Glischrochilus quadrisignatus

Glischrochilus quadrisignatus, known generally as four-spotted sap beetle, is a species of sap-feeding beetle in the family Nitidulidae. Other common names include the beer bug and picnic beetle.^{[1][2][3][4][5][6]} It is found in North America.^[1]

Four-spotted sap beetle, Glischrochilus quadrisignatus

Glischrochilus quadrisignatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Nitidulidae
Genus:	Glischrochilus
Species:	G. quadrisignatus
Binomial name
Glischrochilus quadrisignatus (Say, 1835)
Synonyms[1]
Glischrochilus canadensis Brown, 1932 Glischrochilus sexpustulatus (Reitter, 1873) Glischrochilus similis (Melsheimer, 1846)

Four-spotted sap beetles (and other sap beetles) feed on fruits and vegetables that are either damaged, overripe, or decomposing. At times they can also feed on intact fruits and vegetables after first being attracted to and feeding on the damaged or decomposing fruits and vegetables. They often leave deep holes in fruits and vegetables. These look similar to holes made by slugs.^[6]

The University of Minnesota Extension program recommends sanitation as the best method for managing sap beetles in a garden. They also say that pesticides are not very effective and they recommend against using them to manage sap beetles. Bait traps may be set out as an alternative management option using overripe fruit or other baits.^[6]

References

1. "Glischrochilus quadrisignatus Report". Integrated Taxonomic Information System. Archived from the original on 2018-04-01. Retrieved 2018-03-31.
2. "Glischrochilus quadrisignatus species details". Catalogue of Life. Archived from the original on 2018-04-01. Retrieved 2018-03-31.
3. "Glischrochilus quadrisignatus". GBIF. Archived from the original on 2018-04-01. Retrieved 2018-03-31.
4. "Glischrochilus quadrisignatus Species Information". BugGuide.net. Archived from the original on 2018-04-01. Retrieved 2018-03-31.
5. "Glischrochilus quadrisignatus Overview". Encyclopedia of Life. Archived from the original on 2018-04-01. Retrieved 2018-03-31.
6. Wold-Burkness, Suzanne; Hahn, Jeffrey (2021). "Sap beetles in home gardens". University of Minnesota Extension. Archived from the original on 2024-05-17. Retrieved 2024-03-29.

Further reading

• Arnett, R.H. Jr.; Thomas, M. C.; Skelley, P. E.; Frank, J. H., eds. (2002). American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press. ISBN 978-0849309540.
• Habeck, Dale H. (2002). Arnett, Ross H. Jr.; Thomas, Michael C.; Skelley, Paul E.; Frank, J.H. (eds.). Family 77. Nitidulidae Latreille 1802. American Beetles vol. 2, Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press. pp. 311–315. ISBN 0-8493-0954-9.
• LeConte, J.L. (1861). Classification of the Coleoptera of North America. Smithsonian Miscellaneous Collections. Vol. 3. Smithsonian Institution. doi:10.5962/bhl.title.38459. ISBN 0665100558. Archived from the original on 2019-08-31. Retrieved 2018-04-01.
• Lord, Nathan Patrick; Hartley, Christopher S.; Lawrence, John F.; McHugh, Joseph V.; et al. (2010). "Phylogenetic analysis of the minute brown scavenger beetles (Coleoptera: Latridiidae), and recognition of a new beetle family, Akalyptoischiidae fam. n. (Coleoptera: Cucujoidea)". Systematic Entomology. 35 (4): 753–763. doi:10.1111/j.1365-3113.2010.00532.x. ISSN 0307-6970. S2CID 54735522.
• Price, M.B.; Young, D.K. (2006). "An annotated checklist of Wisconsin sap and short-winged flower beetles (Coleoptera: Nitidulidae, Kateretidae)". Insecta Mundi. 20: 69–84. Archived from the original on 2020-12-05. Retrieved 2018-04-01.
• White, Richard E. (1998) [1983]. A Field Guide to the Beetles of North America (Peterson Field Guides). Houghton Mifflin Harcourt. ISBN 0395910897.

External links

• Media related to Glischrochilus quadrisignatus at Wikimedia Commons