Two new species of Herina (Diptera: Ulidiidae) from the Mediterranean region, with key to species groups Author Morgulis, E. Author Freidberg, A. Author Kameneva, E. P. text Zootaxa 2013 3686 4 461 470 journal article 10.11646/zootaxa.3686.4.4 52656834-c4b5-488c-8e39-87fa4390abcd 1175-5326 224057 08EBEA80-2896-43A6-B0A0-AF7B0AC0153B 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.