''Coelostoma'' is a genus of

beetles Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

belonging to the family

Hydrophilidae Hydrophilidae, also known colloquially as water scavenger beetles, is a family of beetles. Aquatic hydrophilids are notable for their long maxillary palps, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae ...

. The genus was first described by Brullé in 1835. The genus has

cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext ...

, with 111 described species, representing one of the most diverse genera of Hydrophilidae.

Description

Body rather convex, brown to black. Eyes are medium in size, and deeply excised internally. Antenna consists with 9 antennomeres, and loosely segmented antennal club. Mesoventrite consists with a arrow-head shaped median elevation. Metaventrite is longer than mesoventral elevation. There are strongly raised median portion in Metaventrite broadly projecting anteriorly which become abutted to mesoventral process. Elytra lacking serial punctures.

Species

* '' Coelostoma aeneolum'' Régimbart, 1903 * '' Coelostoma aethiopicum'' Orchymont, 1936 * '' Coelostoma afflatum'' Knisch, 1922 * '' Coelostoma alluaudi'' Mouchamps, 1958 * '' Coelostoma anthracinum'' J.Balfour-Browne, 1939 * '' Coelostoma assinicum'' Mouchamps, 1958 * '' Coelostoma austrine'' Mouchamps, 1958 * '' Coelostoma balfourbrownei'' M.Hansen, 1999 * '' Coelostoma basilewskyi'' Mouchamps, 1958 * '' Coelostoma bechynei'' J.Balfour-Browne, 1959 * '' Coelostoma bhutanicum'' Jayaswal, 1972 * '' Coelostoma bibilense'' Hebauer, 2000 * '' Coelostoma bifidum'' Jia, Fenglong, Aston & Fikáček, 2014 * '' Coelostoma bipunctatum'' Jayaswal, 1972 * '' Coelostoma brachaurum'' Mouchamps, 1958 * '' Coelostoma brownei'' Mouchamps, 1958 * '' Coelostoma brunneum'' Mouchamps, 1958 * '' Coelostoma bullosum'' Mouchamps, 1958 * '' Coelostoma camerunense'' Mouchamps, 1958 * '' Coelostoma centrale'' Mouchamps, 1958 * '' Coelostoma collarti'' Mouchamps, 1958 * '' Coelostoma conradsi'' Orchymont, 1936 * '' Coelostoma coomani'' Orchymont, 1932 * '' Coelostoma cooptatum'' Orchymont, 1932 * ''

Coelostoma coortum ''Coelostoma'' is a genus of beetles belonging to the family Hydrophilidae. The genus was first described by Brullé in 1835. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a ...

