Xyleborinus exiguus explained

Xyleborinus exiguus, is a species of weevil widely distributed throughout the Old World tropics and introduced to African and South American countries.[1] [2]

Distribution

It is native to India, Andaman Islands, Sri Lanka, Cambodia, China, Laos, Myanmar, Nepal, Taiwan, Thailand, Vietnam, Australia, Cook Islands, Micronesia, Fiji, Guam, Indonesia, Malaysia, Mariana Islands, New Guinea, Niue Island, Philippines, Samoa, Solomon Islands, Tahiti. It is also introduced to West African countries such as Angola, Cameroon, Congo, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Zaire as well as in Central American countries: Costa Rica, and Panamá.[3]

Description

This small, elongate-cylindrical beetle is about 1.8 to 2.0 mm long. This weevil can be identified by the declivital face with interstriae 2 which is unarmed by tubercles. Elytral apex is attenuate, with three pairs of large flattened tubercles. The declivital interstriae is flat, and the interstriae 2 is not impressed.[4]

A polyphagous species, it is found from many host plants.[5]

Host plants

Notes and References

  1. Web site: Bark and Ambrosia Beetles of, Xyleborinus exiguus (Walker 1859) (introduced) . 2021-09-04 . www.barkbeetles.info.
  2. Eliassen . Jonas M . Jordal . Bjarte H . 2021-05-01 . Integrated Taxonomic Revision of Afrotropical Xyleborinus (Curculionidae: Scolytinae) Reveals High Diversity After Recent Colonization of Madagascar . 2021-09-04 . Insect Systematics and Diversity . 5 . 3 . 10.1093/isd/ixab011. free .
  3. Web site: SE Asian Ambrosia Beetle ID: Fact sheet . 2021-09-04 . idtools.org.
  4. Web site: Ongoing invasions of old-growth tropical forests: establishment of three incestuous beetle species in southern Central America (Curculionidae: Scolytinae) . 2021-09-04 . zootaxa.
  5. Web site: Beaver . R. A. . Sittichaya . W. . Liu . L-Y. . 2014-10-21 . Xyleborinus exiguus . 10.5281/zenodo.5131050 . 2021-09-04.