Ptinus

 Whitemarked spider beetle Ptinus fur, copyright Joseph Berger.

Belongs within: Ptinidae.

Ptinus, spider beetles, is a cosmopolitan genus of long-legged beetles with elytra bearing a vestiture of appressed scales or setae. A number of species are widespread as storage pests. The species P. latro is parthenogenetic but still requires mating with males of related species to induce egg formation (Philips 2002).

Characters (from Philips 2002): Antennae with 11 antennomeres; raised portion of frons between antennal fossae equal to less than 1/4 length of antennal scape; punctures in anterior 1/5 to 1/3 of pronotum round or ovoid, not large or distinctly visible in most, often obscured by setae; elytral surface punctate, surface of elytra not obscured by scales and punctures easily visible and oriented in longitudinal rows; elytral setal maculations, if present, highly variable; hind trochanters short, not reaching margin of elytra when projected perpendicular to longitudinal axis of the body; coxal plates absent; ventrites nearly equal in width to elytra when viewed ventrally; most with first and second ventrite sutures complete and distinctly impressed at middle.

<==Ptinus Linnaeus 1767P02
    `--P. (Gynopterus Mulsant & Rey 1868)P02
Ptinus incertae sedis:
  P. adeps Olliff 1886M86
  P. albomaculatus Macleay 1872M86
  P. attritus Olliff 1886M86
  P. bicinctusC01
  P. californicusP02
  P. carinatus Lucas 1846E12
  P. clavipes [incl. P. mobilis]B70
  P. egenus Olliff 1886M86
  P. elegansR26
  P. eminens Olliff 1886M86
  P. exulans Erichs. 1842M86
  P. fossulatus Lucas 1846E12
  P. fur Linn. 1761M86
  P. gibbicollis Lucas 1846E12
  P. hirticollis Lucas 1846E12
  P. imulus Olliff 1886M86
  P. latefasciatusP02
  P. latroC01
  P. longus Olliff 1886M86
  P. mauritanicus Lucas 1846E12
  P. obesus Lucas 1846E12
  P. pusillusLB91
  P. rotundicollis Lucas 1846E12
  P. rufus Lucas 1846E12
  P. tectusLB91 [incl. P. pilosus White 1846M86]

*Type species of generic name indicated

References

[B70] Britton, E. B. 1970. Coleoptera (beetles). In: CSIRO. The Insects of Australia: A textbook for students and research workers pp. 495–621. Melbourne University Press.

[C01] Csiki, E. 1901. Bogarak [Coleopteren]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 75–120. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.

[E12] Evenhuis, N. L. 2012. Publication and dating of the Exploration Scientifique de l’Algérie: Histoire Naturelle des Animaux Articulés (1846–1849) by Pierre Hippolyte Lucas. Zootaxa 3448: 1–61.

[LB91] Lawrence, J. F., & E. B. Britton. 1991. Coleoptera (beetles). In: CSIRO. The Insects of Australia: A textbook for students and research workers 2nd ed. vol. 2 pp. 543–683. Melbourne University Press: Carlton (Victoria).

[M86] Masters, G. 1886. Catalogue of the described Coleoptera of Australia. Part IV. Proceedings of the Linnean Society of New South Wales, series 2, 1 (2): 259–380.

[P02] Philips, T. K. 2002. Anobiidae Fleming 1821. In: Arnett, R. H., Jr, M. C. Thomas, P. E. Skelley & J. H. Frank (eds) American Beetles vol. 2. Polyphaga: Scarabaeoidea through Curculionoidea pp. 245–260. CRC Press.

[R26] Risso, A. 1826. Histoire naturelle des principales productions de l’Europe méridionale et particulièrement de celles des environs de Nice et des Alpes maritimes vol. 5. F.-G. Levrault: Paris.

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