A review of the Silba admirabilis McAlpine species group (Diptera: Lonchaeidae) with descriptions of thirteen new species from the Afrotropical region Author Macgowan, Iain text Zootaxa 2015 4032 5 515 534 journal article 10.11646/zootaxa.4032.5.3 e028ebd3-b0ef-4416-b79b-e46bef00088a 1175-5326 232754 48AAF41A-27F9-48E0-9E01-CB588FDA5DBB Silba hambai sp. nov. Description. Male: Head: Eyes bare. Frons 0.5x width of an eye, subshining black, dulled by microsculpture, frontal and interfrontal setulae less than 0.25x length of orbital seta. Orbital plates shining black. Lunule with brownish ground colour, covered in silver pollinosity as to a lesser extent are the parafacials and face. Anterior genal setulae in a single row of 5–6 along mouth margin, these slightly separated from the other setulae. Antennae; 1st flagellomere black apart from an obscure brownish area at extreme medial base, length to depth ratio 3:1. Arista plumose, ratio of plumosity at maximum extent to depth of 1st flagellomere 1:1 Thorax: mesonotum subshining blue black. Anepisternum with all setae either broken or obscured by the mounting pin and glue. Katepisternum with 2 setae near the dorsal margin, the posterior longer and stronger than anterior. Proepimeron and proepisternum each with 1 seta. Scutellum with disc almost as subshining blue black as the mesonotum, on margin between lateral and apical setae with 2 setulae on each side, none between apical setae. Calypteres white with white fringes. Wings clear, wing length 3.2mm . Legs entirely black, basal tarsomeres yellow/brown, apical segments darkened. Male terminalia ( Figs. 11–12 ): epandrium and associated structures of the standard S. admirabilis group type . Phallus: Basal plate, in ventral view widening steadily from base, at apex forming two processes separated by a wide V shaped incision. In lateral view apices expanded and laterally flattened, resembling paddles. Apex of phallus broken off, basiphallus significantly swollen, bearing spicules on inner surfaces. Type material. Holotype ♂. DEMOCRATIC REPUBLIC OF CONGO ; P.N.G. (Park Nationale Garamba ), II/gd/9, 8.xi.1951 . Miss. H. de Saeger. Only known from the holotype , specimen in MRAC . Etymology. The specific epithet refers to the Hamba people of the Congo .