frons

1. (anatomy) In vertebrates, especially mammals, the forehead; the part of the cranium between the orbits and the vertex.

2. (entomology) The front part of the epicranium or head capsule of many insects; generally speaking, the area below or between the antennae and above the clypeus. Typically it lies between the genal or "cheek" areas on either side of the head.Examples: "In a generalized insect the frons extends from the vertex to the frontoclypeal (epistomal) suture, between the two anterior tentorial pits."

3. (entomology) (of Diptera) The postfrons.Examples: "In most blondeliines (and in most Tachinidae in general), males have a narrower frons than conspecific females […]"