The M. ventralis group

The males of this group have the posterior margin of ventrite 1 produced caudad into a gentle, short, broad lobe and the median area of ventrites 3–5 covered with longer, dens and erect setae. Besides M. ventralis Lea, 1899, also M. cardiopterus Lea, 1913 and M. parvidens Lea, 1899 appear to belong in it. Definite host records are only known for M. ventralis .