Anu una Thompson

Thompson, Christian, 2008, A conspectus of New Zealand flower flies (Diptera: Syrphidae) with the description of a new genus and species, Zootaxa 1716, pp. 1-20 : 9-12

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).

Etymology: The specific epithet, una , is an arbitrary combination of letters and is to be treated as a noun in apposition.

Figures

FIGURES 28 – 31. Abdomen and male genitalia. Anu una Thompson, Adult male. 28. Abdomen, lateral view; 29. Abdomen, dorsal view; 30. Male genitalia, 9 th tergum and associated structures, lateral view; 31. Male genitalia, 9 th sternum and associated structures, lateral view.