Cerodontha (Poemyza) superciliosa (Zetterstedt)

Lonsdale, Owen, 2021, Manual of North American Agromyzidae (Diptera, Schizophora), with revision of the fauna of the " Delmarva " states, ZooKeys 1051, pp. 1-481 : 1

Cerodontha (Poemyza) superciliosa (Zetterstedt)

Figs 559-563

Agromyza superciliosa Zetterstedt, 1860: 6455. Frick 1959: 381 [as synonym of Agromyza lateralis Macquart, followed by Spencer (1969)].

Agromyza coquilletti Malloch, 1913: 295. Shewell 1953: 466. Nowakowski 1973 [synonymy].

Phytobia ( Poëmyza) lateralis (Macquart). Misidentification. Frick 1959: 381.

Dizygomyza ( Poëmyza) Dizygomyza lateralis . Hendel 1931: 20.

Phytobia ( Poëmyza) Agromyza coquilletti . Frick 1952: 392.

Cerodontha (Poemyza) superciliosa . Nowakowski 1967: 650 [lectotype design.], 1973: 112; Sehgal 1971: 323; Spencer 1971: 319, 1981: 183; Spencer and Steyskal 1986b: 93; Benavent-Corai et al. 2005: 12; Papp and Černý 2016: 254.

Description.

Wing length 2.3-2.8 mm (♂), 2.5-3.0 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 0.9-1.2. Eye height divided by gena height: 4.3-5.0. Lunule higher than wide, smooth with broad, shallow pits, relatively well-sclerotised and sharply bent medially to follow curve of frons; with comparatively smooth, level interface with soft portion of frons.

Chaetotaxy: Two ori; two ors; length equal or decreasing anteriorly, or only with posterior seta long; often relatively short and straight, at least for ori, with length not exceeding width of soft portion of frons. One pair of prominent setae apically on each palpus.

Colouration: Setae dark brown. Frons light yellow to brownish with minute brown spots at base of fronto-orbitals and setulae; soft central region of frons with rows of dark pits that predominate towards lunule; back of head, first flagellomere, ocellar spot (larger than tubercle), clypeus, ventral margin of gena and palpus dark brown; postocellars on yellowish region; face mottled yellow, light brown and brown; pedicel, scape and ring around eye excluding venter of cheek brown; lunule brownish around base of antennae; lateral region of fronto-orbital plate narrowly brownish to orange with margin along eye sometimes brown, fading inwards to base of fronto-orbitals; central pitted region of gena light brown. Body dark brown with moderate greyish brown pruinosity; postpronotum light yellow with large anteromedial dark brown spot; notopleuron light yellow with small, lateral brown stripe; apex of fore femur light yellow for distance slightly more or less than width of femur apex; base of fore tibia light yellow; dorsal transverse carina on epandrium paler brown or yellowish. Halter light yellow. Calypter white.

Genitalia: (Figs 559-563 ) Epandrium very flattened dorsally, further emphasizing large, unusual supra-anal process, which is thick, flat, shelf-like and nearly as wide as epandrium. Surstylus rounded, small, and with additional broad, flat inwardly (and slightly ventrally) directed lobe; cluster of tubercle-like setae on surstylus proper and inner lobe. Basiphallus ventrally fused to phallophorus; sclerotised along left lateral surface, dividing into one pair of bands on distal 1/2, one of which extends to left distal margin and again bifurcates, and one of which wraps around dorsum to right distal margin. Hypophallus with one pair of long plate-like sclerites that fade distally and are irregularly fused via ridges medially. Paraphalli directed laterally at base, then sharply angled towards venter at midpoint; right sclerite reduced. Mesophallus stem swollen at base (bulge exaggerated in lateral view) and distal 2/3 dorsoventrally compressed; with basal process in front of duct insertion and with small shallow bump ventromedially; apical chamber swollen, bilobed, mostly produced below stem. Distiphallus tubules S-shaped with basal curve smaller and not straightened at origin (apex more strongly curved in figure provided in Nowakowski 1973); basal 1/2 well-sclerotised, distal 1/2 mostly clear with small apical cup and single lateral band sclerotised. Ejaculatory apodeme well-developed with darker base and slightly darker margin; sperm pump with venter sclerotised.

Host.

Poaceae - Agropyron , Ammophila , Apera , Avena , Dactylis , Echinochloa , Elymus , Hordeum , Phleum , Poa , Secale , Triticum , Zea .

Distribution.

