Silba bredoi
Description. Male: Head: Eyes bare. Frons 0.5x width of an eye, subshining black with fine microsculpture,
frontal and interfrontal setulae approximately 0.3x as long as the orbital setae. Lunule with ground colour dark,
intensely silver pollinose as to a lesser extent are the parafacials and face. Antennae; entirely black with just a faint
hint of orange at extreme medial base 1st flagellomere length to depth ratio 3.6:1. Arista with plumosity at
maximum extent approximately depth of 1st flagellomere. Anterior genal setulae in a single row of 5 along mouth
margin, these slightly separated from the other setulae on the genae
Thorax: Mesonotum and pleura shining black, all setae missing. Scutellum, disc with traces of silver dusting,
all lateral setae and setulae missing. Calypteres white with long whitish fringes. Legs black, basal tarsomeres
yellow, other tarsomeres becoming darker apically. Wings clear, wing length 3.5mm.
Male terminalia (Figs. 7–8): epandrium and associated structures of the standard S. admirabilis group type.
Phallus: basal plate, in ventral view very long and narrow, almost parallel sided, slightly widening at apex where
there is a slight semi-circular excavation. In lateral view basal plate extending almost as far as the phallus, apex
slightly expanded. Basiphallus of normal size, bearing a few spicules ventrally.