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Helocombus bifidus : ウィキペディア英語版 | Helocombus bifidus
''Helocombus bifidus'' is a species of hydrophilid beetle and the only species in the genus ''Helocombus''.〔(【引用サイトリンク】publisher=Integrated Taxonomic Information System )〕 ==Description== Adult size ranges from in length. Their maxillary palpi are long and slender with the last segment shorter than the preceding segment and the pseudobasal segment concave inwardly. There is a pyramidal projection medially on the mesosternum, and the elytra have distinct striations. The middle and hind tarsi have four segments, while tarsal claws have a basal tooth in both males and females. The antennae on larvae have basal segments that are slightly shorter of subequal to the remaining segments, with sensorium on the apex of segment 2. The labroclypeus has several smaller central teeth and two larger teeth on each side. The mandibles are symmetrical, and both have two inner teeth. Larvae also have well developed legs, and the ligula is subequal to the length of the first palpal segment.〔
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「Helocombus bifidus」の詳細全文を読む
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