Silba ischnopoda
Description. Male: Head: Eyes bare. Frons subshining black, ratio of width to width of an eye 1:2.1, covered in light grey pollinosity. Frontal and interfrontal setulae extremely short, a few longer ones present on anterior margin above the lunule. Orbital plate shining black, bare apart from the orbital seta. Antennae; pedicel brownish-orange medially, 1st flagellomere broadly orange on medial base, this colouration extending along the ventral margin, length to depth ratio 2.6:1. Arista short plumose, ratio of width of plumosity at maximum extent to depth of 1st flagellomere 0.47:1. Lunule setulose, ground colour black, covered with intense silver pollinosity. Face and parafacials lightly silver pollinose. Anterior genal setulae in a single row of 5-6 along the mouth margin, the basal of these the strongest setulae on the genae.
Thorax; scutum and sclerites sub-shining black, lightly covered with grey pollinosity. Scutum covered with short setulae approximately 0.25x length of orbital setae. Anepisternum with a vertical row of 3 anterior setae, 3 strong posterior setae, a single weaker seta lying ventral to these, between these rows a covering of setulae no more than 0.5x length of the setae. Katepisternum with one strong seta, a few short setulae anteriorly. Proepisternum with a 1 long seta 2x as long as the seta on the proepimeron. Scutellum; disc slightly brassy in colour, contrasting with the blue-black of the thoracic scutum. Margin, between lateral and apical setae, with 3 short setulae on each side, two setulae between apical setae. Calypteres white with a white fringe. Wings clear, veins slightly yellowish, wing length 3.1mm.
Male terminalia: In lateral view epandrium as wide as high, with a scattering of long, strong setae ventrally. Cerci relatively large and rather rectangular, densely setulose on ventral margin, less so over remainder. Surstylus projecting beyond shell of epandrium as a small rounded posteroventral process. Inner surface of surstylus with a posterior-anterior row of 6 small, black prensisetae, anterior to these and in the same orientation, two small spicules. One strong setae present at the base of the cerci. The area between the row of prensisetae and the ventral margin densely covered in fine setulae. 5 parallel dorsoventral creases on the surface of the surstylus dorsal to the row of prensisetae. Pregonites setulose for most of their length, postgonites rather square shaped with an apical seta. Phallus; U-shaped, basally rather broad, apically a fine slightly curved tube. A pair of lateral, ventrally directed processes arising from the basal section, the apices of these developed into numerous spike-like processes.
Female: In most aspects as in male; frons; ratio of width to width of an eye 1:1.5. Aculeus with apical segment diamond-shaped, numerous short ventral setulae apically.
Reared from syconia of Ficus ischnopoda Miquel,1867.