Histological sections from a late instar male Peruphasma schultei, stained in Giemsa solution. Scale bars for all are 1 mm in length. The images shown here are exemplary of all observed sections. (A) Fat body. (B) Salivary Glands. (C) Anterior midgut, with notable pleating. (D) Posterior midgut, unpleated and studded with ampullae-tubules of unknown function (labeled with arrows).