Rhynchophorini

Rhynchophorini
	Male (left) and female specimens of Cyrtotrachelus dux
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Curculionidae
Subfamily:	Dryophthorinae
Tribe:	Rhynchophorini; Schönherr, 1838

Last updated July 12, 2019

The tribe Rhynchophorini is the largest member of the true weevil subfamily Dryophthorinae. Alonso-Zarazaga and Lyal (1999) treated it as a distinct subfamily, Rhynchophorinae (in the family Dryophthoridae).^[1] Weevils of this tribe have the pygidium (VII abdominal tergite) not covered by the elytra.

In biology, a tribe is a taxonomic rank above genus, but below family and subfamily. It is sometimes subdivided into subtribes. By convention, all taxonomic ranks above genus are capitalized, including both tribe and subtribe.

In biological classification, a subfamily is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoological names with "-inae".

Dryophthorinae is a weevil subfamily within the family Curculionidae. While it is not universally accepted as distinct from other curculionid subfamilies, at least one major recent revision elevated it to family rank, as Dryophthoridae

This tribe includes the largest weevils of the subfamily, such as palm weevils.

Genera and selected species

Abrachius
Cactophagus LeConte, 1876^[2]
Cosmopolites Chevrolat, 1885^[2]
Cyrtotrachelus
- Cyrtotrachelus dux
Dynamis
Macrocheirus
Mahakamia
Metamasius Horn, 1873^[2]
Omotemnus
Otidognathus
Paratasis
Pristirhina
Protocerius
Rhodobaenus LeConte, 1876^[2]
Rhynchodynamis
Rhynchophorinus
Rhynchophorus Herbst, 1795^[2]
- Rhynchophorus palmarum – American Palm Weevil
- Rhynchophorus ferrugineus – Red Palm Weevil
- Rhynchophorus cruentatus – Palmetto Weevil
The South American palm weevil, Rhynchophorus palmarum, is a species of snout beetle. The adults are relatively large black beetles of approximately one and a half inch in length, and the larvae may grow to two inches in length.
The palm weevil Rhynchophorus ferrugineus is one of two species of snout beetle known as the red palm weevil, Asian palm weevil or sago palm weevil. The adult beetles are relatively large, ranging between two and four centimeters long, and are usually a rusty red colour—but many colour variants exist and have often been classified as different species. Weevil larvae can excavate holes in the trunk of a palm trees up to a metre long, thereby weakening and eventually killing the host plant. As a result, the weevil is considered a major pest in palm plantations, including the coconut palm, date palm and oil palm.
The palmetto weevil is an insect native to Florida, but has been found as far as southern Texas to the west and South Carolina to the north. It is the largest weevil in North America and the only kind of palm weevil in the continental United States. It infests palms and is considered a pest. Its main target is the Canary Island date palm, but date palms, sabal palms, saw palmetto, Washingtonia, Pritchardia, royal palms, Latania, coconut palms, Caryota, and Bismarckia are also susceptible. Distressed palm trees are usually attacked, which makes transplanted trees a frequent target. The Palmetto Weevils mate at the base of the palm branches where the females deposit their eggs. The grubs then eat into the palm tree, killing it. After the larvae have turned into adult weevils, the damage can be seen, but by then, it is considered to be too late for the tree. The life cycle from egg to adult for a palmetto weevil is about 84 days. For prevention, it is recommended an appropriate insecticidal crown drench is done twice a year for high value palms.
Scyphophorus Schönherr, 1838^[2]
Sitophilus Schönherr, 1838^[2]
Sphenophorus Schönherr, 1838^[2]

Cosmopolites is a genus of true weevil in the Dryophthorinae subfamily. The type species and most economically important is the banana weevil Cosmopolites sordidus.

Cyrtotrachelus is a genus of beetles belonging to the family Curculionidae.

Cyrtotrachelus dux, the Bamboo beetle or Long Armed Snout Beetle, is a species of beetles belonging to the family Curculionidae.

Related Research Articles

The beetle subfamily Curculioninae is part of the weevil family Curculionidae. It contains over 23,500 described species in 2,200 genera, and is therefore the largest weevil subfamily. Given that the beetle order (Coleoptera) contains about one-quarter of all known organisms, the Curculioninae represent one of the – if not the – most successful radiations of terrestrial Metazoa.

Cossoninae is a true weevil subfamily in the family Curculionidae.

Pachyrhynchini is a true weevil tribe in the subfamily Entiminae.

Otiorhynchini is a true weevil tribe in the subfamily Entiminae.

Ceutorhynchinae is a subfamily of minute seed weevils in the family of beetles known as Curculionidae. There are at least 150 genera and more than 1000 described species in Ceutorhynchinae worldwide.

Lordopini is a weevil tribe in the subfamily Entiminae.

Phyllobiini is a weevil tribe in the subfamily Entiminae.

Polydrosini is a weevil tribe in the subfamily Entiminae.

Tanyrhynchini is a weevil tribe in the subfamily Entiminae.

Notiodes is a genus of marsh weevils in the beetle family Erirhinidae. There are about 16 described species in Notiodes.

Erirhinidae is a family of marsh weevils in the order Coleoptera. There are about 12 genera and at least 40 described species in Erirhinidae.

Apostasimerini is a tribe of flower weevils in the family of beetles known as Curculionidae. There are at least 30 genera and 70 described species in Apostasimerini.

Tychiini is a tribe of leguminous seed weevils in the family of beetles known as Curculionidae. There are about 5 genera and at least 30 described species in Tychiini.

Stenocerini is a tribe of fungus weevils in the subfamily of beetles known as Anthribinae. There are at least sixteen genera in Stenocerini.

Derelomini is a tribe of true weevils in the family of beetles known as Curculionidae. There are about five genera and eight described species in Derelomini.

Conotrachelini is a tribe of true weevils in the family of beetles known as Curculionidae. There are about 7 genera and at least 50 described species in Conotrachelini.

Orthognathini is a tribe of true weevils in the family of beetles known as Curculionidae.

Scleropterini is a tribe of minute seed weevils in the family of beetles known as Curculionidae. There are at least eight genera in Scleropterini.

Smicronychini is a tribe of true weevils in the family of beetles known as Curculionidae. There are at least 7 genera in Smicronychini.

Othippiini is a tribe of true weevils in the beetle family Curculionidae. Of the eight genera in Othippiini, only Egiona and Othippia are not monotypic. Acoptus suturalis is the only species of the tribe found in the New World.

References

↑
- Alonso-Zarazaga, M. A. & Lyal, C.H.C. 1999. A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera, excepting Scolytidae and Platypodidae). Entomopraxis, SCP Edition, Barcelona
1 2 3 4 5 6 7 8 "ITIS, Integrated Taxonomic Information System" . Retrieved 2018-05-04.

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Data related to Rhynchophorini at Wikispecies

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[1] 
Alonso-Zarazaga, M. A. & Lyal, C.H.C. 1999. A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera, excepting Scolytidae and Platypodidae). Entomopraxis, SCP Edition, Barcelona

[mwNg] Alonso-Zarazaga, M. A. & Lyal, C.H.C. 1999. A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera, excepting Scolytidae and Platypodidae). Entomopraxis, SCP Edition, Barcelona

[itis-2] 1 2 3 4 5 6 7 8 "ITIS, Integrated Taxonomic Information System" . Retrieved 2018-05-04.

Rhynchophorini

Male (left) and female specimens of Cyrtotrachelus dux
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Curculionidae
Subfamily:	Dryophthorinae
Tribe:	Rhynchophorini Schönherr, 1838