Fortuynia rotunda, from here.

Belongs within: Poronoticae.

The Fortuyniidae are a group of oribatid mites found in intertidal habitats in tropical and subtropical regions.

Characters (from Norton & Behan-Pelletier 2009): Length 400–500 µm. Gnathosoma normal; chelicerae with dentate chelae, with two setae. Prodorsum without true lamellae; bothridial setae reduced. Octotaxic system absent; ;ateral plastron (Van der Hammen’s organ) present. Genital plates with six pairs of setae; lyrifissure iad positioned beside or posterior to ad3. Tibiae and tarsi partially fused; tarsus II with two solenidia.

    |--Circellobates Luxton 1992S04
    |    `--*C. venustus Luxton 1992S04
    |--Alismobates Luxton 1992S04
    |    |--*A. reticulatus Luxton 1992S04
    |    |--A. inexpectatus Pfingstl & Schuster 2012PK14
    |    `--A. rotundus Luxton 1992S04
    `--Fortuynia Hammen 1960S04
         |--*F. marina Hammen 1960S04
         |--F. atlantica Krisper & Schuster 2008PK14
         |--F. dimorpha Pfingstl 2015PH22
         |--F. elamellata Luxton 1967S04
         |    |--F. e. elamellataS04
         |    |--F. e. micromorpha Marshall & Pugh 2002S04
         |    `--F. e. shibai Aoki 1974S04
         |--F. inhambanensis Marshall & Pugh 2002S04
         |--F. maculata Luxton 1986S04
         |--F. rotunda Marshall & Pugh 2002S04
         |--F. sinensis Luxton 1992S04
         |--F. smitiPH22
         `--F. yunkeri Hammen 1963S04

*Type species of generic name indicated


Norton, R. A., & V. M. Behan-Pelletier. 2009. Suborder Oribatida. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 430–564. Texas Tech University Press.

[PH22] Pfingstl, T., S. F. Hiruta, I. Bardel-Kahr, Y. Obae & S. Shimano. 2022. Another mite species discovered via social media—Ameronothrus retweet sp. nov. (Acari, Oribatida) from Japanese coasts, exhibiting an interesting sexual dimorphism. International Journal of Acarology 48 (4–5): 348–358.

[PK14] Pfingstl, T., & G. Krisper. 2014. Plastron respiration in marine intertidal oribatid mites (Acari, Fortuyniidae and Selenoribatidae). Zoomorphology 133: 359–378.

[S04] Subías, L. S. 2004. Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60 (número extraordinario): 3–305.

Leave a comment

Your email address will not be published. Required fields are marked *