Nemorimyza maculosa (Malloch)

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

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Nemorimyza maculosa (Malloch)


Nemorimyza maculosa (Malloch)

Figs 660-666 View Figures 660–666

Agromyza setosa Loew, 1869. Misidentification. Coquillett 1898: 78.

Agromyza maculosa Malloch, 1913: 302. Frost 1924: 45; Malloch 1934: 476.

Agromyza guaranitica Brèthes, 1920: 283. Spencer 1963 [synonymy].

Dizygomyza maculosa . Blanchard, 1938: 358.

Phytobia (Amauromyza) maculosa . Frick, 1952a: 393, 1957: 393, 1959: 378; Spencer 1963: 336.

Amauromyza maculosa . Spencer, 1967: 8.

Amauromyza (Annimyzella) maculosa . Spencer, 1981: 144; Spencer and Steyskal 1986b: 80.

Nemorimyza maculosa . Zlobin, 1996: 275; Martinez and Etienne 2002: 41; Benavent-Corai et al. 2005: 32; Scheffer and Lonsdale 2018: 87; Eiseman and Lonsdale 2018: 62; Monteiro et al. 2019: 175.


Wing length 2.2-2.3 mm (♂), 2.2-3.1 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 0.6-0.8. Eye height divided by gena height: 6.4-8.4. First flagellomere rounded, slightly higher than long, hairs slightly longer and denser along distal margin. Gena narrow, strongly angled upwards; cheek very narrow. Fronto-orbital plate slightly to moderately distinct, extending slightly medially to base of fronto-orbitals, widest at level of posterior ors. Lunule semi-circular. Apex of wing between R4+5 and M1.

Chaetotaxy: Three ori; two ors. Ocellar and postocellar setae finer and slightly shorter than fronto-orbitals. Ocellar setulae reclinate, in one row. Four dorsocentrals, one presutural, decreasing in length anteriorly. Acrostichal seta short but well-developed. Six rows of acrostichal setulae. Fore tibia without lateromedial seta. Mid tibia with two strong lateromedial setae.

Colouration: Body mostly dark brown to blackish; lunule brownish orange to yellowish with silvery pruinosity; antenna and frons between fronto-orbital plates sometimes slightly paler; gena sometimes paler or reddish, ventral margin with dark brown strip; postpronotum and notopleuron sometimes with small, limited orangish mottling; halter yellow; calypter entirely white. Notum subshiny.

Genitalia: (Figs 660-666 View Figures 660–666 ) External genialia, subepandrial sclerite, and hypandrium as described for N. posticata . Postgonite with anterior 1/2 relatively short and stout with apex cleft and single seta shifted anteriorly; posterior 1/2 pale and split. Phallus strongly twisted to right past phallophorus. Halves of basiphallus narrow, flat and curved ventrally around mesophallus at apex; left 1/2 with broad mediobasal plate-like extension reaching venter of shaft. Hypophallus broad and plate-like with lateral margin more thickly sclerotised and anterior surface with one pair of semi-circular fins medially. Paraphallus relatively dark, U-shaped, and wrapping around sides of mesophallus; paler and united ventromedially. Distiphallus with broad, dark, basal section that is confluent with mesophallus and ventromedially strengthened with longitudinal bands; apically with one pair of pale, diverging tubules that are ca. as long as basal section and appear to be haired, although surface is continuous. Mesophallus subovate, nearly as large as basal section of distiphallus, enclosing swollen apical section of ejaculatory duct; with large ventral fossa. Ejaculatory apodeme with wide asymmetrical base, stem narrow with apex grading into narrow, paler blade; sperm pump sclerotised along venter.


Asteraceae - Acanthospermum , Ageratum , Arctium , Artemisia , Aster , Baccharis , Bellis , Bidens , Calendula , Chromolaena , Chrysanthemum , Conyza , Cynara , Dahlia , Dendranthema , Emilia , Erechtites , Erigeron , Eupatorium , Gaillardia , Gamochaeta , Grindelia , Helenium , Helianthus , Lactuca , Melanthera , Mikania , Packera , Senecio , Solidago , Sonchus , Synedrella , Tagetes , Taraxacum , Zinnia ( Benavent-Corai et al. 2005; Diaz et al. 2015; Eiseman and Lonsdale 2018).


