Herina dimorphica

Morgulis, E., Freidberg, A. & Kameneva, E. P., 2013, Two new species of Herina (Diptera: Ulidiidae) from the Mediterranean region, with key to species groups, Zootaxa 3686 (4), pp. 461-470 : 464

Herina dimorphica species group

Diagnosis. This group of species can be destinguished from other Herina species groups by the combination of the following characters: small size (body length 2.2–4.0 mm); first flagellomere short, pointed dorsoapically; wing pattern unique, varies from almost evenly infuscated to dimidiate, rather than consisting of transverse dots or stripes as in all other Herina groups; medial surstylus inconspicuous; lateral surstylus mesally curved or almost straight, with 2–3 prensisetae; spermatheca short oval. Genital characters similar to those of members of the oscillans group, but members of the dimorphica group clearly differ from the members of the oscillans group by the more densely microtrichose thorax and abdomen, as well as by the wing pattern.