Fulgenta longiphallus, Macgowan, Iain, 2017

Macgowan, Iain, 2017, A new genus and species within the tribe Earomyiini (Diptera, Lonchaeidae), Zootaxa 4216 (3), pp. 201-224 : 214-215

Fulgenta longiphallus sp. nov.

( Figs. 35–38 )

Description. Male: Head: Eyes bare, frons sooty black, dulled by microsculpture. Frontal and interfrontal setulae very short. Lunule with ground colour orange-brown, slight silver pollinosity on lunule, face and parafacials. Antennae black, 1st flagellomere black, length to depth ratio 1.8:1. Arista; ratio of plumosity at maximum extent to depth of 1st flagellomere 0.6:1.

Thorax: mesonotum shining dark green, pleurae shining black-green. Anepisternum with 1 anterodorsal setae, 2 posterior. Katepisternum with 1 strong setae. Scutellum shining dark green as mesonotum, margin on each side with 1 short setulae between lateral and apical setae, 0 between apical setae. Calypteres pale with whitish fringes Wing slightly fumose with yellow veins, wing length 2.5mm. Legs black, basal and second tarsomeres yellow, apical segments slightly darkened.

Male terminalia: Epandrium; in lateral view 9th and 10th terga not completely fused, 9th terga a triangular lobe attached to anterior surface of, and approximately half as wide as 10th terga. 10th terga approximately 3x as wide as high, anterior margin narrowing towards ventral margin. Cerci a pair of elongated laminate structures, lying posterior to epandrium. In posterior view the cerci form large, laminate processes, each approximately 4x as long as wide, parallel sided throughout their length with a broad rounded apex. Posterior surface covered with fine setulae. Surstyli; enclosed within the shell of the epandrium, a small structure at apex of a sinuous tendon attaching basally to cerci, almost circular in shape with a setulose apical margin. Phallus, an inverted J-shape with a long, straight apical section terminating in a slightly flared apex.

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

Only known from the Holotype.

Differential diagnosis. A species with large, relatively simple cerci and slightly developed surstyli The very simple J-shaped phallus is unique amongst the known species of Fulgenta .

Etymology. the specific epithet refers to the long phallus.

Figures

FIGURES 35 – 38. Fulgenta longiphallus sp. nov. 35. Epandrium and associated structures posterior view. 36. Same, lateral view. 37. Epandrium, internal view, showing surstylus and associated structures. 38. Phallus, lateral view.