Hemorrhage in a Coccinellid Beetle and Its Repellent Effect on Ants

See allHide authors and affiliations

Science  04 Aug 1961:
Vol. 134, Issue 3475, pp. 329-331
DOI: 10.1126/science.134.3475.329


Special refinements of the bleeding mechanism of the Mexican bean beetle, Epilachna varivestis Mulsant, are described, and the defensive effectiveness of the mechanism against ants is demonstrated. Ants may have provided a major selective force in the evolution of the mechanism.