Placonotus

Placonotus
	Placonotus macrognathus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	Pancrustacea
Class:	Insecta
Order:	Coleoptera
Suborder:	Polyphaga
Infraorder:	Cucujiformia
Superfamily:	Cucujoidea
Family:	Laemophloeidae
Genus:	Placonotus; MacLeay, 1871

Placonotus is a genus of beetles in the family Laemophloeidae. There are 40 currently recognized species, known from all continents except Antarctica. Placonotus species are small (~2mm), elongate, flattened beetles, characterized by long filiform antennae, presence of a frontoclypeal suture, open anterior coxal cavities, and broadly rounded intercoxal process of abdominal ventrite III. Males have the 8th abdominal segment modified to form claspers used during mating.^[1] Adults and larvae are found under dead bark, where they feed on fungi. Currently recognized species are:

Placonotus africanus Lefkovitch
Placonotus arizonensis Thomas
Placonotus bolivari Grouvelle
Placonotus debanus Mukhopadhyay
Placonotus decoratus Grouvelle
Placonotus dolce Lefkovitch
Placonotus donacioides Wollaston
Placonotus ealaensis Lefkovitch
Placonotus embuensis Thomas
Placonotus exornatus Grouvelle
Placonotus falinorum Thomas
Placonotus gladiator Thomas
Placonotus granulatus Wollaston
Placonotus himalaicus Mukhopadhyay & Sen Gupta
Placonotus infimus Sharp
Placonotus keralicus Mukhopadhyay & Sen Gupta
Placonotus macrognathus Thomas
Placonotus majus Lefkovitch
Placonotus maya Thomas
Placonotus mestus Lefkovitch
Placonotus modestus Say
Placonotus mossus Lefkovitch
Placonotus nitens LeConte
Placonotus orientalis Grouvelle
Placonotus pallentipennis Reitter
Placonotus patruelis Thomas
Placonotus planifrons Thomas
Placonotus politissimus Wollaston
Placonotus proximus Grouvelle
Placonotus pseudomodestus Thomas
Placonotus pseudoproximus Mukhopadhyay & Sen Gupta
Placonotus rigidus Olliff
Placonotus saudicus Slipinski
Placonotus subgranulatus Grouvelle
Placonotus subtestaceus Grouvelle
Placonotus subtruncatus Lefkovitch
Placonotus tastus Lefkovitch
Placonotus testaceus Fabricius
Placonotus torsus Mukhopadhyay & Sen Gupta
Placonotus zimmermanni LeConte

The genus has been treated taxonomically for several geographical regions: the New World;^[1] Africa;^[2] Europe;^[3] and India.^[4] The Asian, Pacific, and Australian faunas have not been worked and there are probably many unassigned and undescribed species.

References

1 2 Thomas, M.C. 1984. A revision of the New World species of Placonotus Macleay (Coleoptera: Cucujidae: Laemophloeinae). Occasional Papers of the Florida State Collection of Arthropods 3:vii + 28pp.
↑ Lefkovitch, L.P. 1962. A revision of African Laemophloeinae (Coleoptera: Cucujidae). Bulletin British Museum of Natural History (Entomology) 12:167-245.
↑ Lefkovitch, L.P. 1959. A revision of European Laemophloeinae (Coleoptera: Cucujidae). Transactions of the Royal Entomological Society of London 111:95-118.
↑ Mukhopadhyay, P., and T. Sen Gupta. 1977. Studies on Placonotus (Coleoptera: Cucujidae: Laemophloeinae) from India. Oriental Insects 11: 555-566.

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[Thomas1984-1] 1 2 Thomas, M.C. 1984. A revision of the New World species of Placonotus Macleay (Coleoptera: Cucujidae: Laemophloeinae). Occasional Papers of the Florida State Collection of Arthropods 3:vii + 28pp.

[2] Lefkovitch, L.P. 1962. A revision of African Laemophloeinae (Coleoptera: Cucujidae). Bulletin British Museum of Natural History (Entomology) 12:167-245.

[3] Lefkovitch, L.P. 1959. A revision of European Laemophloeinae (Coleoptera: Cucujidae). Transactions of the Royal Entomological Society of London 111:95-118.

[4] Mukhopadhyay, P., and T. Sen Gupta. 1977. Studies on Placonotus (Coleoptera: Cucujidae: Laemophloeinae) from India. Oriental Insects 11: 555-566.

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References