'' Orchymont, 1932 * '' Coelostoma dentatum'' Knisch, 1924 * '' Coelostoma deplexum'' J.Balfour-Browne, 1950 * '' Coelostoma diversum'' Orchymont, 1932 * '' Coelostoma dolum'' J.Balfour-Browne, 1950 * '' Coelostoma ealanum'' Orchymont, 1941 * '' Coelostoma edwardsi'' J.Balfour-Browne, 1940 * '' Coelostoma erinna'' J.Balfour-Browne, 1950 * '' Coelostoma escalerai'' Hernando, 1997 * '' Coelostoma fabricii'' (Montrouzier, 1860) * '' Coelostoma fallaciosum'' Orchymont, 1936 * '' Coelostoma fallacosum'' Orchymont, 1936 * '' Coelostoma freudei'' Mouchamps, 1958 * '' Coelostoma freyi'' Mouchamps, 1958 * '' Coelostoma gentilii'' Jia, Fenglong, Aston & Fikáček, 2014 * '' Coelostoma hajeki'' Jia, Fenglong, Aston & Fikáček, 2014 * '' Coelostoma himalayanum'' Hebauer, 2002 * '' Coelostoma hirsutum'' Mouchamps, 1958 * '' Coelostoma hispanicum'' (Küster, 1848) * '' Coelostoma homalinum'' Hebauer, 2002 * '' Coelostoma hongkongense'' Jia, Fenglong, Aston & Fikáček, 2014 * '' Coelostoma horni'' (Régimbart, 1902) * '' Coelostoma huangi'' Jia, Fenglong, Aston & Fikáček, 2014 * '' Coelostoma injuratum'' J.Balfour-Browne, 1952 * '' Coelostoma insidiosum'' Mouchamps, 1958 * '' Coelostoma insolitum'' Orchymont, 1936 * '' Coelostoma irregulare'' Hebauer, 2001 * '' Coelostoma jaechi'' Jia, Fenglong, Renchao Lin, Eric Chan, Skale & Fikáček, 2017 * '' Coelostoma jeanneli'' Mouchamps, 1958 * '' Coelostoma kantnerorum'' Hebauer, 2006 * '' Coelostoma lamottei'' J.Balfour-Browne, 1958 * '' Coelostoma lazarense'' Orchymont, 1925 * '' Coelostoma lemuriense'' Mouchamps, 1958 * '' Coelostoma leonense'' J.Balfour-Browne, 1939 * '' Coelostoma lesnei'' Orchymont, 1936 * '' Coelostoma lyratum'' Sheth, Ghate & Fikáček, 2020 * '' Coelostoma marshalli'' J.Balfour-Browne, 1950 * '' Coelostoma martensi'' Hebauer, 2002 * '' Coelostoma medianum'' Hebauer, 2002 * '' Coelostoma mocquerysi'' Orchymont, 1936 * '' Coelostoma montanum'' Mouchamps, 1958 * '' Coelostoma mouchampsi'' M.Hansen, 1999 * '' Coelostoma neavei'' J.Balfour-Browne, 1950 * '' Coelostoma nostocinum'' Sheth, Ghate & Fikáček, 2020 * '' Coelostoma oceanicum'' Mouchamps, 1958 * '' Coelostoma optatum'' J.Balfour-Browne, 1952 * '' Coelostoma orbiculare'' (Fabricius, 1775) * '' Coelostoma orchymonti'' Mouchamps, 1958 * '' Coelostoma orientale'' Mouchamps, 1958 * '' Coelostoma parkeri'' Mouchamps, 1958 * '' Coelostoma phalacroides'' Régimbart, 1903 * '' Coelostoma phallicum'' Orchymont, 1940 * '' Coelostoma picturatum'' Orchymont, 1936 * '' Coelostoma protervum'' J.Balfour-Browne, 1959 * '' Coelostoma proximum'' Mouchamps, 1958 * '' Coelostoma punctulatum'' (Klug, 1833) * '' Coelostoma remotum'' Mouchamps, 1958 * '' Coelostoma rhodesiense'' J.Balfour-Browne, 1950 * '' Coelostoma rhomphea'' Orchymont, 1936 * '' Coelostoma rohani'' Orchymont, 1931 * '' Coelostoma rubens'' Hebauer, 2002 * '' Coelostoma rubiginosum'' J.Balfour-Browne, 1950 * '' Coelostoma rufitarse'' (Boheman, 1851) * '' Coelostoma rusticum'' Orchymont, 1936 * '' Coelostoma rutarum'' Orchymont, 1936 * '' Coelostoma salvazai'' Orchymont, 1919 * '' Coelostoma segne'' J.Balfour-Browne, 1952 * '' Coelostoma simulans'' Orchymont, 1925 * '' Coelostoma solitarium'' Mouchamps, 1958 * '' Coelostoma stultum'' (Walker, 1858) * '' Coelostoma subditum'' Orchymont, 1936 * '' Coelostoma subsphaeroides'' (Régimbart, 1907) * '' Coelostoma subtile'' Orchymont, 1936 * '' Coelostoma surkhetensis'' Hebauer, 2002 * '' Coelostoma syriacum'' Orchymont, 1936 * '' Coelostoma tangliangi'' Jia, Fenglong, Renchao Lin, Eric Chan, Skale & Fikáček, 2017 * '' Coelostoma thienemanni'' Orchymont, 1932 * '' Coelostoma tina'' Spangler & Steiner, 2003 * '' Coelostoma togoense'' Hebauer, 2003 * '' Coelostoma tortuosum'' J.Balfour-Browne, 1959 * '' Coelostoma transcaspicum'' Reitter, 1906 * '' Coelostoma trilobum'' G.Müller, 1942 * '' Coelostoma turnai'' Hebauer, 2006 * '' Coelostoma vagum'' Orchymont, 1940 * '' Coelostoma vitalisi'' Orchymont, 1923 * '' Coelostoma vividum'' Orchymont, 1936 * '' Coelostoma waterstradti'' Orchymont, 1936 * '' Coelostoma wittei'' J.Balfour-Browne, 1950 * '' Coelostoma wui'' Orchymont, 1940 * '' Coelostoma zumpti'' Orchymont, 1937

References

{{Taxonbar, from=Q18115294 Hydrophilidae