Ptinus dubius explained

Ptinus dubius is a species of spider beetle in the family Ptinidae.

Further reading

• Book: Arnett . R.H. Jr.. Thomas . M. C.. Skelley . P. E.. Frank . J. H.. 2002. American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press. 978-0849309540.
• Book: Borowski . Jerzy. Wegrzynowicz . Piotr. 2007. World Catalogue of Bostrichidae (Coleoptera). Wydawnictwo Mantis. 9788392618218.
• Book: LeConte . J.L.. 1861. Classification of the Coleoptera of North America. Smithsonian Miscellaneous Collections. Smithsonian Institution. 3. 136. 0665100558. 10.5962/bhl.title.38459. free.
• Philips . T. Keith. 2000. Phylogenetic analysis of the New World Ptininae (Coleoptera: Bostrichoidea). Systematic Entomology. 25. 2. 235–262. 0307-6970 . 10.1046/j.1365-3113.2000.00102.x. 2000SysEn..25..235P.
• Book: White. Richard E.. 1998. 1983. A Field Guide to the Beetles of North America (Peterson Field Guides). Houghton Mifflin Harcourt. 0395910897. registration.