Aulacus rieki Jennings & Parslow & Austin 2018, sp. nov.
Creators: name: Jennings, John T.
name: Parslow, Ben A.
name: Austin, Andrew D.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Aulacidae
Aulacus
Aulacus rieki

description: Aulacus rieki Jennings & Austin, sp. nov.
Figs 42, 65.
Material examined. Holotype. ♀, “ Canberra A C T, 7 Mar 1960, E F Riek (ANIC). Paratypes. NSW: 1♀, Mt Brown, 10 Mar 1961, D.H. Colless (ANIC). Victoria: 1 ♂, Mallac [oota], 1915, J.E. Dixon (MVMA); 1♀, Mallacoota, 24.2.34, A.N. Burns (MVMA).
Description. FEMALE. Length. 6.6 (6.4–6.8) mm, excluding ovipositor.
Colour. Body dark brown-black, except frons and face darker, scape and pedicel pale brown, fore and mid legs pale brown except coxae dark brown, hind legs, basitarsus apically cream, tarsomeres 2–4 cream, T1 laterally and T2 brown, ovipositor brown (Figs 42 A, B). Wings hyaline except for brown infuscation apically on the marginal and third submarginal cells of fore wing (Fig. 42B).
Head. 1.1× wider than long when viewed dorsally (Fig. 42C); face punctate-rugose, pubescence long; indistinct sub-antennal groove; frons without lateral medial carina above toruli, rugose, scattered short setae; vertex and gena punctate-rugose, with scattered short setae, denser ventrally on gena; posterior margin of head very weakly concave in dorsal view; occipital carina absent; malar space 0.15 (0.14–0.17)× height eye; clypeus 3.6 (2.9–4.1)× as wide as high, margin sinuate, with medial process; distance from lateral ocellus to eye margin 0.63 (0.6–0.7)× distance between lateral ocelli; scape 1.3 (1.3–1.4)× length pedicel; first flagellomere 1.14 (1–1.33)× as long as scape, 0.61 (0.6–0.63)× as long as second flagellomere.
Mesosoma. Propleuron rugose, pubescence long, ventro-lateral carina present; pronotum rugose; mesoscutum in lateral view rounded antero-dorsally, medial and lateral lobes rugose, with scattered short setae, admedial lines present; notauli distinct, carinate, broad and deep; scutellum strigate-rugose, with two deep depressions, separated by a weak median carina; axillae rugose; metapostnotum broad, carinate, posterior margin convex; mesopleuron rugose, with long pubescence, denser ventrally; mesepimeron broad, carinate; metapleuron areolate, with short scattered setae, patch anteriorly before spiracle punctate to smooth posteriorly; propodeum areolate, posterior margin smooth, scattered long setae laterally; hind coxa strigate-rugose, pubescence short, ovipositor guide about ¼ way along coxa, oblique, distal fringe of long setae, no setae in groove; hind trochanter imbricate, pubescence short; prefemur on hind leg distinct; hind femur imbricate, pubescence short; hind tibia imbricate, pubescence short, with scattered stout emergent setae; hind femur 0.7× 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, 2.33 (2.25– 2.5)× length tarsomere 2; tarsomere 2, 1.43 (1.3–1.5)× length tarsomere 3; tarsomere 3, 2.66 (2.6–2.8)× length tarsomere 4; tarsomere 4, 0.53 (0.45–0.55)× length tarsomere 5; hind tarsal claw 0.53 (0.45–0.55)× 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. Clavate, 3.5 (3.4–3.7)× length of mesosoma (Fig. 42B); T1 and T2 narrow, T1 smooth, glabrous, T2 imbricate, glabrous, T3–T8 imbricate, short pubescence; ovipositor 5.2 mm.
MALE. Unknown.
Etymology. This species is named after the late entomologist, winemaker, and horticulturalist Edgar Frederick Riek.
Distribution. This species is known from several locations in ACT, NSW and Victoria (Fig. 65).
Biology. Nothing is known of the biology of this species.
Comments. Aulacus rieki is similar to A. fuscicornis. See comments under A. fuscicornis.
description: Published as part of Jennings, John T., Parslow, Ben A. & Austin, Andrew D., 2018, Systematics of the parasitoid wasp genus Aulacus Jurine (Hymenoptera: Evanioidea: Aulacidae) from Australia, pp. 1-113 in Zootaxa 4538 (1) on pages 78-79, DOI: 10.11646/zootaxa.4538.1.1, http://zenodo.org/record/3771367