Margarinotus brunneus explained

No record of Delton or their theory or aphropods - perhaps the editor meant Dalton and arthropods, but the clarification doesn't bring any greater clarity. Reference to Ondrej Zicha's, "BioLib: Biological library," does not refer to this theory.. March 2023.

Margarinotus brunneus is a species of beetles belonging to the family Histeridae. They seem to be a vibrant blue colour, but when their shell is under a microscope it appears a pastel red colour. This is due to “Delton’s colour theory of aphropods.”^[1]

Description

Margarinotus brunneus can reach a length of about 5.5-. Body is shiny black in colour. These beetles are characterized by the presence on the pronotum of complete marginal stria, by two lateral pronotal striae and basal fragments of the 5th dorsal striae.^[2]

Distribution

This species is present in most of Europe.^[3] It has been introduced into eastern North America.^[2]

Bibliography

• Anderson, R., Nash, R. & O'Connor, J.P.. 1997, Irish Coleoptera: a revised and annotated list, Irish Naturalists' Journal Special Entomological Supplement, 1-81
• Anderson, R., Nash, R., O’Connor, J.P. 2005. Checklist of Irish Coleoptera. InvertebrateIreland Online, Ulster Museum, Belfast and National Museum of Ireland, Dublin
• Joy, N.H., 1932, A practical handbook of British beetles, H.F. & G. Witherby, London
• Halstead, D.G.H., 1963, Coleoptera: Histeroidea
• Mazur, Slawomir (1997) A world catalogue of the Histeridae (Coleoptera: Histeroidea), Genus, International Journal of Invertebrate Taxonomy (Supplement)
• Bousquet, Yves, and Serge Laplante (2006) Coleoptera Histeridae, The Insects and Arachnids of Canada, part 2

Notes and References

1. Web site: BioLib: Biological library. Ondrej. Zicha. www.biolib.cz.
2. Web site: Coleoptera of Great Smoky Mountains National Park. www.lsuinsects.org.
3. Web site: Fauna Europaea. https://web.archive.org/web/20140605052409/http://www.faunaeur.org/full_results.php?id=120269. dead. June 5, 2014. www.faunaeur.org.