Orthorhinus cylindrirostris

Orthorhinus cylindrirostris, commonly known as the elephant weevil,[1] is a species of Curculionidae. In Australia they are considered a major pest to wine companies.[2]

Elephant weevil
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Family:
Curculionidae
Subfamily:
Molytinae
Tribe:
Pissodini
Genus:
Orthorhinus
Species:
O. cylindrirostris
Binomial name
Orthorhinus cylindrirostris
Schönherr (1825)

Description

Color and size are extremely variable with the adult size ranging between 10 and 20mm. Typically there is a tubercle on both sides of the pronotum, both elytron have two tubercles on the 2nd interstices. The 5th interstice has similar tubercle on posterior declivity. A male's antennae are much closer to the apex of the rostrum, they also have longer forelegs than females. The three basal tarsal segments are more expanded in the male than the female. Females are less cylindrical, more coarse and shorter than the males.[3][4]

Life cycle

The weevil and larvae both feed on various species of Eucalypts.

  • Female elephant weevil
    Female elephant weevil

References
  1. "Elephant weevil: Orthorhinus cylindrirostris (Coleoptera: Curculionidae)". Retrieved 2008-12-21.
  2. "Elephant Weevil (Orthorhinus cylindrirostris) impact and control in vineyards State 3: Field assessment and grower survey" (PDF). Retrieved 2008-12-21.
  3. "PaDIL". Retrieved 2008-12-21.
  4. "elephant weevil, Orthorhinus cylindrirostris (Coleoptera: Curculionidae) @ Forestry Images". Retrieved 2008-12-21.
Wikispecies has information related to Orthorhinus cylindrirostris.


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