Arpactophilus fagauvea Breitkreuz, Ohl & Engel, 2016, sp. nov.
Creators: name: Breitkreuz, Laura C. V.
name: Ohl, Michael
name: Engel, Michael S.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Crabronidae
Arpactophilus
Arpactophilus fagauvea

description: Arpactophilus fagauvea sp. nov.
(Figs. 51–52)
Diagnosis. Arpactophilus fagauvea is the only New Caledonian species in the genus with the combination of a longitudinally wrinkled frons (Fig. 51), two submarginal cells in the forewing, a reddish-brown metasoma and no bulge on sternum II (Fig. 52, and as in Fig. 1). Another distinctive feature is the medially strongly projecting apical margin of the clypeus with a medioapically straight margin (Fig. 51).
Description. FEMALE: Total length 4.4–4.5 mm, mean = 4.4 mm; forewing length 2.4–2.5 mm, mean = 2.4 mm.
Body black and reddish-brown, with areas of yellow and brown. Yellow: mandible laterally at base; palpi; scape; pedicel; tegula; trochanters; femora apically; tibiae, except weakly-defined apical area on metatibia; tarsi. Brown: most of mandible; flagellum; anterior pronotal margin; pronotal lobe; coxae; most of femora; weaklydefined apical area on metatibia. Metasoma reddish-brown (Fig. 52). Wings hyaline; pterostigma light brown.
Head about 1.3 × as long as wide in frontal view. Apical margin of clypeus strongly projecting medially, medioapical margin straight (not incised as is common in other species) (Fig. 51). Apical margin of labrum medially projecting. Ventral mandibular tooth about ¼–1/5 of total mandibular length, not reaching opposite mandibular base. Palpal formula 4:3. Frons imbricate, also longitudinally costate, with short setae. Frontal carina present from median ocellus to midlength of clypeus, forming small point at basal clypeal margin. Scape 4 × 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 sparse punctation and associated setae, without tubercles, spines, or dorsoventral carina. Hypostomal midventral line carinate, not angulate.
Mesosoma about 1.8 × as long as wide in dorsal view. Propodeum about 0.8 × as long as wide in dorsal view. Mesosoma imbricate (Fig. 52), except propodeum; lateral surface of propodeum transversely carinulate; dorsal surface of propodeum reticulate with transverse longitudinal carinae (similar to pattern in Fig. 20). Slightly pitted sulcus present posterior to fine mesoscuto-mesoscutellar sulcus. Hypersternal sulcus absent. Metafemur 2.4 × as long as wide. Metatibia with a weakly-defined, light brown colored apical area. Pretarsal claws without teeth. Forewing with two submarginal cells; anterior border of submarginal cell II much shorter than posterior border, almost triangular in shape. Hind wing with five distal hamuli.
Metasoma polished, punctation on basal segments sparse, on apical segments denser (Fig. 52). Metasomal sternum II without bulge (as in Fig. 1). Pygidium with broad row of silk setae.
MALE: Difference from female aside from genitalic structures: mandible yellow; metatibia without differently colored area apically. Metasomal sternum VIII narrow.
Remarks. Arpactophilus fagauvea can be distinguished from all other species with a reddish metasoma by its longitudinally costate frons. Arpactophilus futuna is similar in body size and coloration, but differs in the sculpture of the frons and can also easily be separated by the thin, acutely rounded genal spine (Fig. 13), which is not present in A. fagauvea.
Material examined. HOLOTYPE ♀: “Nouvelle Calédonie, Pinda 30m, 18.IV.1995, Réc. Chazeau & Jourdan [MNHN].
PARATYPES 2♀, 1♂:
♀: (1x) “Nouvelle Calédonie, Pinda 30m, 18.IV.1995, Réc. Chazeau & Jourdan [CAS]; (1x) “ NEW CALEDONIA Anse Vata, 23.X.1958; C. R. Joyce Collector” [BPBM].
♂: “Nouvelle Calédonie, Pindaï 30m, 18.IV.1995, Réc. Chazeau & Jourdan” [MNHN].
Etymology. The specific epithet is taken from the name Fagauvea, one of the New Caledonian native languages. It is treated as a noun in apposition.
description: Published as part of Breitkreuz, Laura C. V., Ohl, Michael & Engel, Michael S., 2016, A review of the New Caledonian Arpactophilus (Hymenoptera: Crabronidae), pp. 1-66 in Zootaxa 4063 (1) on page 23, DOI: 10.11646/zootaxa.4063.1.1, http://zenodo.org/record/270412