Placonotus

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

Placonotus
Placonotus macrognathus
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Suborder:
Polyphaga
Superfamily:
Cucujoidea
Family:
Laemophloeidae
Genus:
Placonotus

MacLeay, 1871

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 unnassigned and undescribed species.

References
  1. 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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