# Entiminae

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{{short description|Subfamily of beetles}}
{{Automatic taxobox
| image = Reitter-1916-plate155.jpg
| image_caption = Central European Entiminae, with some anatomical details
| taxon = Entiminae
| authority = [Schoenherr](/source/Carl_Johan_Sch%C3%B6nherr), 1826
| diversity_link = #Tribes
| diversity = 55 tribes
}}
[[File:Deciduous-process.png|alt=Dorsal views of the head of Compsus auricephalus (Eustylini) and Apodrosus quisqueyanus (Polydrusini) showing their deciduous processes. In Compsus auricephalus the deciduous processes are large and sickle-shaped, whereas in Apodrosus quisqueyanus these are very small.|right|thumb|upright|Dorsal views of the head of ''[Compsus auricephalus](/source/Compsus_auricephalus)'' ([Eustylini](/source/Eustylini)) and ''[Apodrosus quisqueyanus](/source/Apodrosus_quisqueyanus)'' ([Polydrusini](/source/Polydrosini)) showing their deciduous processes.]]
[[File:Pseudoedophrys hilleri.jpg|thumb|right|upright|''[Pseudoedophrys hilleri](/source/Pseudoedophrys_hilleri)'']]
[[File:Head of Compsus auricephalus indicating mandibular scar.png|alt=Frontal view of the head of Compsus auricephalus indicating the mandibular scar.|right|thumb|upright|Head of ''[Compsus auricephalus](/source/Compsus_auricephalus)'' indicating mandibular scar.]]
The '''Entiminae''', or '''broad-nosed weevils''', are a large subfamily in the [weevil](/source/weevil) family [Curculionidae](/source/Curculionidae), containing most of the short-nosed weevils, including such genera as ''[Entimus](/source/Entimus)'', ''[Otiorhynchus](/source/Otiorhynchus)'', ''[Phyllobius](/source/Phyllobius)'', ''[Sitona](/source/Sitona)'', and ''[Pachyrrhynchus](/source/Pachyrhynchus)''. In comparison with their stunning diversity, only a few of these weevils are notorious [pest](/source/pest_(organism))s of major economic importance. Entimines are commonly encountered in the field, including urban environments, and abundant in entomological collections.

== Diversity ==
There are over 12,000 described species in the Entiminae subfamily worldwide, distributed in over 1,370 genera,<ref name=":0">{{Cite book |last1=Marvaldi |first1=A. E. |chapter= Entiminae Schoenherr, 1823. |editor1=Leschen, R. and R. G. Beutel. |title= Handbook of Zoology, Arthropoda: Insecta: Coleoptera, Volume 3: Morphology and Systematics (Phytophaga) |last2=Lanteri |first2=A. A. |last3=del Río |first3=M. G. |last4=Oberprieler |first4=R. G. |publisher=De Gruyter |year=2014 |location=Berlin |pages=503–522 |language=en}}</ref> which total nearly 14,000 by more recent counts.<ref>{{Cite journal|last=Yunakov|first=N.|title=3i taxonomic databases, Curculionidae, subfamily Entiminae {{!}} COL|url=https://www.catalogueoflife.org/data/dataset/1166|access-date=2021-12-20|website=www.catalogueoflife.org|year=2021|doi=10.48580/d4sl-3f8}}</ref> Most tribes are represented in only one biogeographic region of the world. The current classification within the subfamily has been recognized as artificial rather than reflecting natural groups.<ref name=":0" />

== General morphology ==
Besides the shape of their broad and short rostrum, most entimines are easily recognized by the presence of a mandibular scar that appears when a deciduous process falls off the mandible, shortly after the emergence of the adult from the pupal stage.<ref name=":1">{{Cite book |last1=Anderson |first1=R. S. |chapter=131 Curculionidae Latreille, 1802, XII Entiminae Schoenherr, 1823 |editor=Arnett, R.H. |editor2=M.C. Thomas |editor3=P.E. Skelley |editor4=J.H. Frank |title=American Beetles |volume=II: Polyphaga: Scarabaeoidea through Curculionoidea |last2=Howden |first2=A. T. |publisher=CRC Press |year=2002 |location=Boca Raton, FL |pages=722–815 |language=en}}</ref>

== Ecology ==
In general, entimines tend to feed on a broad range of plants ([polyphagous](/source/polyphagous)), but there are instances of [oligophagy](/source/oligophagy). In general, the larvae feed externally on roots in the soil and adults feed on foliage.<ref name=":0" /><ref name=":1" /> They also show preference for habitat or substrate rather than plant specificity.<ref name=":0" /> 

