According to " International Union of Crystallography " journal, the " milk " produced by the Pacific beetle cockroach ( " Diploptera punctata " ) is one of the most nutritious foods on earth.
2.
Comparatively recently, a peptide was isolated from the cockroach " Diploptera punctata " that showed no similarity to any known insect peptide but did show some similarity to vertebrate calcitonin ( Furuya et al ., 2000 ).