Sphenophorus aequalis explained

Sphenophorus aequalis, the clay-coloured billbug, is a species of beetle in the family Dryophthoridae. It is found in North America.

Subspecies

These five subspecies belong to the species Sphenophorus aequalis:

• Sphenophorus aequalis aequalis Gyllenhal, 1838
• Sphenophorus aequalis ochreus
• Sphenophorus aequalis pictus
• Sphenophorus aequalis scirpi Chittenden
• Sphenophorus aequalis univitta Chittenden

Further reading

• Book: Catalogue of Palaearctic Coleoptera, Volume 7: Curculionoidea I. 2013. Lobl . I.. Smetana . A.. Apollo Books. 978-90-04-26093-1.
• Book: Catalogue of Palaearctic Coleoptera, Volume 8: Curculionoidea II. 2013. Lobl . I.. Smetana . A.. Apollo Books. 978-90-04-25916-4.