Fulgenta complexa, Macgowan, Iain, 2017

Macgowan, Iain, 2017, A new genus and species within the tribe Earomyiini (Diptera, Lonchaeidae), Zootaxa 4216 (3), pp. 201-224 : 209

Fulgenta complexa sp. nov.

( Figs. 14–18 )

Description. Male: Head: Eyes bare. Frons matt black, frontal and interfrontal setulae very short. Orbital plate shining, bare apart from orbital seta. Lunule with ground colour brown, covered by silver pollinosity, parafacials slightly silver pollinose, Face subshining black. Anterior genal setulae forming a single row of 6–8 along mouth margin. Antennae black, 1st flagellomere length to depth ratio 2:1. Arista short plumose, ratio of plumosity at maximum extent to depth of 1st flagellomere 0.9:1.

Thorax: mesonotum shining dark green, anepisternum and katepisternum shining black with only faint green reflections. Anepisternum with 1 strong anterodorsal seta and 2 posterior setae. Katepisternum with 1 dorsal seta, a few setulae anterior to it but otherwise sclerite bare. 1 seta on both proepimeron and proepisternum. Scutellum, shining as mesonotum, on margin with 1 short setula between lateral and apical setae, 1 between apical setae. Calypteres pale with whitish fringes. Wing membrane slightly yellowish, wing length 3.0mm. Legs black, all basal and second tarsomeres pale yellow, apical tarsomeres darkened.

Male terminalia: Epandrium; in lateral view 9th and 10th terga not completely fused, 9th terga a rectangular lobe attached to anterior surface of, and approximately half as wide as, 10th terga. 10th terga 4x as wide as high; cerci elongated laminate structures, lying posterior to epandrium. In posterior view cerci separate, bi-lobate apically, medial lobe shorter than outer, entirely covered with fine setulae apart from outer lobe, apical margin with a wellspaced row of longer setulae. Surstyli enclosed within shell of epandrium, a small setulose lobe with longer setulae along apical margin. Phallus; basiphallus cuboidal, a pair of small emarginated processes posteriorly, centrally on medial surface with a square blade-like process emarginated on outer margin Distiphallus a straight tube, at point where it joins basiphallus with a small, simple process on each side

Type material. Holotype ♂. CAMEROON; Rt. N 9, 20 Km. E. of Sangmélima , 7.xi.1987, A. Freidberg, ( TAUI).

Only known from the Holotype.

Differential diagnosis. This species is distinguished by its rather small cerci which have deeply incised apices; the phallus has a cuboidal basal section bearing several small serrated lobes. The surstyli are also more developed than usual being represented by a small setulose lobe.

Etymology. The specific epithet refers to the complex phallus.

Figures

FIGURES 14 – 18. Fulgenta complexa sp. nov. 14. Epandrium and associated structures, posterior view. 15. Same, lateral view. 16. Epandrium, internal view showing surstylus and associated structures. 17. Phallus, lateral view. 18. Same, ventral view.