Aulagromyza orbitalis (Melander)

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

Aulagromyza orbitalis (Melander)

Figs 436-441

Phytomyza orbtalis Melander, 1913: 271.

Phytagromyza orbitalis . Frick 1952a: 416, 1957: 204 [lectotype designation], 1959: 417.

Paraphytomyza orbitalis . Spencer 1969: 207; Spencer and Steyskal 1986b: 165.

Aulagromyza orbitalis . von Tschirnhaus 1991: 305; Scheffer et al. 2007: 771; Eiseman and Lonsdale 2018: 26; Eiseman et al. 2021: 21.

Description

(Fig. 436 ). Wing length 1.8-2.4 mm (♂), 2.1-2.6 mm (♀). Vein dm-m absent. M1+2 nearly spectral. First flagellomere slightly longer than high. Eye height divided by gena height: 4.8-8.1. Parafacial very narrow. Gena straight, angled upwards. Ocellar triangle length ~ 2/3 width with posterior ocelli widely spaced. Lunule shallow, semi-circular.

Chaetotaxy: Two ori (anterior seta sometimes reduced); two ors. Postocellar and ocellar setae well-developed. Orbital setulae very small, fine, reclinate or more erect, in one row. Five to six dorsocentrals, four postsutural, decreasing in length anteriorly. Four relatively straight to scattered rows of acrostichal setulae. Prescutellar acrostichal seta small to strong. Small seta medial to presutural supra-alar.

Colouration: Setae brown to dark brown. Base colour of body dark brown with brown pruinosity. Head dirty yellow to brownish; antenna yellow to brownish with first flagellomere brown to dark brown (inner base sometimes yellowish); frons with broad brown spot surrounding base of vertical setae that sometimes extends along eye margin lateral to posterior fronto-orbital; fronto-orbital plate sometimes brownish; ocellar triangle dark brown with broadly rounded corners that only slightly extend outside tubercle; gena brown below cheek with ventral margin dark brown; palpus light brown; face with brown mottling that predominates laterally, or face brown with yellow tint and yellow vertical stripe medially; back of head and clypeus dark brown. Postpronotum light yellow with large dark brown spot reaching anterior margin; notopleuron light yellow; anterolateral corner of postsutural scutum usually narrowly light yellow; posterolateral corner of scutum lateral to scutellum with ill-defined light yellow spot. Pleuron dark with limited light yellow margins posterodorsally on anepisternum. Halter yellow. Calypter pale with hairs brown. Wing veins brown. Legs with apex of femora yellow for length approximately equal to width of femur apex; fore tibia dirty yellow to yellow, sometimes brownish medially; base of mid and hind tibiae sometimes narrowly yellow; tarsi dirty yellow.

Genitalia: (Figs 437-441 ) Epandrium shallow, loosely articulated with surstylus. Surstylus small, lobate, short setose. Cercus small, narrow. Hypandrium relatively thin with inner lobe broad and wrapped around dorsum of postgonite; lobe with two long inner setae and anteromedial process with several sockets. Postgonite long and narrow with dorsomedial tooth and upcurved split apex with two subapical setae. Phallus slightly twisted. Phallophorus short. Basiphallus composed of two broad, narrow plates, right 1/2 emarginate ventromedially; weakly connected to lobate paraphallus. Mesophallus not evident. Distiphallus 1/2 length of basiphallus, subcylindrical with base swollen and basally desclerotised, with indistinct ventromedial suture, apically widened and fringed; surrounded by subspherical sclerotised ball that is open dorsoapically and strengthened by transverse band dorsobasally. Ejaculatory apodeme evenly pigmented with narrow stalk and relatively broad apex.

Hosts.

Caprifoliaceae - Diervilla , Lonicera , Symphoricarpos , Triosteum ( Eiseman et al. 2021).

Distribution.

