Herina merzi is a species of picture-winged fly known only from Merishausen in the canton of Schaffhausen, Switzerland.

[2] It is a mostly dark-coloured insect with shining-black abdomen and brownish-black thorax and legs.

[1] This insect, first found in 2001, surprisingly, appears to be more closely related to congeners from the Indomalayan realm rather than other European species.

The location of the type locality, far from airports and major cities, suggests accidental introduction is unlikely.

This article related to members of the fly family Ulidiidae is a stub.