Aulacus naumanni Jennings & Austin, 2018

Jennings, John T., Parslow, Ben A. & Austin, Andrew D., 2018, Systematics of the parasitoid wasp genus Aulacus Jurine (Hymenoptera: Evanioidea: Aulacidae) from Australia, Zootaxa 4538 (1), pp. 1-113 : 64-66

Aulacus naumanni Jennings & Austin , sp. nov.

Figs 34 , 63 .

Material examined. Holotype. ♂, “ Gibraltar Falls 27 Jan. 1984 ACT I.D. Naumann ex ethanol ( ANIC).

Description. MALE. Length. 5.56 mm.

Colour. Head and propleuron black, last four flagellomeres darker, ventral half of pronotum, mesopleuron and metapleuron black, T1–3 and anterior half of T4 orange, posterior half of T4 and T5–7 black, hind trochanteral groove and apex brown, fifth tarsomere darker ( Figs 34A, B ). Wings hyaline except for brown infuscation apically on the marginal and third submarginal cells of fore wing ( Fig. 34B ).

Head. 1.2× wider than long when viewed dorsally; face punctate-rugose, pubescence short; sub-antennal groove present; frons punctate-rugose, without lateral medial carina above toruli, with scattered short pubescence; vertex punctate-rugose, with scattered short setae; gena punctate-rugose, with scattered short setae; posterior margin of head slightly concave in dorsal view; occipital carina absent; malar space 0.23× height eye; clypeus 4.0× as wide as high, margin sinuate, distinct medial process; distance from lateral ocellus to eye margin 1× distance between lateral ocelli; scape 1.67× length pedicel; first flagellomere 1.16× as long as scape, 0.66× as long as second flagellomere.

Mesosoma. Propleuron rugose, pubescence long, ventro-lateral carina present; pronotum rugose; mesoscutum antero-dorsally angular in lateral view, medial and lateral lobes coarsely strigate-rugose, with scattered short setae, admedial lines present; notauli distinct, carinate, narrow and deep; scutellum and axillae strigate-rugose, scutellum anteriorly with single depression; metapostnotum areolate, posterior margin convex; mesopleuron rugose, with short pubescence; mesepimeron broad, carinate; metapleuron rugose, smooth patch anterior of spiracle, with short pubescence; propodeum areolate, medial carina absent, posterior margin smooth; hind coxa finely strigate, pubescence short laterally; 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 0.74× 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, 2.28× length tarsomere 2; tarsomere 2, 1.4× length tarsomere 3; tarsomere 3, 2.08× length tarsomere 4; tarsomere 4, 0.86× length tarsomere 5; hind tarsal claw 1.4× 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 largely spectral, with 3 hamuli.

Metasoma. Clavate, 1.8× length of mesosoma ( Fig. 34B ); T1 and T2 narrow, smooth, glabrous; remaining tergites imbricate, scattered setae, denser posteriorly; basiparameres narrow and pointed, pubescent toward tip, digitus about the same length as basiparameres ( Figs 34C, D ).

FEMALE. Unknown.

Etymology. This species is named for Ian Naumann, Director, SPS Capacity Building Program, Department of Agriculture, Fisheries and Forestry, Canberra ACT.

Distribution. This species is known only from the type locality, Gibraltar Falls, ACT ( Fig. 63 ).

Biology. Nothing is known of the biology of this species.

Comments. This species is largely orange, except head and propleuron black, last four flagellomeres darker, ventral half of pronotum, mesopleuron and metapleuron black, posterior half of T4 and T5–7 black, and hind trochanteral groove and apex brown, fifth tarsomere darker. This colour combination is different from all other Australian Aulacus species.

Figures

FIGURE 34. Aulacus naumanni sp. nov., holotype male, (A) dorsal habitus; (B) lateral habitus; (C) dorsal male genitalia; (D) lateral male genitalia.

FIGURE 63. Distribution of Aulacus minutus Crosskey, A. naumanni sp. nov., A. nebo sp. nov., and A. neboissi sp. nov.