Entimine weevils are primarily associated with [angiosperms](/source/Flowering_plant), but there are also species recorded from [gymnosperms](/source/Gymnosperm). They feed on [monocotyledonous](/source/Monocotyledon) and a broad range of [dicotyledoneous](/source/Dicotyledon) plants, including members of the families [Fabaceae](/source/Fabaceae), [Malvaceae](/source/Malvaceae), [Rutaceae](/source/Rutaceae), [Solanaceae](/source/Solanaceae), and many more.<ref name=":0" />

The most commonly seen/known species are usually those associated with vegetation, where there is a trend to find more abundance and less diversity in cultivated areas, whereas forested or less disturbed areas tend to have more diversity and less abundance; there is a lot of diversity represented in the soil and on leaf litter, which is often overlooked.<ref>{{Cite journal|last=Girón|first=Jennifer C.|date=2020-12-30|title=Status of knowledge of the broad-nosed weevils of Colombia (Coleoptera, Curculionidae, Entiminae) |journal=Neotropical Biology and Conservation|language=en|volume=15 |issue=4 |pages=583–674|doi=10.3897/neotropical.15.e59713 |doi-access=free |issn=2236-3777}}</ref>

The most effective method for collecting entimines from vegetation is with a beating sheet or by manual collecting; for soil entimines the best method is leaf litter sifting.{{cn|date=November 2025}}

== Biology ==
Entimines may lay eggs loosely on the substrate, or in clusters glued onto the vegetation<ref>{{Cite journal|last=Howden|first=A. T.|date=1995|title=Structures related to oviposition in Curculionoidea|journal=Memoirs of the Entomological Society of Washington|volume=14|pages=53–102}}</ref> and do not use their rostrum to prepare their oviposition site.<ref name=":0" /> Over 50 species of entimines have been reported as parthenogenetic.<ref name=":0" />

The [integument](/source/integument) of entimines can be black, reddish, orange and even metallic in coloration. Many species of Entiminae are covered by scales arranged in a broad variety of patterns. Those scales bear three dimensional [photonic crystals](/source/Photonic_crystal)<ref>{{Cite journal|last1=Seago|first1=Ainsley E|last2=Brady|first2=Parrish|last3=Vigneron|first3=Jean-Pol|last4=Schultz|first4=Tom D|date=2009-04-06|title=Gold bugs and beyond: a review of iridescence and structural colour mechanisms in beetles (Coleoptera)|journal=Journal of the Royal Society Interface|volume=6|issue=suppl_2|pages=S165–S184|doi=10.1098/rsif.2008.0354.focus |doi-access=free |pmc=2586663|pmid=18957361}}</ref> within their lumen, which makes the scales iridescent.<ref name=":0" />

Many species are flightless, which usually can be seen externally: the elytral shoulders (outer anterior corners of the [elytra](/source/Elytron)) are reduced to absent in apterous and brachypterous forms and well-developed in species with well-developed wings.
alt=Three drawings: first one on the left, shoulders absent (outer corner of elytra straight); center, shoulders weakly developed (outer corner of elytra slightly curved); right, shoulders well-developed (outer corners of elytra prominent)|center|thumb|upright=2.8|Variation on development of elytral shoulders in entimine weevils.

== Tribes ==
	
The current tribal classification of Entiminae follows Alonso-Zarazaga & Lyal<ref>{{Cite book |last1=Alonso-Zarazaga |first1=M. A. |last2=Lyal |first2=C. H. C. |title=A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera) excluding Scolytidae and Platypodidae |publisher=Entomopraxis |year=1999 |location=Barcelona, Spain |pages=315 pp |url=https://weevil.myspecies.info/sites/weevil.info/files/Alonso-Zarazaga%20%26%20Lyal,%201999_World%20Catalogue%20%28searchable%29.pdf |language=en |via=International Weevil Community }}{{Dead link|date=January 2026 |bot=InternetArchiveBot }}</ref> for the most part, with a few updates by Bouchard et al.<ref>{{Cite journal|last1=Bouchard|first1=Patrice|last2=Bousquet|first2=Yves|last3=Davies|first3=Anthony|last4=Alonso-Zarazaga|first4=Miguel|last5=Alonso-Zarazaga|first5=Miguel|last6=Lawrence|first6=John|last7=Lyal|first7=Christopher|last8=Newton|first8=Alfred|last9=Reid|first9=Chris|last10=Schmitt|first10=Michael|last11=Slipinski|first11=Adam|date=2011-04-04|title=Family-Group Names In Coleoptera (Insecta) |journal=ZooKeys|language=en|issue=88|pages=1–972|doi=10.3897/zookeys.88.807 |doi-access=free |issn=1313-2970|pmc=3088472|pmid=21594053}}</ref> The latest tribal addition is the Namaini Borovec & Meregalli.<ref>{{Cite journal|last1=Meregalli|first1=Massimo|last2=Borovec|first2=Roman|last3=Cervella|first3=Piero|last4=Santovito|first4=Alfredo|last5=Toševski|first5=Ivo|last6=Ottati|first6=Sara|last7=Nakládal|first7=Oto|date=2021-09-01|title=The Namaini, a new weevil tribe with six new genera from South Africa (Coleoptera: Curculionidae: Entiminae) |journal=Zoological Journal of the Linnean Society|volume=193|issue=1|pages=95–123|doi=10.1093/zoolinnean/zlaa142 |doi-access=free|issn=0024-4082|url=https://iris.unito.it/bitstream/2318/1771217/1/103_Namaini.pdf}}</ref> Currently, there are 55 tribes recognized in the subfamily.

