Ekphymatodera Baldwin, Bernard & Mundo-Ocampo, 1989

Ghaderi, Reza, 2019, An outline on distribution and hosts of the cystoid nematodes of Ataloderinae Wouts, 1973 and Meloidoderinae Golden, 1971, Zootaxa 4664 (3), pp. 339-350 : 342-343

Ekphymatodera Baldwin, Bernard & Mundo-Ocampo, 1989

The only species, E. thomasoni Baldwin, Bernard & Mundo-Ocampo, 1989 , was recovered from roots and surrounding soil of common rush ( Juncus effusus L. var. pacificus , Juncaceae ) from a meadow on the south bank of the Merced River in Yosemite Valley, Yosemite National Park, California, USA. Additional specimens were collected from the type host near the Oregon coast at Del Norte County Fairgrounds, Crescent City, California, USA ( Baldwin et al.,1989).

E. thomasoni induces a poorly defined syncytium on Carex and Juncus hosts which is distinctive from that of all other Heteroderinae examined. The unusual syncytium is morphologically intermediate between the thick-walled single uninucleate giant cell of Sarisoderini and the large multinucleate syncytium lacking wall ingrowths in Ataloderini ( Mundo-Ocampo & Baldwin 1991, 1992).