Calycomyza verbenae (Hering)

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

Calycomyza verbenae (Hering)

Figs 484-489

Agromyza jucunda . Misidentification, in part. Coquillett 1898: 77.

Dizygomyza (Calycomyza) verbenae Hering, 1951: 42.

Phytobia (Calycomyza) verbenae . Frick, 1953: 70, 1956: 300.

Calycomyza verbenae . Spencer and Steyskal 1986b: 151; Martinez and Etienne 2002: 30; Eiseman and Lonsdale 2018: 36.

Description.

Wing length 1.8-2.1 mm (♂), 2.0-2.4 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 1.8-3.0. Eye height divided by gena height: 4.5-5.4. First flagellomere circular. Notum subshiny.

Chaetotaxy: Two ori; two ors. Postocellar and ocellar setae well-developed. Two well-developed dorsocentral setae, setula in front of anterior dorsocentral thin and nearly 1/2 the length of that seta, appearing as third dorsocentral. Six rows of acrostichal setulae. Two posteromedial setae on mid tibia.

Colouration: Setae dark brown. Head yellow with back of head, clypeus, palpus, ocellar tubercle and antenna dark brown; frons brownish in posterolateral corner with faint stripe extending from posterior margin of frons to base of posterior ors Thorax dark brown with postpronotum (excluding dark anteromedial spot confluent with margin), notopleuron (excluding dark elongate sublateral spot), small anterolateral spot behind suture yellow, and scutum faintly to distinctly yellowish on suture near sides of scutellum. Halter white. Calypter margin brownish and hairs brown. Legs and abdomen dark brown with fore knee yellow.

Genitalia: (Figs 484-489 ) Epandrium and surstylus with dense patch of tubercle-like setae on inner-distal margin. Hypandrium with one seta on broad inner lobe. Postgonite large, broad, rounded apically. Basiphallus sclerotised along apical and left lateral margins. Paraphallus absent. Hypophallus broad, wider apically and with sclerotised lateral margins. Mesophallus relatively broad with base bulbous and with strong ventral curve subapically. Distiphallus medially divided with halves closely adjoined, very dark; outer cover broadly rounded, slightly angled dorsally, enclosing dark inner process that slightly protrudes. Ejaculatory apodeme stout, typical of genus.

Hosts.

Verbenaceae - Glandularia , Verbena , Stachytarpheta (Frick 1953, Benavent-Corai et al. 2005; Eiseman and Lonsdale 2018)

Distribution.

USA: AZ, DC, FL, IA, IL, IN, NC, NJ, NM, OH; verification required for GA, MD, MS, NY, PA; leaf mines requiring verification from KS, MA, MD ( Eiseman and Lonsdale 2018). Brazil.

Type material.

Holotype: USA. NM: State College, near Las Cruces, 7-10.vii.1949, J.R. Eyer, ex. Verbena hybrida , cultivated var. (1♀, USNM).

Additional material examined.

USA. DC: Washington, 23.viii.1928, reared from Verbena , W.H. White, Chittenden No. 1084 (2♀ [one with puparium], USNM), Washington, 23.viii.1915, leaf miner on Verbena , W.H. White (1♀, USNM), IL: Algonquin, Coquillett (1♂, USNM), Chicago, A.L. Melander (1♂, USNM), IN: Bluffton , 15.viii (1?, USNM), Bluffton , 1905, Verbena leaf miner (1♂ 1♀ 1puparium, USNM), Layfayette , “x-13”, J.M. Aldrich (1♂, USNM), OH: Dayton , 13.vi.1906, mining in Verbena leaf, N.B. Jervett (2♂, USNM), Dayton , 13.vi.1906, mining in Verbena leaf, issued 28.vi.1906 (1♀, USNM), Dayton , 18.vi.1906, mining in Verbena leaf, issued 28.vi.1906 (1♀, USNM), TX: Llano Co., Enchanted Rock, 15.vi.1953 (1♂, USNM). State unknown [likely IN]: Verbena leaf miner, "7/30, 82, Agromyza jucunda v.d.Wulp" (1♂ 4♀ [with puparia, all on same pin], USNM), "5465(?), Oscinis malváe Burg." (3♂ 2♀ [with puparia, all on same pin], USNM), "5465(?), July 20/74", collection C.V. Riley (1♂, USNM), "214L(?), Oscinis malvae Bur. On Verbena " (2♂ 1♀ 1destroyed, USNM). No locality data: Verbena leaf miner, 30.vii.1882 (1♂ 4♀ [two with puparia, same pin], USNM), [illegible] (3♂ 2♀ [four with puparia, same pin), USNM], [illegible], 20.vii.1914, C.V. Riley (1♂, USNM), Dept. Noja[?] 35, 31.x.1881 (1♀, USNM), No. 1035, leaf miner on Verbena , 1.x.1881 (1♂ [with puparium], USNM), 214L[?], Oscinis malvae on Verbena (2♂ 1♀ 1?, USNM), Dept. No. 1035, Oscinis malvae , on 26.x.1881 (1♂ [with puparium], USNM) .

Comments.

The genitalia of Calycomyza verbenae are highly similar to those of C. eupatorivora Spencer ( Spencer and Stegmaier 1973), which is found on Eupatorium odoratum in Jamaica, but possibly also occurs in Brazil and Venezuela (reared from Alomia fastigata and Eupatorium odoratum , respectively), although the latter differs in having a broad yellow posterolateral spot on the scutum, a slightly yellowish scape and pedicel, developed paraphalli, a shorter mesophallus that appears nearly ovate in profile, and a distiphallus that is much more strongly angled dorsally.

See comments for Calycomyza avira .

Figures

Figures 480 - 489. Calycomyza promissa (Frick), male genitalia 480 ejaculatory apodeme 481 hypandrium and postgonite, ventral 482 hypandrial complex, left lateral 483 phallus, ventral 484 - 489 C. verbenae (Hering), male genitalia 484 ejaculatory apodeme 485 external genitalia, posterior 486 external genitalia, ventral 487 hypandrium and postgonite, ventral 488 hypandrial complex, left lateral 489 phallus, ventral.