A conspectus of New Zealand flower flies (Diptera: Syrphidae) with the description of a new genus and species Author Thompson, Christian text Zootaxa 2008 1716 1 20 journal article 49929 10.5281/zenodo.181009 c70896b6-ffba-4d44-95b9-62d9a262c2ab 1175-5326 181009 Anu una Thompson , sp. nov. MALE. Head : Face yellow, except tubercle brown, white pilose; gena yellow, white pilose; frontal triangle yellow, black pilose; vertical triangle shiny, black, black pilose; occiput black, white pollinose and pilose on ventral 2/3, black pollinose dorsally except along eye margin, black pilose dorsally; antenna orange except basoflagellomere brownish orange on apical 3/4, black pilose; arista brown. Thorax : Postpronotum yellow; mesonotum shiny, black except with yellow lateral vitta from postpronotum to transverse suture, black pilose; scutellum yellow except black basolateral side, black pilose; pleuron shiny, extensively black, yellow dorsad of procoxa, yellow dorsally on katepisternum, yellow posteriorly on anepisternum, yellow narrowly and dorsally on anepimeron, and yellow on katatergite; calypter, plumula and halter yellow. Wing: Hyaline, microtrichose except bare basal 7/8 of cell C, basal 1/8 of cell BM and CuP. Legs: Coxae and trochanters yellow, pale pilose; femora brownish yellow, black pilose; tibiae brownish yellow on basal 3/4. brown apically, black pilose; tarsi black, black pilose. Abdomen : Terga brownish yellow on lateral 1/4, blackish brown medially, long white pilose on 1st and 2nd terga, short, sparse black pilose elsewhere; sterna brownish yellow; male genitalia as figured ( Figs 30– 31 ). Female: Similar to male; front yellow on ventral 1/4, black dorsally, black pilose; 1st tergum black, shiny, white pilose; 2nd tergum shiny, black except yellow small macula on lateral 1/4 medially, white pilose except black pilose medially; 3rd & 4th terga shiny, black except larger yellow triangular macula on lateral 1/3 medially and yellow apical margins; 5th tergum black, black pilose. Variation: The above description is of the holotype male and allotype female and will match most specimens precisely. However, a few individuals tend to be darker, with the darkest individuals having broad black facial vitta and an almost entirely dark pleuron. Types : Holotype male, allotype female and 6 male , 4 female paratypes : NEW ZEALAND , South Island, Rahu Saddle Peak, 672 m , Rt 7, 8 km west Springs Junction, 18 December 1986 , F. C. & B. J. Thompson. Holotype and allotype deposited in NZAC; rest of topotypic series deposited in USNM. Paratypes : NEW ZEALAND . North Island : Taupo, Tauhara, 27 December 1931 , J. S. Armstrong ( 2 females , NZAC); Ohakune, Mt. Ruapehu, 12–1300 m , 19 January 1999 , S. A. Marshall ( 6 males , 4 females , CNC, DEBUG, USNM); Taranaki National Park, Pembroke Road, 1200 m , 9 January 1999 , S. A. Marshall ( 1 male , DEBU); Wellington Harbour [as "York B."], J. G. Myers ( 1 male , NZAC); Tararua Ranges, Dundas Hut, 1250 m , sweeping, 5 February 1985 , C. F. Butcher ( 1 male , NZAC); Tararua Ranges, Dundas Hut Ridge, sweeping before Malaise trap, 11 February 1985 , C. F. Butcher ( 1 male , NZAC). South Island : Nelson, "Dun Mt." 23 January 1923 , J. G. Myers ( 1 female , NZAC); Borland Saddle (FD), 22 km west of Monowai, 167?23.2'E 45?44.8'S, 945–988 m , 17–18 January 2004 , W. N. Mathis ( 3 males , USNM); Rahu Saddle, 4 km west Springs Junction, 18 December 1986 , F. C. & B. J. Thompson ( 9 males , 8 females ; USNM); Lewis Pass National Park, Lewis Pass Summit, 911 m , 31 December 1986 , FC & BJ Thompson ( 1 female , USNM); Lewis Pass National Park, Wee Creek, Rt 7, 31 December 1986 , F. C & B. J. Thompson ( 4 males , 6 females ; USNM); Arthur's Pass National Park, Arthur's Pass Summit, 920 m , 27-28 December 1986 , FC & BJ Thompson ( 21 males , 5 females ; USNM); Arthur's Pass National Park, Warden's Creek, Rt 73, 27-28 December 1986 , FC & BJ Thompson ( 1 female ; USNM); Arthur's Pass National Park, Greyney's Shelter, Rt 73, 27 December 1986 , F. C. & B. J. Thompson ( 2 females ; USNM); Arthur's Pass, 8–11 January 1957 , E. S. Gourlay ( 1 male , NZAC); Arthur's Pass, 2800 ft ., 22 December 1922 , J. Myers ( 1 male , NZAC); Arthur's Pass, 3500 ft ., 26 December 1922 , J. Myers ( 1 male , NZAC); Arthur's Pass, 3000 ft ., 4 January 1923 , Myers ( 1 male , NZAC); Arthur's Pass, 3000 ft ., 16–19 December 1959 , J. I. Townsend and J. S. Dugdale ( 1 male , NZAC); Mt. Arthur, 4500 ft ., 27 Dec 1921 , A. Tonnoir ( 1 male , Bezzi Collection, Milan); Mt. Arthur, 4500 ft ., 12 December 1922 , A. Philpott ( 1 male , NZAC); Kelly's Creek Campgrounds, near Otira, 20–23 Jan 1974 , G. E. Shewell ( 1 female , CNC); Otira Gorge Peak, Rt 73, 28 December 1986 , F. C. & B. J. Thompson ( 1 male ; USNM); Governors Bay, 3 December 1921 , J. W. Campbell, BM 1922-175, ( 1 female , BMNH); Dunedin, Flagstaff, 10 December 1921 , T. R. Harris, BM 1923-125 ( 1 female , BMNH); Lake Wakatipu, January 1921 , G. V. Hudson, BM 1923-323 ( 2 females ; BMNH); Nevis Saddle, 3250 ft ., 25 January 1959 , J. I. Townsend ( 1 female , NZAC); Blackbirch Range, 4400 ft ., around seepage at light, 17 February 1970 , J. S. Dugdale ( 1 female , NZAC); W of Staveley, SH 72, Nothofagus forest, 2 December 1977 , E. Schlinger ( 2 females , NZAC); Paparoa Range, Lochnagar Ridge, 3500–4300 ft ., J. S. Dugdale and J. C. Watt ( 2 females , NZAC); Routeburn, 2–5 January 1945 , E. S. Gourlay ( 1 female , NZAC); Darran Mts, Tutoko Bench, South Gully, 945–1158m , 9 January 1977 , J. S. Dugdale ( 1 female , 1 male , NZAC); Lake Rotoiti, 1–12 January 1976 , malaise trap, A. K. Walker ( 1 male , NZAC), Lake Luna, 22 December 1919 ( 1 male , NZAC); Bold Peak, 27 December–1 January 1945 , E. S. Gourlay ( 1 male , NZAC); Old Woman Range, 1524 m , sweeping, 13 February 1983 , J. C. Watt ( 1 male , NZAC). FIGURES 20–26. Adult structures. 20. Eristalinus aeneus (Scopoli) , posterior lateral thorax and wing base, dorsal view; 21–22. Metasternum and metalegs, ventral view. 21. Melanostoma mellinum (Linnaeus) ; 22. Platycheirus sp. 23–26. Heads, lateral view. 23. Eristalis tenax (Linnaeus) ; 24. Paratropidida bilineata (Walker) ; 25. Eristalinus aeneus (Scopoli) ; 26. Helophilus cingulatus (Fabricius) FIGURE 27. Adult male habitus, lateral view. Anu una Thompson , sp. nov. Etymology : The specific epithet, una , is an arbitrary combination of letters and is to be treated as a noun in apposition.