Passalidae: Difference between revisions
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'''Passalidae''' is a [[Family (biology)|family]] of [[beetle]]s known variously as "'''bessbugs'''",<ref name="Florida">{{cite web |url=http://eny3005.ifas.ufl.edu/lab1/Coleoptera/Passalid.htm |title=Family Identification. Coleoptera: Passalidae |author=John L. Foltz |publisher=[[University of Florida]] |date=2001-07-08 |url-status=dead |archive-url=https://web.archive.org/web/20081218143544/http://eny3005.ifas.ufl.edu/lab1/Coleoptera/Passalid.htm |archive-date=2008-12-18 }}</ref> "bess beetles",<ref name="Florida"/> "betsy beetles",<ref name="Florida"/> "betsy bugs", or "horned passalus beetles". Nearly all of the 500 | '''Passalidae''' is a [[Family (biology)|family]] of [[beetle]]s known variously as "'''bessbugs'''",<ref name="Florida">{{cite web |url=http://eny3005.ifas.ufl.edu/lab1/Coleoptera/Passalid.htm |title=Family Identification. Coleoptera: Passalidae |author=John L. Foltz |publisher=[[University of Florida]] |date=2001-07-08 |url-status=dead |archive-url=https://web.archive.org/web/20081218143544/http://eny3005.ifas.ufl.edu/lab1/Coleoptera/Passalid.htm |archive-date=2008-12-18 }}</ref> "bess beetles",<ref name="Florida"/> "betsy beetles",<ref name="Florida"/> "betsy bugs", or "horned passalus beetles". Nearly all of the approximately 500 species are tropical; species found in [[North America]] are notable for their size, ranging from 20 to 43 mm, for having a single "horn" on the head, and for a form of [[social behavior]] unusual among beetles. | ||
Bodies are elongate-cylindrical and black overall; ventral surfaces may be covered with yellow [[setae]]. The head is narrower than the thorax, with [[antenna (biology)|antennae]] consisting of 10 [[antennomere]]s with a three-segment club. The [[elytra]] are elongate with parallel sides, and heavily striated. | Bodies are elongate-cylindrical and black overall; ventral surfaces may be covered with yellow [[setae]]. The head is narrower than the thorax, with [[antenna (biology)|antennae]] consisting of 10 [[antennomere]]s with a three-segment club. The [[elytra]] are elongate with parallel sides, and heavily striated. | ||
They are [[Sociality#quasisocial|quasisocial]] (common nest + brood caring) beetles that live in groups within rotting logs or stumps.<ref>{{Cite web|url=http://www.museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Passalidae/Passalidae-Overview/PassalidaeO.html|title=Generic Guide to New World Scarab Beetles-Scarabaeoidea-Passalidae Overview|website=www.museum.unl.edu|access-date=2017-01-22}}</ref> The beetles will excavate tunnel systems within rotting wood where the females then lay their eggs.<ref>{{Cite news|url=http://insects.about.com/od/beetles/p/Bess-Beetles-Family-Passalidae.htm|title=What Are Bess Beetles?|newspaper=About.com Education|access-date=2017-01-22}}</ref> They care for their young by preparing food for them and helping the [[larva]]e construct the [[pupa|pupal case]]. Both adults and larvae must consume adult feces which have been further digested by [[Flora (microbiology)|microflora]] for a time; an arrangement that might be described as a sort of external [[rumen]]. | They are [[Sociality#quasisocial|quasisocial]] (common nest + brood caring) beetles that live in groups within rotting logs or stumps.