Silba mbuti, 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 : 523-525

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.6110141
persistent identifier	https://treatment.plazi.org/id/C45087F5-D605-4D48-F9CD-640636B8FEEB
treatment provided by	Plazi
scientific name	Silba mbuti
status	sp. nov.

Treatment

Silba mbuti View in CoL 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, longer setulae present anteriorly above lunule. Orbital plates shining black. Lunule with dull orange ground colour, covered in silver pollinosity as to a lesser extent are parafacials and face. Anterior genal setulae in a single row of 6 along mouth margin, these slightly separated from and slightly stronger than the other setulae. Antennae; 1st flagellomere black apart from an obscure brownish area at extreme medial base, length to depth ratio 3.2:1. Arista long plumose, ratio of plumosity at maximum extent to depth of 1st flagellomere 1.4:1.

Thorax: mesonotum subshining blue black. Anepisternum 3 anterodorsal and 3 posterior setae. Katepisternum with 2 setae near the dorsal margin, the posterior longer and stronger than the anterior. Proepimeron and proepisternum each with 1 seta. Scutellum with disc almost as subshining blue black as the thoracic disc, on margin between lateral and apical setae with two setulae on each side, none between apical setae. Calypteres and fringes slightly yellowish white. Wings clear, wing length 3.7mm. Legs entirely black, basal tarsomeres yellow/brown, apical segments darkened.

Male terminalia (Figs. 17–18): epandrium and associated structures of the standard S. admirabilis group type. Phallus: basal plate, in ventral view kite-shaped, widening steadily for basal two thirds, then narrowing to apex, apical incision a rather deep U-shape. In lateral view basiphallus rather broad, bearing spicules, basal plate as long as phallus.

Type material. Holotype ♂. DEMOCRATIC REPUBLIC OF CONGO; P.N.G. (Park Nationale Garamba ), 19.v.1952, Miss. H. de Saeger.

Only known from the holotype, specimen in MRAC.

Etymology. The specific epithet refers to the Mbuti people of the Congo.