Pachyrrhynchus

...An insect of the Curculionidae family in the Coleoptera order. It is black and shiny, with long thoracic legs. The elytra have a row of small dots. Its body length is about 13 mm. It is found in the Yaeyama Islands and feeds on the leaves of trees such as Castanopsis sieboldii, but is said to be more common on Kanko trees. The larvae bore holes into dead wood. The Pachyrrhynchus weevils are found mainly in New Guinea and the Philippines, and there are about 420 known species. The Yaeyama Islands are the northern limit of the distribution of the Pachyrrhynchus weevils. As their name suggests, the bodies of the Pachyrrhynchus weevils are extremely hard, and many of them have beautiful markings. ...

*Some of the terminology that mentions "Pachyrrhynchus" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…甲虫目ゾウムシ科の昆虫。黒色で光沢があり，胸脚が長い。上翅には小点刻列がある。体長13mm内外。八重山列島に分布し，スダジイなどの葉を食べるが，カンコノキに多いといわれる。幼虫は枯木中に穿孔（せんこう）する。カタゾウムシ類Pachyrrhynchusはニューギニアやフィリピンを分布の中心に，約420種が知られている。八重山列島はカタゾウムシ類の分布の北限に当たる。カタゾウムシ類は，その名のように体がきわめて堅く，また美しい斑紋をもつものが多い。…

※「Pachyrrhynchus」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報