<ref>{{Cite web|url=http://www.museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Passalidae/Passalidae-Overview/PassalidaeO.html|title=Generic Guide to New World Scarab Beetles-Scarabaeoidea-Passalidae Overview|website=www.museum.unl.edu|access-date=2017-01-22|archive-date=2018-09-30|archive-url=https://web.archive.org/web/20180930061043/http://museum.unl.edu/research/entomology/Guide/Scarabaeoidea/Passalidae/Passalidae-Overview/PassalidaeO.html|url-status=dead}}</ref> The beetles will excavate tunnel systems within rotting wood where the females then lay their eggs.<ref>{{Cite news|url=http://insects.about.com/od/beetles/p/Bess-Beetles-Family-Passalidae.htm|title=What Are Bess Beetles?|newspaper=About.com Education|access-date=2017-01-22}}{{Dead link|date=August 2025 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> They care for their young by preparing food for them and helping the [[larva]]e construct the [[pupa|pupal case]]. Both adults and larvae must consume adult feces which have been further digested by [[Flora (microbiology)|microflora]] for a time; an arrangement that might be described as a sort of external [[rumen]]. | ||
They are also able to produce fourteen [[Animal communication|acoustical signals]], more than many [[vertebrate]]s. Adults produce the sounds by rubbing the upper surface of the [[abdomen]] against the [[insect wing|hind wings]]. The larvae produce the sounds by rubbing the third leg against a striated area on the [[Arthropod coxa|coxa]] of the second leg. | They are also able to produce fourteen [[Animal communication|acoustical signals]], more than many [[vertebrate]]s. Adults produce the sounds by rubbing the upper surface of the [[abdomen]] against the [[insect wing|hind wings]]. The larvae produce the sounds by rubbing the third leg against a striated area on the [[Arthropod coxa|coxa]] of the second leg. | ||
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==Genera== | ==Genera== | ||
*''{{ill|Aceraius|es}} – {{ill|Analaches|es}} – [[Aponelides]] – {{ill|Aulacocyclus|es}} – {{ill|Austropassalus|es}} – {{ill|Basilianus ( | *''{{ill|Aceraius|es}} – {{ill|Analaches|es}} – [[Aponelides]] – {{ill|Aulacocyclus|es}} – {{ill|Austropassalus|es}} – {{ill|Basilianus (beetle)|lt=Basilianus|es|Basilianus}} – [[Cacoius]] – [[Ceracupes]] – {{ill|Cetejus|es}} – [[Cicernonius]] – {{ill|Comacupes|es}} – [[Cylindrocaulus]] – [[Didimus]] – [[Epishenus]] – [[Episphenoides]] – [[Eumelosomus]] – [[Flaminius (beetle)|Flaminius]] – {{ill|Gonatas|es}} – [[Heliscus]] – [[Hincksius]] – {{ill|Labienus (beetle)|lt=Labienus|es|Labienus}} – {{ill|Leptaulax|es}} – {{ill|Macrolinus|es}} – [[Malagasulus]] – [[Mastochilus]] – [[Neleides (beetle)|Neleides]] – [[Neleuops]] – [[Nelues]] – [[Ninus (beetle)|Ninus]] – [[Odontotaenius]] – {{ill|Ogyges (beetle)|lt=Ogyges|es|Ogyges}} – [[Oileus (beetle)|Oileus]] – [[Ophrygonius]] – [[Orgyes]] – [[Paratiberioides]] – [[Passalus]] – [[Passipassalus]] – {{ill|Paxillus (beetle)|lt=Paxillus|es|Paxillus (animal)}} – {{ill|Pelopides|es}} – [[Pelops (beetle)|Pelops]] – [[Pentalobus]] – {{ill|Petrejoides|es}} – [[Petrejus]] – [[Pharochilus]] – [[Phoroneus (beetle)|Phoroneus]] – [[Plesthenus]] – [[Pleurarius]] – [[Popilius (beetle)|Popilius]] – [[Proculejus]] – {{ill|Proculus (beetle)|lt=Proculus|es|Proculus (animal)}} – [[Protomocoelus]] – {{ill|Pseudepisphenus|es}} – {{ill|Pseudoarrox|es}} – [[Ptichopus]] – {{ill|Publius (beetle)|lt=Publius|es|Veturius (Publius)}} – [[Rhodocanthopus]] – {{ill|Semicyclus|es}} – {{ill|Solenocyclus|es}} – {{ill|Spasalus|es}} – [[Spurius]] – {{ill|Taeniocerus|es}} – {{ill|Tarquinius (beetle)|lt=Tarquinius|es|Tarquinius}} – [[Tiberioides]] – [[Trichopleurus]] – [[Undulifer]] – [[Verres (beetle)|Verres]] – {{ill|Veturius|es}} – [[Vindex (beetle)|Vindex]] – {{ill|Vitellinus|es}} – {{ill|Xylopassaloides|es}}'' | ||