Canada: AB, BC*, MB, NB, NS*, NT, ON, QC, SK, YT. USA: "many of the States in the northern 1/2 of the United States"; published state occurrences include AK, CA, CO, IN, KS, MA, ND, NH, NV, OH, PA, VT. Europe, Russia, China, Japan ( Papp and Černý 2016).

Type material.

Lectotype [superciliosa]: Sweden. Stockholm, Nr. 363/65 (1♂ NRS, coll. Bohemann).

Holotype [ Agromyza coquilletti ]: USA. CO: Fort Collins, Webster’s No. 6610, C.N. Ainslie (1♀, USNM).

Paratypes examined

[ Agromyza coquilletti ]. IN: Lafayette, P. Luginbill, issued 2.vi.1912, "PARATYPE No. 15569" (1♂, USNM), NV: Lincoln, G.I. Reeves, Webster No. 2952, "PARATYPE No. 15569" (1♀, USNM) [Not mentioned in original description].

Additional material examined.

Canada. AB: Banff Natl. Park, Eisenhower Junction , 1432 m, 6.vi.1955, J.R. McGillis, CNC481240 (1♂, CNC), Banff , 1357 m, along roadside, 26.v.1960, B.S. Heming, CNC481295 (1♀, CNC), Black Foot Coulee , 9.viii.1940, A.R. Brooks, CNC481278, CNC481288 (2♀, CNC), Black Foot Hills , 9.viii.1940, A.R. Brooks, CNC481226-481233, CNC481279-481287 (8♂ 9♀, CNC), Elkwater L., swept from range grass, 2.vii.1956, O. Peck, CNC481292 (1♀, CNC), Lethbridge , Oldman River , 22.vi.1956, O. Peck, CNC481296 (1♀, CNC), BC: Atlin , 24.vi.1955, B.A. Gibbard, CNC481251 (1♂, CNC), Oliver , 18.viii.1953, J.R. McGillis, CNC481250 (1♂, CNC), Osoyoos , 49°1'40.68"N, 119°27'8.10"W, alfalfa, 26.v.2005, Goulet and Boudreault , Site 8, CNC481269 (1♀, CNC), Summit Lake , mi392 Alaska Hwy , 1371 m, 8.vii.1959, R.E. Leech, CNC481297 (1♀, CNC), MB: 1 km NW of Winnipegosis, Hwy 20, 51°39'3.96"N, 99°56'42.96"W, prairie habitat, 16.vi.2007, Goulet and Boudreault , sweeping, CNC481270 (1♀, CNC), 5mi N Minnedosa, 8.vii.1958, R.L. Hurley, CNC481293, CNC481294 (2♀, CNC), Aweme , 18.vii.1916, N. Criddle, CNC481225 (1♂, CNC), 4.vii.1917, CNC481289, CNC481290 (2♀, CNC), 3.vii.1922, H.A. Robertson, CNC481291 (1♀, CNC), Shilo , 5mi SW, 13.vii.1958, J.G. Chillcott, CNC481234 (1♂, CNC), floodplain comminuty nr. tamarack bog, open grassy marsh, 2.viii.1958, CNC481235, CNC481274, CNC481276, CNC481277, CNC481275 (1♂ 4♀, CNC), Treesbank , 23.vii.1915, N. Criddle, CNC481236 (1♂, CNC), 6.viii.1915, N. Criddle, Teste Aldrich , CNC481237-481239, CNC481271, CNC481272 (3♂ 2♀, CNC), Whitewater L., 4mi N Whitewater, swept from Hordeum jubatum , 14.viii.1958, J.G. Chillcott, CNC481273 (1♀, CNC), NB: Richibucto , on tidal flat, 12.vii.1977, J.R. Vockeroth, CNC481267 (1♂, CNC), NT: Yellowknife , 64°5'0"S, 111°15'0"W, 5.vi.1953, J.G. Chillcott, CNC_ Diptera 59172, CNC481252 (2♂, CNC), NS: S. Harbor, 11.vii.1984, H.J. Teskey, PG961944 , CNC481268 (1♂, CNC), ON: Atikokan, 4mi E of Hwy. 11, 5.vii.1978, H.J. Teskey, CNC481257 (1♂, CNC), Grand Bend, 19.vii.1939, G.E. Shewell, CNC481259 (1♂, CNC), One Sided Lake , 29.vi.1960, Kelton and Whitney, CNC481310 (1♀, CNC), Ottawa, 24.v.1946, A. Brooks, CNC481311 (1♀, CNC), Penetang, 1.viii.1955, J.G. Chillcott, CNC481258 (1♂, CNC), Simcoe, 15.vi.1939, G.E. Shewell, CNC481260-481263 (4♂, CNC), Stratford, 5.vii.1916, CNC481256 (1♂, CNC), Waubamick, vi.1915, H.S. Parish (1♂, USNM), QC: Breckenridge, 28.vi.1959, C.H. Mann, CNC481266 (1♂, CNC), Ile de Montreal , 5.viii.1906, Beaulieu, CNC481264, CNC481313 (1♂ 1♀, CNC), Mi. 139 Rte. 58, La Verendrye Prov. Pk., 28.vi.1965, D.M. Wood, CNC481312 (1♀, CNC), Rupert House, 29.vii.1949, E.J. LeRoux, CNC481265 (1♂, CNC), SK: 11 km S Empress, AB, riverine cottonwood, maple, 12-19.viii.1986, J. Acorn, Malaise trap, CNC481298, CNC481299 (2♀, CNC), Buchanan, 6.viii.1925, K.M. King, CNC481303 (1♀, CNC), Great Deer, 8.ix.1950, J.R. Vockeroth, CNC481300 (1♀, CNC), Indian Head, 6.ix.1920, S. Stewart, CNC481242 (1♂, CNC), Pheasant City, 13.vii.1937, A.R. Brooks, CNC481241 (1♂, CNC), Saskatoon, 16.viii.1939, A.R. Brooks, CNC481243, CNC481302 (1♂ 1♀, CNC), 6.viii.1939, CNC481301 (1♀, CNC), Saskatoon, 22.vii.1933, K.M. King, 16447-1129B, CNC481305 (1♀, CNC), 22.viii.1927, 16446-126BG, CNC481248 (1♂, CNC), 25.viii.1923, 16410-3N9B, CNC481244, CNC481245 (2♂, CNC), 26.vi.1930, 16424-330B, D360, CNC481246 (1♂, CNC), 27.vii.1923, 16410-4N10B, CNC481304 (1♀, CNC), 4.vii.1930, 16448-1227AN, CNC481306 (1♀, CNC), 6.viii.1931, 164464-832B, CNC481247 (1♂, CNC), 6.viii.1935, 164464-832B, CNC481249 (1♂, CNC), YT: Kusawa Lake Road, 60°42'12.66"N, 136°4'18.72"W, 699 m, 6.vii.2006, Goulet and Boudreault, sweeping, CNC481221-481224 (4♂, CNC), Rampart House, 67°25'26.56"N, 140°59'0.68"W, 2.vi.1951, C.C. Loan, CNC_Diptera59173 (1♀, CNC), Whitehorse, 23.viii.1959, R. Madge, CNC481253 (1♂, CNC) . Denmark. Gudhjem , Bornholm, F. Budman, mine an Ammophila arenaria coll. Hypon., M. Hering, 3329, CNC481315 (1♂, CNC), Maribo , Bota [?], Sönderup, 3.viii.1932, mine an Psamma arenaria coll. Hypon., M. Hering, CNC481314 (1♀, CNC) . USA. AK: Fairbanks , 13.vi.1952, J.B. Hartley, CNC481307 (1♀, CNC), CO: Boulder Co., Corona Pass , 3230 m, 6.vii.1961, J.G. Chillcott, CNC481309 (1♀, CNC), Mt. Evans , 3566 m, timberline, 22.vii.1961, W.R.M. Mason, CNC481254 (1♂, CNC), Niwot Ridge , nr. Ward , 3505 m, on tundra, 4.vii.1961, C.H. Mann, CNC481308 (1♀, CNC), C.N. Ainslie, reared from Agromyza in Agrobyron Webster No. 13784, Wimbeldon NBJ16915 , CNC481255 (1♂, CNC), Crook, 15.vi.1940, A.L. Melander (1♂, USNM), NH: Mt. Wash., Alpine Garden, 2.vii.1956, 5900', A.L. Melander (1♂, USNM) .

Comments.

While Cerodontha (Poemyza) superciliosa has not been confirmed in the Delmarva states, Frick (1959) noted that he had seen specimens from "many of the States in the northern 1/2 of the United States", and it is thus included here. Characteristic of this species are light yellow shoulders and a light yellow, smooth (shallowly and gently textured) and medially angulate lunule that meets a similarly yellow frons that is darker, pitted, and softer anteriorly. The large, wide, and flat supra-anal process of the male is also highly characteristic.

Figures

Figures 559 - 563. Cerodontha (Poemyza) superciliosa (Zetterstedt), male genitalia 559 external genitalia, posterior 560 external genitalia, left lateral 561 ejaculatory apodeme 562 phallus, left lateral 563 phallus, ventral.