Ecumenicus monohystera
de Man, 1880

1.1 mm; a = 30; b = 4.5; c = 28; V = 35

Lips distinct, the region set off by slight expansion.  Spear 11u long with aperature 1/3 its length.  Guiding ring refractive, about 1/3 head width.  Esophagus a slender, nonmuscular tube in anterior 3/5, then about half neck width in posterior 2/5.  Dorsal esophageal gland nucleus only slightly behind its pore.  Pairs of submedian gland pores arranged similar to those of Eudorylaimus.  A slight isthmus joins esophagus and cardia.  Cardia discoid, then bluntly conoid.  Small hyaline structures in cardiac region.  Cells of intestine with scattered dark granules.  Prerectum length 2-3 times body width.
     Ecumenicus monohystera is world-wide in distribution.  Morphological characters and measurements of specimens from different continents are most remarkable for their similarity.

DNA Sequences Obtained

Specimen:	Collected:
Konza Wallow 12	Konza Prairie, Preliminary Survey
Konza IGG-46	Konza Prairie, First survey