==Selected species== | ==Selected species== | ||
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:''[[Odontotaenius floridanus]]'' | :''[[Odontotaenius floridanus]]'' | ||
:''[[Odontotaenius striatopunctatus]]'' | :''[[Odontotaenius striatopunctatus]]'' | ||
*Genus ''[[Ogyges ( | *Genus ''[[Ogyges (beetle)|Ogyges]]'' | ||
:''[[Ogyges laevior]]'' | :''[[Ogyges laevior]]'' | ||
*Genus ''[[Oileus ( | *Genus ''[[Oileus (beetle)|Oileus]]'' | ||
:''[[Oileus rimator]]'' | :''[[Oileus rimator]]'' | ||
*Genus ''[[Passalus]]'' | *Genus ''[[Passalus]]'' | ||
| Line 90: | Line 90: | ||
*Genus ''[[Popilius (beetle)|Popilius]]'' | *Genus ''[[Popilius (beetle)|Popilius]]'' | ||
:''[[Popilius eclipticus]]'' | :''[[Popilius eclipticus]]'' | ||
*Genus ''[[Proculus ( | *Genus ''[[Proculus (beetle)|Proculus]]'' | ||
:''[[Proculus burmeisteri]]'' | :''[[Proculus burmeisteri]]'' | ||
:''[[Proculus mniszechi]]'' | :''[[Proculus mniszechi]]'' | ||
*Genus ''[[Ptichopus]]'' | *Genus ''[[Ptichopus]]'' | ||
:''[[Ptichopus angulatus]]'' | :''[[Ptichopus angulatus]]'' | ||
*Genus ''[[Publius ( | *Genus ''[[Publius (beetle)|Publius]]'' | ||
:''[[Publius agassizi]]'' | :''[[Publius agassizi]]'' | ||
*Genus ''[[Spasalus]]'' | *Genus ''[[Spasalus]]'' | ||
| Line 101: | Line 101: | ||
*Genus ''[[Spurius]]'' | *Genus ''[[Spurius]]'' | ||
:''[[Spurius bicornis]]'' | :''[[Spurius bicornis]]'' | ||
*Genus ''[[Verres ( | *Genus ''[[Verres (beetle)|Verres]]'' | ||
:''[[Verres corticicola]]'' | :''[[Verres corticicola]]'' | ||
:''[[Verres hageni]]'' | :''[[Verres hageni]]'' | ||
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==External links== | ==External links== | ||
{{Commons category|Passalidae}} | {{Commons category|Passalidae}} | ||
*[http://entnemdept.ifas.ufl.edu/creatures/misc/beetles/horned_passalus.htm ''Odontotaenius disjunctus''] on the [[University of Florida|UF]] / [[Institute of Food and Agricultural Sciences|IFAS]] Featured Creatures Web site | *[http://entnemdept.ifas.ufl.edu/creatures/misc/beetles/horned_passalus.htm ''Odontotaenius disjunctus''] on the [[University of Florida|UF]] / [[Institute of Food and Agricultural Sciences|IFAS]] Featured Creatures Web site | ||
* [http://bio.acousti.ca/taxonomy/term/587 Sound recording of Passalidae at BioAcoustica] | * [http://bio.acousti.ca/taxonomy/term/587 Sound recording of Passalidae at BioAcoustica] | ||
Latest revision as of 00:41, 7 November 2025
Template:Short description Template:Automatic taxobox
Passalidae is a family of beetles known variously as "bessbugs",[1] "bess beetles",[1] "betsy beetles",[1] "betsy bugs", or "horned passalus beetles". Nearly all of the approximately 500 species are tropical; species found in North America are notable for their size, ranging from 20 to 43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles.
Bodies are elongate-cylindrical and black overall; ventral surfaces may be covered with yellow setae. The head is narrower than the thorax, with antennae consisting of 10 antennomeres with a three-segment club. The elytra are elongate with parallel sides, and heavily striated.
They are quasisocial (common nest + brood caring) beetles that live in groups within rotting logs or stumps.[2] The beetles will excavate tunnel systems within rotting wood where the females then lay their eggs.[3] They care for their young by preparing food for them and helping the larvae construct the pupal case. Both adults and larvae must consume adult feces which have been further digested by microflora for a time; an arrangement that might be described as a sort of external rumen.
