Construction of the eggshell, a product of the somatic follicle cell epithelium and a structure that supports the egg in a hostile environment, minimizing water loss whilst allowing gas exchanges essential for embryonic respiration. [ https://www.worldcat.org/search?q=bn%3A0879694238 GOC:mtg_sensu http://www.ncbi.nlm.nih.gov/pubmed/10822261 ]