The beaver parasite Platypsyllus castor, photographed by Lech Borowiec.

Belongs within: Polyphaga.

The Leiodidae are mostly scavenging or fungivorous beetles, often found in decaying organic matter. A number of species of leiodid are known from caves.

Characters (from Lawrence & Britton 1991): Moderately small beetles with more or less spiny legs and usually simple tarsi, abdomen usually entirely concealed by elytra. Antennae eleven-segmented, usually with five-segmented antennal club, second segment of club (antennal segment 8) smaller than either first or third, club sometimes very weak with antennal segment 8 only slightly reduced, or very strong with 8 greatly reduced or absent, unique internal sensory vesicles usually opening on distal surfaces of segments 7, 9 and 10. Larvae active, campodeiform, urogomphi almost always articulated at base; mandibular mola and two apical maxillary lobes (galea and lacinia) present.

    |  i. s.: Paracatops brunneipes E02
    |         Scotocryptus GE05
    |         Catopidius GE05
    |         Silphopsyllus desmanae GE05, A71
    |         Neopelatops AY04
    |         Anisotoma N88
    |--Platypsyllus [Acheiroptera, Platypsyllidae, Platypsyllinae] GE05
    |    `--P. castor GE05
    `--Leptodirini [Cholevinae] PN02
         |--Antroherpon dombrowskii Apfelbeck 1907 PN02
         |--Haplotropidius taxi Müller 1903 PN02
         |--Spelaetes grabowskii Apfelbeck 1907 PN02
         `--Radziella Casale & Jalžić 1988 PN02
              `--*R. styx Casale & Jalžić 1988 PN02

*Type species of generic name indicated


[A71] Askew, R. R. 1971. Parasitic Insects. Heinemann Educational Books: London.

[AY04] Austin, A. D., D. K. Yeates, G. Cassis, M. J. Fletcher, J. La Salle, J. F. Lawrence, P. B. McQuillan, L. A. Mound, D. J. Bickel, P. J. Gullan, D. F. Hales & G. S. Taylor. 2004. Insects 'Down Under' - diversity, endemism and evolution of the Australian insect fauna: examples from select orders. Australian Journal of Entomology 43 (3): 216-234.

[E02] Emberson, R. M. 2002. The beetle (Coleoptera) fauna of the Chatham Islands: Additions and corrections. New Zealand Entomologist 25: 69-77.

[GE05] Grimaldi, D., & M. S. Engel. 2005. Evolution of the Insects. Cambridge University Press: New York.

Lawrence, J. F., & E. B. Britton. 1991. Coleoptera. In: CSIRO. The Insects of Australia: a textbook for students and research workers, vol. 2, pp. 543-683. Melbourne University Press.

[N88] Noonan, G. R. 1988. Biogeography of North American and Mexican insects, and a critique of vicariance biogeography. Systematic Zoology 37 (4): 366-384.

[PN02] Poggi, R., G. Nonveiller, A. Colla, D. Pavićević & T. Rađa. 2001-2002. Thaumastocephalini, a new tribe of Pselaphinae for Thaumastocephalus folliculipalpus n. gen., n. sp., an interesting new troglobious species from central Dalmatia (Croatia) (Coleoptera, Staphylinidae, Pselaphinae). Annali del Museo Civico di Storia Naturale “Giacomo Doria” 94: 1-20.

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