Arpactophilus jawe sp. nov.

(Figs. 65–66)

Diagnosis. Arpactophilus jawe is the only New Caledonian species in the genus with the combination of two submarginal cells in the forewing, a partially yellow clypeus (Fig. 65), a black frons, a dorsally-interrupted occipital carina, black coxae with yellow only apically, and yellow femora with some light brown basally.

Description. FEMALE: Total length 4.2–4.7 mm, mean = 4.4 mm; forewing length 2.3–2.6 mm, mean = 2.5 mm.

Body black, with yellow markings. Yellow: apical half of clypeus (Fig. 65); mandible; front of scape; legs, except coxae basally, femora partially dark yellow or light brown basally. Flagellum and pedicel dark yellow. Posterior of scape brown. Wings hyaline; pterostigma light brown. Labrum not visible.

Head about 1.1 × as long as wide in frontal view. Apical margin of clypeus medially projecting, with shallow, broad concave incision (Fig. 65). Apical margin of labrum projecting, with shallow V-shaped incision (barely visible). Ventral mandibular tooth about ¼–1/5 of total mandibular length, not reaching the opposite mandibular base. Palpal formula probably 4:3 (not completely visible). Frons colliculate with dense punctation and short silvery setae. Frontal carina present from median ocellus to midlength of clypeus, elevated to prominent point at basal clypeal margin. Scape 3.6 × as long as wide. Median ocellus anterior of tangent between upper posterior orbits of compound eyes, lateral ocelli on tangent. Occipital carina interrupted dorsally (Fig. 6). Gena imbricate with dense punctation and associated setae, without tubercles, spines, or dorsoventral carina. Hypostomal midventral line carinate, not angulate.

Mesosoma about 1.5 × as long as wide in dorsal view. Propodeum about 0.7 × as long as wide in dorsal view. Mesosoma imbricate with dense punctation (Fig. 66), except on propodeum; lateral surface of propodeum transversely carinulate; dorsal surface of propodeum coarsely reticulate in a pattern of transverse carinae posteriorly (similar to pattern in Fig. 20). Pitted sulcus present posterior to mesoscuto-mesoscutellar sulcus. Hypersternal sulcus long, close to omaulus pitted. Metafemur 3.1 × as long as wide. Metatibia without differently colored area apically. Pretarsal claws without teeth. Forewing with two submarginal cells; anterior border of submarginal cell II slightly shorter than posterior border. Hind wing with five distal hamuli.

Metasoma polished, with sparse punctation (Fig. 66). Metasomal sternum II without bulge (as in Fig. 1). Pygidium with broad row of silk setae apically.

MALE: Unknown.

Remarks. Arpactophilus jawe is most similar to A. pije, A. bwatoo and A. yuanga in body size and coloration, but has a yellow and light brown metafemur without dark brown or black markings (Fig. 66). It also differs from A. bwatoo in the structure of the frons, which is longitudinally colliculate in A. bwatoo (Fig. 33) and punctate in A. jawe (Fig. 65). The species can also be distinguished from A. yuanga (Fig. 111) by the lack of yellow markings on the frons of A. jawe (Fig. 65).

Material examined. HOLOTYPE ♀: “Nouvelle Calédonie, Pinda 30m, 19.IV.1995, Réc. Chazeau & Jourdan [MNHN].

PARATYPES 3♀: (1x) “Nouvelle Calédonie, Pinda 30m, 18.IV.1995, Réc. Chazeau & Jourdan [MNHN]; (2x) “Nouvelle Calédonie, Pinda 30m, 19.IV.1995, Réc. Chazeau & Jourdan [CAS, ZMB].

Etymology. The specific epithet is taken from the name Jawe, one of the New Caledonian native languages. It is treated as a noun in apposition.