{{Short description|Genus of beetles}} {{Speciesbox | image = Mecistomela_marginata.jpg | display_parents = 3 | parent_authority = Jacobson, 1899 | taxon = Mecistomela marginata | authority = (Thunberg, 1821) | synonyms = *''Alurnus marginata'' <small>Thunberg, 1821</small> *''Hispa bordée'' <small>Latreille, 1829</small> *''Mecistomela marginata brevenotata'' <small>Pic, 1922</small> *''Mecistomela marginata corallina'' <small>Pic, Blackwelder, 1946</small> *''Mecistomela marginata dissecta'' <small>Jacobson, 1899</small> *''Mecistomela marginata reducta'' <small>Pic, 1922</small> *''Alurnus circumdata'' <small>Schönherr, 1837</small> *''Alurnus cruciata'' <small>Thunberg, 1821</small> }} '''''Mecistomela''''' is a genus of leaf beetles in the family Chrysomelidae. It is monotypic, being represented by the single species, '''''Mecistomela marginata''''', which is found in Brazil (Bahia, Distrito Federal, Goiás, Minas Gerais, Paraná, Rio de Janeiro, Santa Catarina, São Paulo).
==Description== Adults reach a length of about 23–34 mm. Adults are black, with the pronotum and elytron with orange markings.
==Biology== They have been recorded feeding on ''Arecastrum romanoffianum'', ''Allagoptera arenaria'', ''Cocos nucifera'', ''Diplothemium'' species, ''Livistona'' species (including ''Livistona chinensis''), ''Copernicia'' species, ''Elaeis guineensis'', ''Phoenix'' species, ''Cocos botyophora'' and ''Cocos campestris''.<ref>{{cite web |last= Staines|first= C.L.|date= 2012|title= Hispines of the World.|url= https://idtools.org/beetles/hispines/|website= |location= |publisher= USDA/APHIS/PPQ Science and Technology and National Natural History Museum.|access-date= August 26, 2025}}</ref>
==References== {{Reflist}}
{{Taxonbar|from=Q2373162}}
Category:Chrysomelidae genera Category:Monotypic beetle genera Category:Beetles described in 1821 Category:Cassidinae
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