268 
G.R. Brown 
4. Vertex with small reddish orange mark be¬ 
hind eye; body length>29 mm; parameres 
long, narrow and apically truncate (Figure 5) 
[WA, SA]............. miistus sp.nov. 
Vertex with small reddish orange mark at 
summit of eye; body length<28 mm; 
parameres short, broad and apically 
rounded (Figures 6) [WA]. 
... ivatherooensis sp.nov. 
5. Head, legs and body extensively marked 
with orange. insignis 
Head, legs and mesosoma dark brown to 
black.6 
6. T1 transversely multicarinate apically; 
pygidium (T6) as in Figure 8. molitor 
T1 not transversely multicarinate apically; 
pygidium otherwise. 7 
7. Pleurites and anterior margin of tergites 
yellow; pygidium narrowed medially (Figure 
9). mustus sp.nov. 
Head and body dark brown to black, 
concolorous; pygidium not narrowed 
medially (Figure 10). ivatherooensis sp.nov. 
Macrothynnus simillimus (Smith) 
Figure 3 
Thynnus simillimus Smith, 1859:15. 
Thytinus ( Macrothynnus) simillimus Smith: Turner, 
1908: 194. 
Macrothynnus simillimus (Smith): Turner, 1910: 45; 
Given, 1954: 47; Salter, 1954: 302. 
Material Examined 
Holotype 
6, New South Wales, Australia (BMNH 15.144). 
Other material 
Australia: New South Wales: 1<J, Sydney, W.W. 
Froggatt (ANIC); Id, nr Sydney, Oct.-Nov. 1906 
(SAM); Australian Capital Territory: Id, Jervis 
Bay, 18 Sept. 1951, S.J. Paramanov (ANIC). 
Diagnosis 
Large elongate black wasps with the clypeus 
yellow and metasoma reddish orange in the male. 
The male is distinguished by the parameres (Figure 
3) which are strongly curved and narrowed 
apically, and by the combination of tergites finely 
and closely punctate and T1 not tuberculate. It is 
the only species known from eastern Australia. 
Description Male 
Measurements 
Body: 29-32 mm; fore wing: 23-25 mm; hind 
wing: 17-18 mm. 
Colour 
Black; mandibles (except apex) and clypeus 
yellow; small spot behind eye and metasoma 
(except base of SI) reddish orange. Wings smoky 
brown; veins brown or black. Setae white. 
Structural features 
Clypeus truncate with rugose curved carinae; 
frons and vertex rugosely punctate; gena finely and 
rugosely punctate; antennal prominence broadly 
U-shaped, raised and carinate above antennal 
insertions; pronotum finely and closely punctate, 
anterior margin raised, not produced laterally; 
mesoscutum finely and rugosely punctate; 
mesoscutellum closely to almost rugosely punctate; 
metanotum closely to almost rugosely punctate; 
propodeum oblique without dorsal surface, 
rugosely punctate, densely covered with long curly 
setae; mesopleura, prosternum and coxae finely 
Figures 1-2 Macrothynnus spp.: 1, M. ivatherooensis sp.nov., male, apex of metasoma, dorsal view; 2, M. molitor 
(Smith), female, Tl-2. A: T7; B: S8; C: Tl; D: preapical carinae; E: basal carina of T2. Scales: 1 mm. 
