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Baridinae
Baridinae is a subfamily of true weevils (Curculionidae). It was established by Carl Johan Schönherr in 1836. Some 4,300 species in 550 genera are placed here, most of which occur in the New World.〔(【引用サイトリンク】 author = Morimoto, Katsura and Yoshihara, Kazumi )〕 A few are economically significant pests, while others are in turn used for biocontrol of invasive plant pests. This subfamily also contains a few endangered species.
==Description and ecology==
Baridinae are typically small to mid-sized short-legged weevils, with a characteristic round or ball-like shape.〔(【引用サイトリンク】 author = Davis, Steven R )〕 Usually colored black all over at least on the upperside, they are neither highly glossy or metallic, nor dull, but moderately shiny, like polished leather. Some have small dots or bands of lighter scales that can be rubbed off, in particular on the elytrae; yet again others are dusted with an irregular sprinkling of such scales. The elytrae are often decorated with neat lengthwise rows of small pits.
The pronotum is not highly arched and may be outright flattened; it has rounded corners and it is about as wide as the elytrae. The rostrum ("snout") is long, markedly curved, and directed more or less straight downwards. The antenna attach near the tip of the rostrum; they are bent in the center and have a knop at the tip, as in other true weevils. The proximal antenna segment is stick-shaped. There are 12 antennal segments.
These weevils feed on plants as larvae and imagines, mainly on the green parts. The larvae are often stem borers. Their foodplants can be found almost all over the Mesangiospermae; they are often of the cabbage family (Brassicaceae), e.g. cabbages (''Brassica napus'' cultivars) and Rapeseed (''B. oleracea''). Another type of foodplant are mignonettes (''Reseda''), Resedaceae and thus close relatives of the Brassicaceae. ''Acuthopeus cocciniae'' is used for biocontrol of Ivory Gourd (''Coccinia grandis''), a Cucurbitaceae which belongs to a lineage of rosids well distant from the Brassicaceae. Some Baridinae are found on ''Helianthus'' (typical sunflowers) of the Asteraceae, which are asterid eudicots quite unrelated to the cabbage family. And ''Orchidophilus'' is particular to Epidendroideae orchids – especially ''Dendrobium'' and ''Phalaenopsis'' –, which are monocots and thus even more distant relatives of the usual Baridinae foodplants.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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