A key to identify tribes is presented by Legalov.<ref>{{Cite journal|last=Legalov|first=A. A.|date=2020|title=Annotated key to weevils of the world: Part 5 - Subfamily Entiminae (Curculionidae)|url=https://www.ujecology.com/articles/annotated-key-to-weevils-of-the-world-part-5--subfamily-entiminae-curculionidae.pdf |journal=Ukrainian Journal of Ecology|volume=10 |issue=2 |pages=332–346}}</ref>

{{div col}}
* [Agraphini](/source/Agraphini)
* [Alophini](/source/Alophini) 
* [Anomophthalmini](/source/Anomophthalmini)
* [Anypotactini](/source/Anypotactini)
* [Blosyrini](/source/Blosyrini)
* [Brachyderini](/source/Brachyderini)
* [Celeuthetini](/source/Celeuthetini)
* [Cneorhinini](/source/Cneorhinini)
* [Cratopodini](/source/Cratopodini)
* [Cylydrorhinini](/source/Cylydrorhinini) 
* [Cyphicerini](/source/Cyphicerini)
* [Dermatodini](/source/Dermatodini)
* [Ectemnorhinini](/source/Ectemnorhinini)
* [Elytrurini](/source/Elytrurini)
* [Embrithini](/source/Embrithini)
* [Entimini](/source/Entimini)
* [Episomini](/source/Episomini)
* [Eudiagogini](/source/Eudiagogini)
* [Eupholini](/source/Eupholini)
* [Eustylini](/source/Eustylini)
* [Geonemini](/source/Geonemini)
* [Holcorhinini](/source/Holcorhinini)
* [Hormorini](/source/Hormorini)
* [Laparocerini](/source/Laparocerini)
* [Leptostethini](/source/Leptostethini)
* [Lordopini](/source/Lordopini)
* [Mesostylini](/source/Mesostylini)
* [Myorhinini](/source/Myorhinini)
* [Nastini](/source/Nastini)
* [Namaini](/source/Namaini)
* [Naupactini](/source/Naupactini)
* [Nothognathini](/source/Nothognathini)
* [Omiini](/source/Omiini)
* [Oosomini](/source/Oosomini)
* [Ophryastini](/source/Ophryastini)
* [Ophtalmorrhynchini](/source/Ophtalmorrhynchini)
* [Otiorhynchini](/source/Otiorhynchini)
* [Ottistirini](/source/Ottistirini)
* [Pachyrhynchini](/source/Pachyrhynchini)
* [Peritelini](/source/Peritelini)
* [Phyllobiini](/source/Phyllobiini)
* [Polycatini](/source/Polycatini)
* [Polydrusini](/source/Polydrusini)
* [Premnotrypini](/source/Premnotrypini)
* [Pristorhynchini](/source/Pristorhynchini)
* [Prypnini](/source/Prypnini)
* [Psallidiini](/source/Psallidiini)
* [Rhyncogonini](/source/Rhyncogonini)
* [Sciaphilini](/source/Sciaphilini)
* [Sitonini](/source/Sitonini)
* [Tanymecini](/source/Tanymecini)
* [Tanyrhynchini](/source/Tanyrhynchini)
* [Thecesternini](/source/Thecesternini)
* [Trachyphloeini](/source/Trachyphloeini)
* [Tropiphorini](/source/Tropiphorini)
* [Typhlorhinini](/source/Typhlorhinini) 
{{div col end}}

== References ==
{{Reflist}}

==Further reading==
*Donald E. Bright, Patrice Bouchard. ''The Insects and Arachnids of Canada'', Part 25: ''Coleoptera. Curculionidae. Entiminae. Weevils of Canada and Alaska''. Vol. 2. Ottawa, NRC Research Press, 2008. {{ISBN|0-660-19400-7}}.

==External links==
{{Sister project links |collapsible=yes |b= |c= |n=n |q=n |s= |v=n |wikt=n}}
{{Taxonbar|from=Q1932939}}

Category:Entiminae
Category:Beetle subfamilies

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Adapted from the Wikipedia article [Entiminae](https://en.wikipedia.org/wiki/Entiminae) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Entiminae?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.
