The Froggattimyia-Anagonia Genus Group (Diptera: Tachinidae)
Creators: name: Colless, Donald H.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy

description: Anagonia minor sp. nov.   
Figs 56, 57, 77  
 Types. Holotype male in ANIC, no. 29-029363, Black Mtn, ACT, light trap, 27 Jan. 1965, IFBC, terminalia in tube 87. Paratypes (all males):— Australian Capital Territory: 17 specs. as for holotype, but: 20 Dec. 1957, T.t. 195; 4 Jan. 1965, T.t. 198; 5 Jan. 1965, T.t. 187; 7 Jan. 1965, T.t. 199; 15 Jan. 1965, T.t. 119; 22 Jan. 1965, T.t. 117; 9 Dec. 1965, T.t. 170; 16 Dec. 1965 (2 specs.), T.t. 138 and 144; 17 Dec. 1965, T.t. 154; 22 Dec. 1965, T.t. 137p; 5 Jan. 1966 (2 specs.), T.t. 143 and 152; 17 Jan. 1966, T.t. 167; 18 Jan. 1966, T.t. 153; 20 Jan. 1966, T.t. 160; 26 Jan. 1966, T.t. 329.— Queensland: 15°14'S 145°07'E, 7 km N of Hopevale Mission, 4 Oct. 1980, DHC (at light), T.t. 2162; 15°02'S 145°16'E, Mt Cook NP, 10 May 1981, DHC, (at light), T.t. 2231.   
A small very dark species, integument and vestiture mainly dark brown to black.  
 Male. Head. Width 1.6–2.1, mean 1.87 mm. Eye very inconspicuously haired, mainly on ventral parts. Integument of head very dark, almost black in ground colour, with stout silvery frosting. First flagellomere appearing rather shorter than usual (but I cannot find a convincing ratio to support this). Frons rather narrower than usual, Frw/Hdw 0.20; gena relatively narrow, Gnw/Eyh 0.30. Margins of face strongly diverging, parafacial therefore rather narrow, Ivb/Vb-E 1.4–1.7, mean 1.54. Fine hairs of vertex and front of head relatively long and profuse. Ocellar setae very finely developed; postocellar setae 2–5, usually 3 or more. Upper occiput with at least 1 row of black setulae behind postorbital setae.   
 Thorax. Integument dark, median vitta stout. Dorsocentral bristles 2+4; presutural intra-alar absent on at least one side, usually both; intrapostalar absent. Scutellum with c. basal half blackish, remainder dark brown; apical setae highly variable in shape.   
 Wing. Tegula brown to dark brown. Upper calypter dark on internal margin, remainder grey-brown on about basal  2  ⁄ 3, apical portion pale.   
 Legs. Foretibia with apical d spine unusually large in some specimens, 2.0–2.5 times as long as ad spine. Hindtibia with pd1 usually shorter than apical d, ratio Pd1/Sdd 0.8–1.2, mean 0.96; ad comb rather distinctive, sparse but longer than usual in such small specimens.   
 Abdomen. Syntergite 1+2 sometimes with a pair of submedian marginals; those on tergite 3 usually differentiated but quite fine.   
 Terminalia (Figs 56, 57, 77). Strongly sclerotized, dark, especially sclerites of phallus. Structurally similar to A. perplexa (below). syntergosternite 6–8 similarly short and precipitate posteriorly. Curvature of surstyli rather angulate (not well brought out in the figure), its base expanded posteriorly in a fairly characteristic fashion. Cerci not exserted and short, apex falling at or somewhat short of bend of surstylus; basal lobe very conspicuous, separated from apical part by a distinct notch; apical part a little shorter than basal part, with a subapical patch of setulae. Epiphallus developed but very faintly sclerotized and seen only with careful microscopy (not at all in some specimens apparently because overlain by very dark postgonites).   
 Female. Not recognized; perhaps very similar to the A. opaca female.   
 Distribution. Most material taken in the ACT; two specimens from northern Queensland are available.   
 Biology. Nothing known except that the species enters light traps. Despite the many males taken in light traps in Canberra, I am unable to recognize the female.   
 Notes. Very similar in some respects to members of the perplexa complex (below) especially in the male terminalia, but very different in size and colour. Very similar externally to A. opaca, but males immediately recognizable by the finely developed ocellar bristles, and by the terminalia. The distinctively high Ivb/Vb-E reflects little more than overall size.
description: Published as part of Colless, Donald H., 2012, The Froggattimyia-Anagonia Genus Group (Diptera: Tachinidae), pp. 167-211 in Records of the Australian Museum 64 (3) on pages 200-201, DOI: 10.3853/j.0067-1975.64.2012.1590, http://zenodo.org/record/4684127