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''Megalodacne'' is a genus of fungivorous beetles in the family Erotylidae. ==Description== Adult beetles of the genus ''Megalodacne'' range in size from , making them among the larger members of the family. Distinguishing characteristics of the genus along with other members of the subfamily Megalodacninae include large eyes and a lack of depressions in the club joint of the antennae. The first three tarsomeres are also cylindrical and of similar shape and size, while the fourth is significantly shorter.〔 Species of the genus ''Megalodacne'' very closely resembles members of the genera ''Episcapha'' and ''Episcaphula'' (some members of which were formerly classified under ''Megalodacne'').〔〔 They also often look superficially similar to several other beetles since the patterns of the markings of yellow, orange, or red on the elytra (called ''fascia'') of ''Megalodacne'' are shared by many other beetle species.〔 An example of which is the sap beetle (Nitidulidae) genus ''Glischrochilus''. Their native ranges sometimes overlap as well, making it easy to confuse the two (as with ''Megalodacne fasciatus'', ''Megalodacne heros'', and the nitulidid ''Glischrochilus fasciatus'' from eastern North America). The best way to tell them apart is by size, as sap beetles are generally small, ranging from in length. ''Glischrochilus'' reaches a maximum length of only .〔(''Glischrochilus obtusus'' )〕 ''Megalodacne'' on the other hand are large beetles ranging from .〔 The elytra of the sap beetles which most resemble ''Megalodacne'' also do not cover the whole abdomen and leave the last abdominal segment(s) exposed.〔 The elytra of ''Megalodacne'', on the other hand, completely cover the abdomen. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Megalodacne」の詳細全文を読む スポンサード リンク
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