Pseudohermonassa tenuicula Morrison 1874

There is a single annual brood, with adults on the wing in July and early August, peaking in mid July.

Primarily an eastern species, ranging west the eastern border of BC, north to the NWT and James Bay, south in the east to OH and MD, and in the west south in the mountains to CO. In Alberta collected mainly in the Aspen parklands, foothills and mountains.

A medium-size moth (approx. 3.5 - 3.7 cm wingspan) with dull black forewings with a straight narrow pale yellow antemedian and curved postmedian lines. The small oblong orbicular spot and larger reniform spot are partially outlined with a fine line of light yellow scales. The cell before and between the two spots is jet black. Hindwings dirty white with a yellow tint, suffused with grey scales and with a dark discal mark and narrow black terminal line. Sexes similar, but male antennae setose, female simple. Smaller than P. bicarneaa and black, not dark brown, without the pale pink or yellow patches of scales in the basal area and on the costa beyond the reniform. Adults and the genitalia of both sexes are illustrated by Lafontaine (1998).

Found in open wooded areas, meadows and edges.

Adults are nocturnal and come to light. The larva is described by Lafontaine (1998), and is illustrated by McCabe (1991).

The natural hostplants are unknown, but it has been reared in the laboratory on the grass Glyceria maxima (Hartm.) Holmb.

Pseudohermonassa tenuicula, known generally as the Morrison's sooty dart or hair-pin dart, is a species of cutworm or dart moth in the family Noctuidae. It is found in North America.

The MONA or Hodges number for Pseudohermonassa tenuicula is 10951.

Pseudohermonassa tenuicula là một loài bướm đêm trong họ Noctuidae.