 The ovipositor is long, with the sheath slightly extending over the tip of the metasoma.As the specific name suggests, "M. aresconoides" is very similar to the extant genus "Arescon" in wing shape and venation.Only three other modern mymarid genera ("Boudiennyia", "Eustochomorpha", and "Borneomymar") share all the "M. aresconoides" characteristics of having forewing venation longer than half the wing length, five segments on the tarsi, and eight segments on the funicles.