Agromyza vockerothi Spencer, 1969

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

Agromyza vockerothi Spencer

Figs 243-249

Agromyza vockerothi Spencer, 1969: 60. Spencer and Steyskal 1986b: 269; Eiseman and Lonsdale 2018: 14.

Description.

Externally as described for A. isolata except as follows: Wing length 2.4-2.7 mm (♂), 2.4 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 0.6-0.8. Eye height divided by gena height: 3.8-6.5. Sometimes three ori on one side of frons. Overall colour slightly darker, with antenna dark brown and calypter margin and hairs always brown; mid and hind tibiae brown with apex and sometimes base yellowish. First flagellomere sometimes appearing slightly angulate and with some longer apical hairs.

Genitalia: (Figs 243-249 ) Surstylus not distinct from epandrium (which has desclerotised distal emargination), and with several setae and tubercle-like setae on inner margin. Hypandrium long and narrow, sides nearly parallel and with tapered apical process. Postgonite small, dome-like with several outer setulae. Phallophorus atrophied on right side, produced and slightly setulose on left side, fused to right sclerite of basiphallus, twisting around shaft; left sclerite of basiphallus narrow, curving around venter at base. Basiphallus broad and fringed basally with dextral twist. Hypophallus composed of weak, long narrow band. Mesophallus short, cylindrical, with longer ventral plate. Distiphallus short, subcylindrical with ventral break, and fringed along distal and ventral margins.

Host.

Rosaceae - Rubus .

Distribution.

Canada: AB, BC, ON, NS. USA: CT*, DC*, MA, MD*, NC, NH*, NY*, PA*, TN, VA*.

Type material.

Holotype: Canada. NS: Shelburne, 10.viii.1958, J.R. Vockeroth, Type No. 10356, CNC352998 (1♂, CNC).

Paratypes examined.

ON: Maynooth, 22.vi.1953, J.F. McAlpine, CNC353000 (1♂, CNC), Ottawa, 5.vi.1946, G.E. Shewell, CNC353001, CNC353002 (2♂, CNC), Golden Lake, 3.ix.1956, J.R. Vockeroth, CNC353003 (1♀, CNC), QC: Old Chelsea, 18.viii.1961, J.R. Vockeroth, CNC352999 (1♂, CNC).

Material examined.

Canada. BC: 20 km E Pemberton, 14.viii.1991, A. Borkent, CNC353014, CNC353015 (2♂, CNC), Hagensborg, 12.vii.1992, A. Borkent, CNC353016 (1♂, CNC), 42 km NE Hope, 2.viii.1991, A. Borkent, CNC353015 (1♂, CNC), 32 mi SW of Terrace, 9.vii.1960, J.G. Chillcott, CNC353017 (1♂, CNC), ON: St. Lawrence Is. Nat. Park, Aubrey Island, 4.ix.1976, W. Reid, Code 4618-R, CNC353006 (1♂, CNC), St. Lawrence Is. Nat. Park , Cedar Island , 31.viii.1976, W. Reid, Code 4586-L, CNC353007 (1♀, CNC), St. Lawrence Is. Nat. Park , McDonald Is., 14.vi.1976, 6.ix.1976, A. Carter, W. Reid, Code 4092-J, Code 4633-G, CNC353005, CNC353008 (1♂ 1♀, CNC), St. Lawrence Is. Nat. Park , Thwartway Is., 24.vii.1976, W. Reid, Code 4198-L, CNC353009 (1♀, CNC) . USA. CT: Kent Fall, 28.viii.1940, A.L. Melander (1♂, USNM), Redding, 28.v.1939, A.L. Melander (1♂, USNM), DC: Washington, “v-17”, J.M. Aldrich (1?, USNM), MA: Franklin Co., Northfield, Crag Mountain , 11.x.2013, ex. Rubus (blackberry), em. 27.iii.2014, C.S. Eiseman, #CSE1030, CNC384794 (1♂, CNC), MD: Glen Echo, 21.viii.1921, J.R. Malloch (1♂, USNM), Colesville, 1.v.1977, W.W. Wirth (1♀, USNM), Montgomery Co. , Dickerson, 14.vii.1974, G.A. Foster (1♀, USNM), NC: Highlands, Wilson’s Gap, 944 m, 12.v.1957, J.R. Vockeroth, CNC353011 (1♀, CNC), Mitchell Co. , Roan Mtn, 1889 m, 13.viii.1957, J.G. Chillcott, CNC353010 (1♀, CNC), Wyah Bald, 13.vi.1957, C.J. Durden, CNC353012 (1♀, CNC), NH: White Mts. , Stinson Lake , 23.vii.1961, W.W. Wirth (1♂, USNM), NY: Allegany St. Pk. , 28.v-3.vi.1963, stream margin, W.W. Wirth (1♂, USNM), Orleans Co. , Albion, 11.vi.1963, Burma woods, W.W. Wirth (1♂, USNM), Monroe Co. , Braddock Bay , 12.vi.1963, near marsh, W.W. Wirth (1♂, USNM), PA: Mineral Spr., 5.ix.1927, A.L. Melander (2♂, USNM), Monroe Co. , Mt. Pocono , 28.vii.1985, G.F. and J.F. Hevel (1♂, USNM), TN: Smokies, Chimneys, A.L. Melander, 25.vi.1941 (1♀, USNM), 20.vi.1941 (1♂, USNM), Indian Gap to Clingman’s Dome, 5200-6600', 6.viii.1957, J.G. Chillcott, CNC353004 (1♂, CNC), VA: Luray, 24.vi.1923, A.L. Melander (1♂, USNM), Fairfax Co. , Turkey Run Park, nr. mouth of Turkey Run, 38°57.9'N, 7°09.4'W, Malaise trap, river trap, 17-24.v.2006, D.R. Smith (1♀, USNM) .

Figures

Figures. 243 - 249. Agromyza vockerothi Spencer, male genitalia 243 external genitalia, posterior 244 external genitalia, anterior 245 external genitalia, left lateral 246 external genitalia, ventral 247 hypandrium and postgonite, ventral 248 phallus, left lateral 249 phallus, ventral.