Canada: AB, BC*, MB, ON*, QC*, SK*. USA: CA, CO*, IA, ID, IL*, KS, MA, MD*, MI, NC, OK, WA, WI*.

Type material.

Lectotype: USA. WA: Kamiac Butte, 1.vi.1912, A.L. Melander collection (1♂, USNM).

Paralectotypes: USA. ID: Troy, 14.vi.1908, A.L. Melander (2♀, USNM), Moscow, Mt., A.L. Melander, 3.vi.1911 (2♂, USNM), 6.vii.1912 (1♀, USNM), 5.vi.1912 (1♂, USNM), Collins, “Aug.”, A.L. Melander (1♂, USNM), WA: Kamiac Butte, 1.vi.1912, A.L. Melander (2♀, USNM), Pullman, A.L. Melander, 10.vi.1911 (1♂, USNM), 12.v.1912 (1♀, USNM), 19.v.1912 (1♂ 2♀, USNM), Oroville, A.L. Melander (1♀, USNM), Oroville, 1.v.1912, A.L. Melander (1♂, USNM).

Additional material examined.

Canada. AB: Edmonton , "Em. 31-8-71", ex honeysuckle (1♀, CFS), Edmonton , White Mud Creek , G.C.D. Griffiths, died after spraying, 9.vii.1975 (2♂ 1♀, CNC), 14.vii.1975 (3♂ 3♀, UASM), 23.vii.1975 (6♂ 8♀, UASM), Elk Island Nat. Park , 19.vi.1971, from larvae on Symphoricarpos occidentalis , emerged 13-14.v.1972, E50, G.C.D. Griffiths (3♂ [with puparia], UASM), Elk Island Nat. Park , 4.vii.1971, from larva on Symphoricarpos occidentalis , emerged 11-13.v.1972, E87, G.C.D. Griffiths (6♂ 4♀ [with puparia], UASM), Edmonton , 15.ix.1973, from larvae on Lonicera dioica , emerged 18-26.iv.1974, E203, G.C.D. Griffiths (1♂ 2♀ [with puparia], UASM), Edmonton , White Mud Creek , 11-12.vi.1975, from larvae on Symphoricarpos occidentalis , emerged 5-7.vii.1975, E220, G.C.D. Griffiths (8♂ 6♀ [with puparia], UASM), Edmonton , White Mud Creek , 19.vi.1975, from larva on Symphoricarpos albus , emerged 11-13.vii.1975, E226, G.C.D. Griffiths (3♂ 1♀ [with puparia], UASM), Edmonton , White Mud Creek , 23.ix.1975, from larvae on Symphoricarpos occidentalis , emerged 18.iv.1976, E286, G.C.D. Griffiths (1♀ [with puparium], UASM), C.E. Lee Sanctuary, Devon Sandhills , 25.viii.1979, from larvae on Symphoricarpos occidentalis , emerged 27.iv.1980, E396, G.C.D. Griffiths (3♂ [with puparia], UASM), George Lake , near Busby , 12.vi.1973, from larva on Symphoricarpos albus , emerged 22-24.iv.1974, G12, G.C.D. Griffiths (4♂ 4♀ [with puparia], UASM), George Lake , near Busby , 2.vii.1975, from larva on Symphoricarpos albus , emerged 21.vii.1975, 19-21.iv.1976, G41, G.C.D. Griffiths (2♂ 2♀ [with puparia], UASM), George Lake , near Busby , 27.vii.1875, from larvae on Lonicera dioica , emerged 11.v.1976, G52, G.C.D. Griffiths (1♂ 1♀ [with puparia], UASM), Brandon , 18.vii.1958, R.B. Madge (1♀, CNC), Morrin , 12.vi.1929, G.F. Manson (1♂, CNC), Lethbridge, J.H. Pepper, 3.vi.1929 (1♂, CNC), 5.vi.1929 (1♂, CNC), Okotoks, K.A. Spencer, 10.vi.1966 (1♀, CNC), 11.vi.1966 (1♀, CNC), BC: Robson, H.R. Foxlee, 10.v.1947 (1♀, CNC), viii.1947 (1♀, CNC), 6.v.1950 (1♀, CNC), 26.v.1947 (1♂, CNC), Elkwater L., 20.vii.1956, O. Peck (1♂ 1♀, CNC), Trinity Valley , 22.vi.1937, H.B. Leech (1♀, CNC), Hagensborg , 12.vii.1992, A. Borkent (1♂, CNC), 50 km E Bella Coola, 8.vii.1992, A. Borkent (1♂, CNC), ON: Simcoe , 29.v.1939, G.E. Shewell (1♀, CNC), Ottawa , 5.vii.1938, G.E. Shewell (1♀, CNC), Ottawa , 16.x.1956, J.R. Vockeroth (1♀, CNC), St. Lawrence Is. Nat. Park , Thwartway Is., 20.vi.1976, W. Reid (1♀, CNC), QC: Wakefield, 26.vi.1946, G.E. Shewell (1♀, CNC), Mt. St. Hilare, 500-700', 3.vi.1964, J.R. Vockeroth (1♀, CNC), SK: 18 km S Maple Creek, by small clear stream, 49°45'N, 109°29'W, 10.vii.2005, J. R. Vockeroth, yellow pan trap, CNC287400 (1 ♀, CNC) . USA. CA: San Diego Co., Julian , Symphoricarops , 4300', 9.iv.1977, K.A. Spencer (1♀, USNM), Cuyamaca, S.P, 20.iv.1977, 4200', K.A. Spencer (1♀, USNM), Alameda Co. , Berkeley , [illegible], 15.v.1977, on Lonicera involucrata , K.A. Spencer (1♀, USNM), CO: Boulder , Flagstaff Cn., 5800', 10.vi.1961, C.H. Mann (1♂, CNC), IA: Winneshiek Co. , 43°26'32.50"N, 92°0'10.32"W, 17.vi.2013, em. by 6.vii.2013, M.J. Hatfield, ex Triosteum aurantiacum (1♂, CNC), ID: Waha, 30.v.1924, A.L. Melander (1♀, USNM), IL: White Heath, 18.v.1917 (1♀, USNM), 2.vi.1917 (1♀, USNM), KS: Nat. Hist. Res., Lawrence, 28.iv.1936, J.G. Chillcott (1♂, USNM), Nat. Hist. Res., Lawrence, J.G. Chillcott, 27.iii.1954 (4♂, CNC), 28.iii.1956 (1♂, CNC), 28.iv.1956 (2♂, CNC), 27.iii.1957 (1♂, CNC), MA: Hampshire Co. , Pelham, Butter Hill Wildlife Sanctuary, 2.vi.2015, em. 23-27.vi.2015, C.S. Eiseman, ex Diervilla lonicera , #CSE1646, CNC564730, CNC564731 (2♂, CNC), MD: Chesapeake Bch., 5.vii.1924, J.R. Malloch (1♀, USNM), NC: Scotland Co. , Laurinburg, St. Andrews University, 14.iv.2016, T.S. Feldman, Lonicera sempervirens , em. 13.v.2016, #CSE2460, CNC653946, CNC653947 (2♀, CNC), WI: Valleyford, A.L. Melander, 25.vi.1924 (3♂, USNM), 19.vi.1924 (1♀, USNM), 17.v.1924 (1♀, USNM) .

Comments.

Only 16 of the 21 described paralectotypes of this species are present in the USNM. The location of the remaining types is unknown.

Figures

Figures 435 - 441. wings 435 Aulagromyza nitida (Malloch) 436 A. orbitalis (Melander) 437 - 441 A. orbitalis, male genitalia 437 ejaculatory apodeme 438 external genitalia, ventral 439 hypandrium and postgonite, ventral 440 phallus, left lateral 441 phallus, ventral.