Aufidus alacaligus Le Cesne & Soulier-Perkins sp. nov.

(Figs 1–7)

Type material. Male holotype: Papua New Guinea, Madang province, Wanang 180m, S5°13’40” E145°04’47”, Museum Paris, PL, 13-XI-2012, A. Soulier-Perkins rec., MNHN (EH) 24056 .

Paratypes: 3 females, Papua New Guinea, Madang province, Wanang 180m, S5°13’40” E145°04’47”, Museum Paris, PL, 13-XI-2012, A. Soulier-Perkins rec., MNHN (EH) 24062; Papua New Guinea, Madang province, Wanang 180m, S5°13’40” E145°04’47”, Museum Paris, PL, 22-XI-2012, A. Soulier-Perkins rec., MNHN (EH) 24063; Papua New Guinea, Madang province, Wanang 180m, S5°13’40” E145°04’47”, Museum Paris, PL camp, 24-XI-2012, A. Soulier-Perkins rec., MNHN (EH) 24064 .

Distribution. Wanang, Madang province, Papua New Guinea

Diagnosis. Head and pronotum uniformly ochre and tegmina with apical part brownish.Aedeagus shape unique, curving dorsally with a tip diamond-shaped.

Description. Total length of male holotype 10.1 mm (incl. tegmina), female paratypes between 10.2 and 10.7 mm.

Head in dorsal view, 1.8 times wider between eyes than long in midline. Rostrum short, reaching procoxa. Postclypeus, in lateral view, regularly convex and not making any angle, in frontal view with a longitudinal gutter in middle. Distance between eye and ocellus 7.5 times greater than between ocelli. Pronotum convex, 1.9 times wider than long in midline. Scutellum possesses a median dimple. Tegmen length 6.7 mm and 4 times longer than wide.

Protibia with a pit on inferior half on external side.

Male terminalia. Pygofer with dorsal margin straight, posterior margin curved like a wave with a hump in middle. Subgenital plate extremely long, 2 times as long as pygofer height, partially flexible at 3/5 of its length, apical 2/5 slimmer and apex not sharp (Fig. 7). Parameres with dorsal and ventral margins almost parallel and finishing apically into an axe shaped apex, presence of a series of long setae along apical margin. Intermediate plate present and shaped like tweezers apically (Fig. 5). Aedeagus bearing a small hump at base of dorsal margin, apex pointing dorso-anteriorly and diamond shaped, ventral margin curving strongly twice with each curve followed by a section almost straight (Fig. 6).

Colour. General colour ochre (Figs 1–3), in dorsal view, head ochre with ocelli underlined with brown, prothorax ochre with posterior margin darker. Dark spot on frontoclypeal margin. In frontal view, pedicels and antennal bulbs black, antennae yellow, rostrum yellowish-ochre with black apex. Anal margin of tegmen darker underlining scutellum. Legs generally yellow ochre except for tarsal segments and external side of prototibiae that are black. Metatibia with tip of midtibial spine black. Tegmen partially transparent with apical cells darker, veins ochre. Hindwing transparent with dark veins.

Etymology. The specimens have smoked tegmina. In Latin “ ala ” means wing and “ caligo ” smoke. The concatenation of these two words was chosen for the name of the species, alacaligus .