(Popofsky, 1904)
Main spicules of equal length, 4-winged in cross section (wings narrow), distally expanded, tips sharp. Eighteen secondary spicules shorter and thinner, tips pointed. Twenty myonemes per spicule. Central capsule light-colored. Length of main spicules: 0.7-1.33 mm, width: 0.008 mm; length of secondary: 0.2-0.35 mm, width: 0.002-0.003 mm.