Ophiomyia labiatarum Hering, 1937

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

Ophiomyia labiatarum Hering

Figs 78-80 , 360-366

Ophiomyia labiatarum Hering, 1937: 509. Spencer 1969: 87, 1976: 67; Spencer and Steyskal 1986b: 51; Černý 2018: 122.

Description

(Figs 78-80 ). Wing length 2.1-2.4 mm (♂), 2.4-2.5 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 0.7-1.0. Eye height divided by gena height: 8.0-8.4 (4.0 in one dissected VA male from Turkey Run). Facial carina and medial bulb distinct; carina as wide as bulb dorsally or slightly narrower, with sides usually parallel and never strongly diverging; bulb usually strongly to shallowly furrowed or heart-shaped. Clypeus narrowed and produced anteriorly. Anterior margin of buccal cavity narrowed and straight or rounded. Eye slightly angled diagonally. Gena slightly produced, forming an angle slightly <90°. Ocellar triangle and fronto-orbital plate subshiny. Notum shiny.

Chaetotaxy: Male vibrissal fasciculus distinct, nearly as long as gena, but only forming a discrete point in male with three ori on both sides. Two ori (sometimes three on one side, rarely on both sides); two ors. Mid tibia with one posteromedial seta.

Colouration: Body, including halter dark brown. Abdomen sometimes with faint coppery/golden shine. Wing veins brown. Calypter margin and hairs dark brown.

Genitalia: (Figs 360-366 ) Metepiphallus with one pair of ventromedial spines. Ventral subapical membrane around phallus pronounced and keel-like (less developed in male with three ori on both sides). Basiphallus with sclerotised dorsobasal plate and right lateral band. Base of mesophallus and distiphallus level. Distiphallus with small transverse sclerite at base of mesophallus; distiphallus subovate (slightly flattened apically) with inner basal margin spinulose and inner distal margin with shallow bumps; apex ill-defined.

Hosts.

Lamiaceae - Calamintha , Clinopodium , Galeopsis , Lamium , Leonurus , Nepeta , Prunella , Salvia , Satureja , Scutellaria , Stachys ( Spencer 1976; Spencer and Steyskal 1986b; Benavent-Corai et al. 2005). Asteraceae - Solidago canadensis *.

Distribution.

Canada: AB, NB*, ON, QC. USA: DE*, IN, MD*, PA*, VA*. Europe, Cyprus, Egypt, Israel, Turkey ( Černý, 2018).

Type material.

Lectotype: Germany. Meckelenburg (1♂, ZMHU). [Not examined]

Material examined.

Canada. AB: Wabamun, caught on Solidago , 1-3.vii.1966, K.A. Spencer, CNC358537 (1♂, CNC), NB: Kouchibouguac N.P., 13.vii.1977, J.F. McAlpine, IDEMA illustration, " L. Yuzyk July 1981 ", code-6042J, CNC358542-358544 (2♂, 1♀, CNC), 23.v.1977, Hanley and Cooper, code-5113Q, CNC358545 (1♀, CNC), 9.vii.1977, J.F. McAlpine, code-6023Q, CNC358546 (1♂, CNC), ON: Midland, swampy woods, balsam poplar, 2.v.1959, J.G. Chillcott, CNC358551 (1♂, CNC), Ottawa, 22.vii.1954, W.R.M. Mason, CNC358550, CNC358552 (1♂ 1♀, CNC), St. Lawrence Is. Nat. Park , Thwartway Is., 15.vii.1976, A. Carter, code 4118-J, CNC358547 (1♂, CNC), 21.vii.1976, W. Reid, code 4174-N, CNC358549 (1♀, CNC), 24.vii.1976, W. Reid, code 4198-L, CNC358548 (1♀, CNC), QC: Beech Grove, 23.vi.1951, J.F. McAlpine, CNC358539, CNC358540 (2♂, CNC), Harrington Lk., Gatineau Pk., 7.vi.1954, E.E. Sterns, CNC358541 (1♂, CNC) . France. [Lower Normandy]: Verson b. Caen , 4880, 9.viii.1942, Dr. H. Buhr. Nr., mine an Stachys recta CNC358538 (1♂, CNC) . USA. DE: Newark, spring 1974, R.W. Rust (1♂, USNM), IN: Lafayette , 6.vii.1915, reared from catnip, issued 13.vii.1915, Satterthwalt (1♂, USNM), Lafayette , swept from grass, “v-17”, J.M. Aldrich (1♂, USNM), Lafayette , “iv-6”, swept from wint. wheat (1♂, USNM), MD: Kent Is., “35-13-4”, Seek and Nixon (1♂, USNM), College Park , 28.v.1939, C.T. Greene (1♂, USM), Beltsville, B.H. Braun, i.1972 (1♂, USNM), i.1972, ex. Solidago stems (2♂, USNM), i.1972, reared ex. Eurosta solidaginis gall (1♂ 2♀, USNM), Beltsville , 12.iv.1972, em. Indoors, B.H. Braun, ex. stem Solidago canadensis (1♂ 1♀, USNM), Montgomery Co., Clarksburg , Little Bennett Reg. Park, 21.ix.1990, W.E. Steiner, M.J. and R. Molineaux (1♂, USNM), PA: Kimblesville , spring 1974, R.W. Rust (1♂, USNM), VA: Fairfax Co. , Turkey Run Park , nr. mouth of Turkey Run , 38°57.9'N, 7°09.4'W, Malaise trap, 18-30.v.2007, D.R. Smith (1♂, USNM) .

Comments.

Ophiomyia labiatarum , a polyphagous Lamiaceae feeder also found on Solidago with a relatively northern distribution, is somewhat variable with regards to head morphology (although the facial bulb is always shiny dorsally), but the male phallus can be readily diagnosed.

Figures

Figures 78 - 83. Ophiomyia labiatarum Hering, head 78 anterior 79 lateral 80 ventral 81 Ophiomyia carolinensis Spencer, female (C. Eiseman - Massachusetts) 82 Ophiomyia coniceps (Malloch), male (C. Eiseman - Massachusetts) 83 Ophiomyia sp. (S. A. Marshall - Virginia, Butt Mtn.).

Figures 360 - 366. Ophiomyia labiatarum Hering, male genitalia 360 external genitalia, ventral (subepandrial sclerite shaded) 361 external genitalia, left lateral 362 external genitalia, posterior 363 external genitalia, anterior 364 hypandrium, ventral 365 hypandrial complex, left lateral 366 phallus and proepiphallus, ventral.