Thelazioidea
![Trichospirura aethiopica Bain & Junker, 2013,[1] an example of Rhabdochonidae](/uploads/202502/15/lossy-page1-220px-Trichospirura_aethiopica_n._sp._(Nematoda_Rhabdochonidae)_fig1.tif5143.jpg)
Thelazioidea is a superfamily of spirurian nematodes in the large order Spirurida. Like all nematodes, they have neither a circulatory nor a respiratory system.
Among the families placed here, only the Rhabdochonidae are notably diverse. though none is considered to be monotypic Consequently, the Thelazioidea are among the mid-sized superfamilies of Spirurida.