frons

plural frontes

1. anatomyIn vertebrates, especially mammals, the forehead; the part of the cranium between the orbits and the vertex.
2. biologyThe 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.

   In a generalized insect the frons extends from the vertex to the frontoclypeal (epistomal) suture, between the two anterior tentorial pits.

   1981, J. F. McAlpine, Manual of Nearctic Diptera, volume 1, →ISBN, page 14

3. biology(of Diptera) The postfrons.

   In most blondeliines (and in most Tachinidae in general), males have a narrower frons than conspecific females […]

   1985, D. M. Wood, “A taxonomic conspectus of the Blondeliini of North and Central America and the West Indies (Diptera: Tachinidae)”, in Memoirs of the Entomological Society of Canada, volume 117, →DOI, page 9