Hemiptera plant. Phloem sap, which has a higher concentration of sugars and nitrogen, is under positive pressure unlike the more dilute xylem sap. Most of the Sternorrhyncha and a number of Auchenorrhynchan groups feed on phloem. Phloem feeding is common in the Fulgoromorpha, most Cicadellidae and in the Heteroptera. The Typhlocybine Cicadellids specialize in feeding on non-vascular mesophyll tissue of leaves, which is more nutritious than the leaf epidermis. Most Heteroptera also feed on mesophyll tissue where they are more likely to encounter defensive secondary plant metabolites which often leads to the evolution of host specificity. Obligate xylem feeding is a
Sugary Drinks Portion Cap Rule On June 26, 2014, the New York Court of Appeals, the state's highest court, ruled that the New York City Board of Health, in adopting the Sugary Drinks Portion Cap Rule, exceeded the scope of its regulatory authority. The amendment was repealed on July 9, 2015, effective August 8, 2015. Sugary Drinks Portion Cap Rule The Sugary Drinks Portion Cap Rule, also known as the Soda Ban, was a proposed limit on soft drink size in New York City intended to prohibit the sale of many sweetened drinks more than 16 ounces (0.47 liters) in volume to have taken effect