Systematics of the parasitoid wasp genus Aulacus Jurine (Hymenoptera: Evanioidea: Aulacidae) from Australia Author Jennings, John T. Author Parslow, Ben A. Author Austin, Andrew D. text Zootaxa 2018 2018-12-21 4538 1 1 113 journal article 22561 10.11646/zootaxa.4538.1.1 381202fb-343a-4c47-b17f-e3ad6df1b0fd 1175-5326 3771367 E4D8D897-3CBE-4FA6-95C3-143A945229A4 Aulacus nebo Jennings & Austin , sp. nov. Figs 35 , 63 . Material examined. Holotype . ♀ , " Mt. Nebo , Qld. 500m . Australia . March 20." ( ANIC ) Description. FEMALE. Length . 6.5 mm , excluding ovipositor. Colour. Orange-brown, except for flagellomeres 1–4 and basal half of flagellomere 5 black, apical half of flagellomere 5 and flagellomeres 6–10 white ( Figs 35A, B ). Wings hyaline except for a distinct brown spot apically on the marginal and submarginal cells of fore wing ( Figs 35A, B ). Head . 1.55× wider than long when viewed dorsally; face rugose-reticulate pubescence long; indistinct subantennal groove; frons without lateral medial carina above toruli, rugose-reticulate, with long pubescence; vertex punctate-reticulate near ocelli to rugose-reticulate and with scattered punctures posteriorly, with scattered short setae; gena rugose-reticulate with scattered punctures tending to punctate-reticulate near malar space, with scattered short setae; posterior margin of head slightly concave in dorsal view; occipital carina absent; malar space 0.25× height eye; clypeus 5.0× as wide as high, margin sinuate, with medial process; distance from lateral ocellus to eye margin 0.55× distance between lateral ocelli; scape 1.7× length pedicel; first flagellomere equal to length scape, 0.52× as long as second flagellomere. Mesosoma. Propleuron reticulate, pubescence long, ventro-lateral carina present; pronotum rugose; mesoscutum in lateral view angular antero-dorsally, medial and lateral lobes strigate, with scattered short setae, admedial lines present; notauli distinct, carinate, narrow and shallow; scutellum and axillae strigate, scutellum anteriorly with pair of deep depressions, separated by a weak median carina; metapostnotum areolate, posterior margin convex; mesopleuron rugose, with long pubescence; mesepimeron broad, carinate; metapleuron rugose dorsally to areolate ventrally, with long pubescence; propodeum areolate, posterior margin smooth; hind coxa strigate dorsally, pubescence long laterally, ovipositor guide somewhat distal, oblique ( Fig. 35D ), distal fringe long, denser ventrally, no setae in groove; hind trochanter imbricate, with scattered short setae; prefemur on hind leg present; hind femur imbricate, with scattered short setae; hind tibia imbricate, pubescence short, with scattered stout emergent setae; hind femur 0.76× length hind tibia; hind tibia with ventro-apical pecten of short robust spines; hind tarsomeres 1–4 with ventro-apical pecten of short robust spines, tarsomere 1, 3.1× length tarsomere 2; tarsomere 2, 1.5× length tarsomere 3; tarsomere 3, 2.2× length tarsomere 4; tarsomere 4, 0.55× length tarsomere 5; hind tarsal claw 0.33× length tarsomere 5; fore wing veins 2r-m and 3r-m largely spectral; hind wing venation complete, M+Cu, Cu, r-m and 2-M spectral, with 3 hamuli. Metasoma. Ovate, 1.24× length of mesosoma ( Fig. 35B ); T1 and T2 broad, glabrous; ovipositor 3.7 mm . MALE. Unknown. Etymology. This species is named after the type locality, Mt. Nebo, Queensland . Distribution. This species is known only from the type locality, Mt. Nebo, about 30 km west northwest of Brisbane, Queensland ( Fig. 63 ). Biology. Nothing is known of the biology of this species. Comments. Aulacus nebo keys out with A. williamsi . Both species have the mesosoma angular in lateral view, ovate metasoma, apical spot on apex of fore wing, complete hind wing venation, and a distal, oblique ovipositor guide on the hind coxa. They can be readily distinguished by colouration; A. nebo has an orange-brown head, meso- and metasoma, whereas the head and mesosoma are black and metasomal T1 and T2 are largely orange with remaining segments blackish brown in A. williamsi .