Australian Journal of
Taxonomy
Open-access, online, rapid taxonomy
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Disaulacinus flavimanus Kieffer 1911: 224.—Kieffer 1912: 361; Hedicke 1939: 23.
Aulacus flavimanus (Kieffer)—Crosskey 1953 (as A. flavimannus): 759; Smith 2001: 271); Jennings 2010 [on-line checklist]; Turrisi 2017: 932; Jennings et al. 2018: 42.
Aulacinus pallidicaudis Cameron 1911: 344.—Hedicke 1939: 26.
Aulacus pallidicaudis (Cameron)—Smith 2001: 273, comb. nov.; Jennings 2010 [on-line checklist]; Turrisi 2017: 933; Jennings et al. 2018: 71. syn. nov.
Figure 35. Aulacus flavimanus (Kieffer), female, lateral habitus; B, male, lateral habitus. Scale bar = 1.00 mm.
Figure 36. Aulacus flavimanus (Kieffer), female, A, lateral head; B, frontal face; C, dorsal head; D, lateral mesosoma; E, dorsal mesosoma; F, posterior-dorsal metacoxa; G, fore wing, H, hind tarsal claw. Scale bar = 1.00 mm.
Diagnostic description.
Aulacus flavimanus is a distinctive species that can be separated from other Australian species on the combination of colouration, black with orange antenna and the presence of medial process on tarsal claw (Fig. 36H).
Female. Body size 7.6 (7.6–8.9) mm, ovipositor length (5.8–7.5) mm, fore wing length (5.5–6.7) mm (Fig. 35A); colouration black, antenna orange, flagellomere 12 black, legs dark brown, tibia and tarsus lighter, ovipositor sheath orange, apex dark brown; wings hyaline, indistinct brown obfuscation of apex 1st marginal and 4th submarginal cell, hind wing veins spectral (Fig. 36G); head shape quadrate, width 1.3 (1.3) × length, postocular space (0.9–1.0) × eye length in dorsal view (Fig. 36C), raised transverse carina above toruli present, malar space 1.0 (0.1–0.2) × height of eye (Fig. 36A); length of scape 1.9 (1.6–1.8) × length of pedicel, 1st flagellomere 1.0 (1.3–1.4) × length of scape, 0.7 (0.7) × 2nd flagellomere; mesosoma length (1.3–1.6) × height, mesoscutum in lateral view rounded antero-dorsally (Fig. 36D); mesoscutum length (0.6) × width in dorsal view (Fig. 36E); medial lobe transverse carinae; ovipositor guide absent (Fig. 36F); ovipositor sheath length (1.1) × fore wing length (Fig. 35A); 2-Rs+M (0.3–0.4) × 1-Rs+M, four hamuli, equidistant (Fig. 36G); metasoma clavate; T1+T2 length 2.9–3.8 × width in dorsal view.
Variation. some specimens with variable amounts of black on flagellomeres 8 to tip and hind legs dark brown.
Male. Body size (7.0–8.2) mm, similar to female except variable amounts of dark brown on dorsal surface of antenna, metatibiae in some specimens with cream patch basally (Fig. 35B).
Material examined.
Holotype. AUSTRALIA – Victoria • ♀, "Melbourne, Victoria" "c. 7.9.[19]00" "A.J. Turner 1907–244" (NHMUK: 011507534). Flagellomeres 3–12 missing, metathorax glued to card, apex of right fore wing damaged, ovipositor missing.
Other material examined.
AUSTRALIA – NSW • 1 ♀, Syntype of Aulacus pallidicaudis "Rose Bay (W.W.F.) Sydney, N.S.W. Bred from larvae of Piesarthrius marginellus" (NHMUK: 013457843) (examined from photographs) • 1 ♂, mounted on same card as syntype of Aulacus pallidicaudis (NHMUK) (examined from photographs) • 1 ♂, Rose Bay, 28.Sep.1894, W.W.Froggatt leg. (ASCU); 2 ♀♀, Rose Bay, no other data (ASCU). – Queensland • 12 ♀♀, 2 ♂, Cardwell, Jan.1991, W. Travers leg., ex hollow branch lychee tree (ANIC).
Figure 35. Aulacus flavimanus (Kieffer), female, lateral habitus; B, male, lateral habitus. Scale bar = 1.00 mm.
Figure 36. Aulacus flavimanus (Kieffer), female, A, lateral head; B, frontal face; C, dorsal head; D, lateral mesosoma; E, dorsal mesosoma; F, posterior-dorsal metacoxa; G, fore wing, H, hind tarsal claw. Scale bar = 1.00 mm.
Distribution.
This species is widely distributed with records from northern Queensland, New South Wales and Victoria (Fig. 93).
Biology.
The females of this species have been bred from the larvae of the feather-horned longicorn, Piesarthrius marginellus Hope (Cerambycidae). A series of 15 specimens from Cardwell, Queensland were reared from a hollow branch of a lychee tree. The pupal cases are grouped together forming a cylindrical shape, suggesting the specimens may have emerged from a single host larvae.
Notes.
The type specimens of A. flavimanus and A. pallidicaudis both exhibit the distinctive medial process on the tarsal claw (Fig. 36H) and exhibit slight variation in sculpturing and colouration. Since A. pallidicaudis was described subsequent to A. flavimanus, it is considered a junior synonym. Therefore, we synonymise A. pallidicaudis with A. flavimanus.