[R] Family of phytophagous Coleoptera called weevils; imago often blackish, with a pronounced rostrum bearing the antennae and the mouthparts. The rostrum serves as a boring instrument, drilling holes in which eggs are laid. The larvae are short, fleshy, apodous and live as endophytes or within the soil. This family includes a large number of pests such as the chestnut weevil
(Curculio elephas) and the nut weevil
(C. nucum) on fruit trees; the turnip and cabbage gall weevil
(Ceuthorhynchus pleurostigma), the cabbage seed weevil
(C. assimilis) and the rape stem weevil
(C. napi) on the Cruciferae; the (Conorrhynchus mendicus) on beet and the lucerne weevil
(Hypera postica) on the Leguminosae.
* Curculionidae: head and rostrum (INRA)
a: rostrum; b: antenna; c: compound eye.
2: tip of the rostrum (ventral view).
a: mandible; b: maxillary palpus; c: labium and labial palpi.
* Development of hemimetabolous insects (INRA)
Exemple of a weewil (Curculionidae).
From left to right: new-borne larva, fully grown larva, pupa, adult.
HYPPZ on line: Species (scientific names), Pests (common names), Glossary, Crops.