Canada: ON (Spencer, 1981). USA: widespread in United States, including Hawaii, but not Alaska. Argentina, Bahamas, Barbados, Bermuda, Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Guadeloupe, Grand Cayman, Guyana, Martinique, Mexico ( Valenzuela-Escoboza et al. 2017), Peru, Puerto Rico, Dominican Republic, Saint-Martin, Trinidad, Uruguay, Venezuela ( Martinez and Etienne 2002). Introduced to Madeira and Canary Islands ( Černý et al. 2018).

Type material.

Holotype [maculosa]: USA. NY: Jamaica, x.1986, bred from chrysanthemum leaves, Cat. No. 15641 (1♀, USNM). [Not examined]

Syntype [ Agromyza guaranitica ]: Brazil. Rio Grande do Sul, larvae mining leaves of cultivated Chrysanthemum [type information not given]. [Not examined]

Material examined.

Canada. ON: Ottawa, 16.vii.1976, P. Dang, leaf mine in Aster , CNC480518 (6 puparia [gel capsule], CNC), St. Lawrence Is. Nat. Park , McDonald Is., 20.viii.1976, W. Reid, Code 4472-B, CNC480517 (1♂, CNC) . Chile. Elqui: Port Tres Cruces , Coquimbo, 30.x.1957, L.E. Pena, CNC480520 (1♀, CNC), Hda. Illapel, Coquimbo, 600-1000 m, 24-25.x.1954, L. Pena, CNC480196 (1♂, CNC) . USA. FL: Miami-Dade Co., Redlands, 25°31'N, 80°30'W, 7.i.2012, R. Diaz and J. McClurg, ex leaves of Mikania micrantha CNC480525-480530 (2♂, 4♀, CNC), Palm Beach Co. , Boynton Beach , 2.i.2016, T.S. Feldman, Emilia em. 4.i.2016, #CSE2227, CNC654342-654345 (2♂ 1♀ 1puparium, CNC), HI: Oahu , Honolulu , 0-121 m, J.R. Vockeroth, ex blotch mine in Bidens pilosa leaf, em. 26.ix.1966, CNC480522, CNC480521 (1♂ 1♀, CNC), MA: Worcester Co. , Sturbridge, 42°2'28.84"N, 72°5'32.47"W, 5.vii.2016, C.S. Eiseman, Erechtites hieraciifolia , em. 23-24.vii.2016, #CSE2797, CNC654276- 654289 (7♂ 6♀ 1puparium, CNC), Nantucket Co. , Nantucket, Little Sesachacha Pond, 2.ix.2012, J.A. Blyth, ex Erechtites hieracifolia em. 3.x.2012, #CSE109, CNC480523, CNC480524 (2♂, CNC), Nantucket Co. , Nantucket, N. Liberty St. , 41°17'N, 70°6'W, 7.viii.2012, C.S. Eiseman, ex Erigeron canadensis , em. 23.viii.2012, #CSE43, CNC480555, CNC480556 (1♂ 1♀, CNC), NC: Scotland Co. , Laurinburg, St. Andrews University ,, em., T.S. Feldman, ex Erechtites hieraciifolia , #CSE1622, CNC653950-653953 (3♀ 1 puparium, CNC), OH: Hocking Co. , South Bloomingville , Deep Woods Farm, 6.viii.2016, C.S. Eiseman, Erigeron canadensis , em. 24.viii.2016, #CSE2935, CNC654477 (1♂, CNC), Hocking Co. , South Bloomingville , Deep Woods Farm, 6.viii.2016, C.S. Eiseman, Erechtites hieraciifolia em. 26-29.viii.2016, #CSE2953, CNC638902 (1♀, CNC), SC: Hilton Head Is., 12.vii.1965, H.F. Howden, CNC480519 (1♀, CNC), OK: Payne Co. , Mehan, 36°0'51.62"N, 96°59'48.28"W, 30.v.2016, em., M.W. Palmer, Grindelia squarrosa , #CSE2615, CNC634780, CNC634781 (2♀, CNC) GoogleMaps .














Nemorimyza maculosa (Malloch)

Lonsdale, Owen 2021

Agromyza guaranitica

Brethes 1920

Agromyza maculosa

Malloch 1913

Agromyza setosa

Loew 1869