 Donacia minuta Haupt, 1956Donacia mistshenkoi Jacobson, 1910Donacia nitidiorDonacia obscura Gyllenhal, 1813 Donacia obtusa Haupt, 1956Donacia ochroleuca Weise, 1912Donacia ozensis Donacia palaemonis Heer, 1847Donacia palmata Olivier, 1795 Donacia parvidens C.Schaeffer, 1919 Donacia piscatrix Lacordaire, 1845 Donacia pitoni Goecke, 1959Donacia polita Kunze, 1818 Donacia pompatica Scudder, 1890Donacia porosicollis Lacordaire, 1845 Donacia provostii Fairmaire Donacia proxima Kirby, 1837 Donacia pterobrachys Haupt, 1956Donacia pubescens LeConte, 1868 Donacia reticulata Gyllenhal, 1817Donacia rottensis Goecke, 1960Donacia rufescens Lacordaire, 1845 Donacia rugosa LeConte, 1878 Donacia semicuprea Panzer, 1796 Donacia simplex Fabricius, 1775 Donacia sparganii Ahrens, 1810 Donacia splendida Théobald, 1935Donacia springeri Müller, 1916 Donacia statzi Goecke, 1943Donacia stiria Scudder, 1890Donacia stirioides Wickham, 1917Donacia subtilis Kunze, 1818 Donacia tenuipunctata Théobald, 1935Donacia texana Crotch, 1873 Donacia thalassina Germar, 1811 Donacia tomentosa Ahrens, 1810 Donacia tuberculata Lacordaire, 1845 Donacia tuberculifrons C.Schaeffer, 1919 Donacia uedana Hayashi, 2000Donacia versicolorea Donacia vicina Lacordaire, 1845 Donacia vietnamensis Kimoto & Gressitt, 1979Donacia voigti Goecke, 1943Donacia vulgaris Zschach, 1788 Donacia weigelti Goecke, 1943Donacia weylandi Goecke, 1960Donacia wightoni Donacia zosterae Fabricius, 1801