They are also able to produce fourteen acoustical signals, more than many vertebrates. Adults produce the sounds by rubbing the upper surface of the abdomen against the hind wings. The larvae produce the sounds by rubbing the third leg against a striated area on the coxa of the second leg.
While the taxonomy of Nearctic species is well-known (four species in the US, and 90 in Mexico), bess beetles in other parts of the world need further study.
Of North American species, Odontotaenius disjunctus (synonym: Popilius disjunctus) is the familiar bessbug found throughout the eastern US and Canada, while O. floridanus has only been found in Florida on sand hills that used to be islands when Florida was flooded thousands of years ago. Ptichopus angulatus was recentlyScript error: No such module "Unsubst". discovered near the border of Mexico in Arizona. Its habitat is south to Colombia and it is commonly associated with the detritus chambers of leafcutter ant nests (Atta spp.). Two other species were reported from Arizona at the beginning of the 20th century, but have not been seen there since that time; they may have been brought from Mexico by a train hauling firewood.
The oldest records of the family go back to the Cretaceous, with the genus Ceracyclus known from two species found in the Cenomanian aged Burmese amber; the genus appears to be closely related to the living genus Cylindrocaulus.[4] The family has been suggested to have a close relationship with the extinct family Passalopalpidae.[5]
Genera
- Template:Ill – Template:Ill – Aponelides – Template:Ill – Template:Ill – Template:Ill – Cacoius – Ceracupes – Template:Ill – Cicernonius – Template:Ill – Cylindrocaulus – Didimus – Epishenus – Episphenoides – Eumelosomus – Flaminius – Template:Ill – Heliscus – Hincksius – Template:Ill – Template:Ill – Template:Ill – Malagasulus – Mastochilus – Neleides – Neleuops – Nelues – Ninus – Odontotaenius – Template:Ill – Oileus – Ophrygonius – Orgyes – Paratiberioides – Passalus – Passipassalus – Template:Ill – Template:Ill – Pelops – Pentalobus – Template:Ill – Petrejus – Pharochilus – Phoroneus – Plesthenus – Pleurarius – Popilius – Proculejus – Template:Ill – Protomocoelus – Template:Ill – Template:Ill – Ptichopus – Template:Ill – Rhodocanthopus – Template:Ill – Template:Ill – Template:Ill – Spurius – Template:Ill – Template:Ill – Tiberioides – Trichopleurus – Undulifer – Verres – Template:Ill – Vindex – Template:Ill – Template:Ill
Selected species
- Genus Aceraius
- Genus Aulacocyclus
- Genus Ceracupes
- Genus Chondrocephalus
- Genus Cylindrocaulus
- Genus Didimus
- Genus Heliscus
- Genus Leptaulax
- Genus Odontotaenius
- Odontotaenius disjunctus (patent-leather beetle)
- Odontotaenius floridanus
- Odontotaenius striatopunctatus
- Genus Ogyges
- Genus Oileus
- Genus Passalus
- Passalus affinis
- Passalus caelatus
- Passalus elfriedae
- Passalus inops
- Passalus interruptus
- Passalus interstitialis
- Passalus jansoni
- Passalus latifrons
- Passalus pugionifer
- Passalus punctatostriatus
- Passalus punctiger
- Passalus spiniger
- Passalus unicornis
- Genus Paxillus
- Genus Pentalobus
- Genus Petrejoides
- Genus Popilius
- Genus Proculus
- Genus Ptichopus
- Genus Publius
- Genus Spasalus
- Genus Spurius
- Genus Verres
- Genus Veturius
See also
- Austroplatypus incompertus, an unrelated species that also lives in wood and shows sociality
Footnotes
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References
- Jack C. Schuster, "Passalidae", in Ross H. Arnett Jr. and Michael C. Thomas, American Beetles (CRC Press, 2002), vol. 2
- BugGuide Passalidae
External links
- Odontotaenius disjunctus on the UF / IFAS Featured Creatures Web site
- Sound recording of Passalidae at BioAcoustica
Template:Coleoptera Template:Taxonbar Template:Authority control