Gnostus

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Bostrichiformia
Superfamilia: Bostrichoidea

Familia: Ptinidae
Subfamilia: Ptininae
Genus: Gnostus
References

Lawrence, J.F.; Reichardt, H. 1966: Revision of the genera Gnostus and Fabrasia (Coleoptera: Ptinidae). Psyche, 73: 30–45. [1]

Gnostus is a genus of spider beetles in the family Ptinidae. There is one described species in Gnostus, G. floridanus.[1][2][3][4]
References

"Gnostus Report". Integrated Taxonomic Information System. Retrieved 2019-09-24.
"Gnostus". GBIF. Retrieved 2019-09-24.
"Gnostus genus Information". BugGuide.net. Retrieved 2019-09-24.

Zahradník, Petr; Háva, Jiří (2014). "Catalogue of the world genera and subgenera of the superfamilies Derodontoidea and Bostrichoidea (Coleoptera: Derodontiformia, Bostrichiformia)". Zootaxa. 3754 (4): 301–52. doi:10.11646/zootaxa.3754.4.1. PMID 24869695.

Further reading

Thomas, M. C.; Skelley, P. E.; Lundgren, R. W. (1992). "New records for Gnostus floridanus (Coleoptera: Ptinidae) and observations on its behavior". The Florida Entomologist. 75 (2): 287–289. doi:10.2307/3495635. JSTOR 3495635.
Borowski, Jerzy; Wegrzynowicz, Piotr (2007). World Catalogue of Bostrichidae (Coleoptera). Wydawnictwo Mantis. ISBN 9788392618218.
Arango, Rachel A.; Young, Daniel K. (2012). Death-watch and spider beetles of Wisconsin (Coleoptera: Ptinidae) (PDF). General Technical Report. FPL–GTR–209. U. S. Department of Agriculture, Forest Service.
Lobl, I.; Smetana, A., eds. (2007). Catalogue of Palaearctic Coleoptera, Volume 4: Elateroidea - Derodontoidea - Bostrichoidea - Lymexyloidea - Cleroidea - Cucujoidea. Apollo Books. ISBN 978-8788757675.