Silba inimvua, Macgowan, Iain, 2015

Macgowan, Iain, 2015, A review of the Silba admirabilis McAlpine species group (Diptera: Lonchaeidae) with descriptions of thirteen new species from the Afrotropical region, Zootaxa 4032 (5), pp. 515-534 : 522-523

publication ID	https://doi.org/ 10.11646/zootaxa.4032.5.3
publication LSID	lsid:zoobank.org:pub:48AAF41A-27F9-48E0-9E01-CB588FDA5DBB
DOI	https://doi.org/10.5281/zenodo.6110137
persistent identifier	https://treatment.plazi.org/id/C45087F5-D60A-4D4A-F9CD-64603116FE72
treatment provided by	Plazi
scientific name	Silba inimvua
status	sp. nov.

Treatment

Silba inimvua View in CoL sp. nov.

Description. Male: Head: Eyes bare. Frons 0.6x the 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 6 along mouth margin, these slightly separated from the other setulae. Antennae; 1st flagellomere black, brownish orange colouration at the base of the medial surface more extensive than in the other species described here, length to depth ratio 2.8:1. Arista plumose, ratio of plumosity at maximum extent to depth of 1st flagellomere 1.1:1.

Thorax; mesonotum subshining blue black. Anepisternum with 2 anterior and 2 posterior setae. Katepisternum with 2 setae near the dorsal margin, posterior longer and stronger than anterior. Proepimeron and proepisternum each with 1 seta. Scutellum with disc heavily grey dusted, on margin between lateral and apical setae with two setulae on each side, none between apical setae. Calypteres and fringes pale golden. Wings clear, wing length 3.5mm. Legs entirely black, basal tarsomeres yellow/brown, apical segments darkened.

Male terminalia (Figs. 13–14): epandrium and associated structures of the standard S. admirabilis group type. Phallus: Basal plate a thin transparent structure, in ventral view only slightly widening towards apex where there is a v-shaped excavation. In lateral view basal plate, shorter than phallus, apex blade-like. Basiphallus swollen laterally, bearing a few spicules ventrally.

Type material. Holotype ♂. DEMOCRATIC REPUBLIC OF CONGO; P.N.G. (Park Nationale Garamba ), Inimvua , 20.v.1952, Miss. H. de Saeger.

Paratypes. All from the Park Nationale Garamba : Akam, 19.v.1950, 1♂; 21.viii.1951, 1♂; 31.viii.1951, 1♂; 3.x.1951, 1♂; 8.xi.1951, 1♂. Dedegwa, 17.v.1952, 1♂. Inimvua , 20.v.1952, 1♂; 10.ix.1952, 1♂. Mabanga, 23.ix.1952, 1♂. Mt. Moyo, 25.ix.1952, 1♂.

Specimens in MRAC.

Etymology. The specific epithet is derived from the capture site of the Holotype.