Fulgenta setiphallus, Macgowan, Iain, 2017

Macgowan, Iain, 2017, A new genus and species within the tribe Earomyiini (Diptera, Lonchaeidae), Zootaxa 4216 (3), pp. 201-224 : 221-223

Fulgenta setiphallus sp. nov.

( Figs. 57–60 )

Description. Male: Head: Eyes bare. Frons subshining black, covered in fine microsculpture. Frontal and interfrontal setulae very short. Orbital plate shining black, bare apart from orbital seta. Lunule with dark brown ground colour covered in intense silver pollinosity. Face and parafacials with thin covering of silver pollinosity. Anterior genal setulae in a single row of 4 along mouth margin. Antennae black, 1st flagellomere slightly orangebrown on medial base, this colouration extending slightly along ventral surface, length to depth ratio 1.7:1. Arista short plumose; ratio of plumosity at maximum extent to depth of 1st flagellomere 0.4:1.

Thorax: mesonotum blue-black anteriorly but dark shining green posteriorly, anepisternum and katepisternum shining blue-black. Anepisternum with 1 anterodorsal seta and 2 posterior setae. Katepisternum with 1 seta and only some 4 other short setulae anterior to it. Scutellar disc shining dark green, on margin between lateral and apical setae with 1 setulae, 0 between apical setae. Calypteres pale with whitish fringes. Wing slightly fumose anteriorly, wing length 2.8 mm. Legs black, basal and second tarsomeres pale, apical segments slightly darkened.

Male terminalia: Epandrium; in lateral view 9th and 10th terga not completely fused, 9th terga triangular in shape attached to anterior surface of 10th terga in a central position, approximately one third as wide as 10th terga. 10th terga approximately 4x as wide as high, Cerci almost entirely fused, broad laminate structures, lying posterior to and extending slightly beyond epandrium. In posterior view widening steadily for basal two thirds then curving gently inwards to apex where there is a small slightly hooked process at medial apex. Fused along almost entire length apart from a small invagination at apex, laterally covered in fine setulae. Surstyli rudimentary, enclosed within shell of epandrium and attached basally by a tendon to e cerci, Circular in shape, bearing numerous long setulae apically. Medial lobe of epandrium well developed and bearing numerous spicules. Phallus; inverted Jshape, basally rather thickened and bearing a scattering of setulae, apically relatively narrow and sinuous with a small lateral projection.

Type material. Holotype ♂. DEMOCRATIC REPUBLIC of CONGO; Yafira forest transect, Malaise trap, primary lowland evergreen forest, 29–31.v.2010 , A. Kirk-Spriggs, ( NMBO).

Only known from the Holotype.

Differential diagnosis. A species with very broad, fused cerci, moderately well-developed surstyli and a spiculate medial lobe of the epandrium. The phallus is complex but without any sharp angled bends or medial processes.

Etymology. The specific epithet refers to the numerous setulae on the base of the phallus.

Figures

FIGURES 57 – 60. Fulgenta setiphallus sp. nov. 57. Epandrium and associated structures, posterior view. 58. Same, lateral view. 59. Epandrium, internal view, showing surstylus and associated structures. 60. Phallus, lateral view.