Fortuynia Hammen, 1960

Pfingstl, Tobias, Hiruta, Shimpei F., Hagino, Wataru & Shimano, Satoshi, 2021, Juvenile morphology of seven intertidal mite species (Acari, Oribatida, Ameronothroidea) from the East Asian region, International Journal of Acarology 47 (6), pp. 536-554 : 537

Genus Fortuynia Hammen, 1960

Common features of juvenile stages

Apheredermous. Colour dark brown. Integument plicate and soft, except for centrodorsal plate. Prodorsum triangular, rostrum rounded, cerotegument overall finely granular. Rostral seta (ro) thin, long, lamellar seta (le) also thin but slightly shorter. Minute or alveolar exobothridial (ex) and interlamellar seta (in). Bothridium small cup-like and laterally opened. Sensillum short, clavate. Gnathosoma no obvious differences from adult stage. Gastronotum oval in dorsal view, slightly convex in lateral view. Posterior half of centrodorsal plate with lesser sclerotized area resembling inverted Y, present in nymphs. Large folds framing centrodorsal plate, showing fine granular surface. Orifice of opisthonotal gland gla located in posterior third of lateral folds. Legs with paraxial porous areas present on all femora.