Lonchaea melanesia  

Description. Male: Head. Eyes bare. Frons black, slightly dulled by microsculpture, frontal and interfrontal
setulae very short, at most 0.20 length of orbital seta, longer setulae present on anterior margin. Orbital plate
shining, bare apart from orbital seta. Lunule, ground colour brown, intensely dusted silver, all of face and
parafacials more lightly silver dusted. Antennae entirely black, 1st flagellomere slightly narrowing apically, 2.5x as
long as deep. Arista with plumosity at maximum equalling depth of 1st flagellomere. Anterior genal setulae in
single row of 6–7 along mouth edge, second basal almost twice as long and strong as the others.
Thorax: Dorsum and sclerites subshining black, dorsum covered in short setulae, Anepisternum with two
posterior and two anterodorsal setae. Katepisternum with one strong dorsocentral seta. Scutellum with dorsum
slightly dulled by dust, on margin between lateral and apical setae with four very short setulae, none between apical
setae. Calypteres pale, with a uniform pale fringe. Wings with a uniform fumose tint, veins brownish, wing length
4,0mm. legs as in L. fiji.
Male terminalia: (Figs. 18–20). Epandrium in lateral view slightly wider than high, narrowing significantly
dorsally, with a rounded posterior ventral process covered in setulae. Cerci relatively large with a rounded apex
bearing a fringe of long setulae. Inner surface of surstyli partially divided into two lobes each with an obvious
posterior projection, outer lobe with a row of setulae along outer margin, these becoming longer, stronger and more
numerous anteriorly where they extend out beyond the margin of the epandrium, posterior projection bare. Inner
lobe bare on surface but posterior projection with a group of approx 5 strong setulae situated both on margin and on
surface. Phallus in lateral view with a relatively stout basal section and a small shield-shaped apical section.