Calycomyza frickiana Spencer, 1986

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 frickiana Spencer

Figs 460-463

Calycomyza allecta . Misidentification, in part. Frick 1956: 298 [see Spencer and Steyskal (1986b) for details].

Calycomyza frickiana Spencer & Steyskal, 1986b: 299.

Description

(Fig. 463 ). Wing length 2.3-2.5 mm (♂), 2.5-2.9 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 1.9-2.6. Eye height divided by gena height: 3.8-4.8. First flagellomere circular. Notum subshiny.

Chaetotaxy: Two ori; two ors; third ori sometimes present on one side. Ocellar seta long, but sometimes not much longer than tubercle. Postocellar well-developed. Two well-developed dorsocentral setae, with setula in front of anterior dorsocentral short but well-developed, 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. Thorax dark brown with postpronotum (excluding dark anteromedial spot confluent with margin), notopleuron (excluding dark elongate sublateral spot) and lateral margin of postsutural scutum yellow. Halter white. Calypter margin and hairs brown. Legs and abdomen dark brown with fore knee yellow.

Genitalia: (Figs 460-462 ) Epandrium and surstylus with dense patch of tubercle-like setae on inner-distal margin. Hypandrium narrow, lobe wrapped around postgonite, with one anteromedial seta. Postgonite narrow posteriorly and strongly tapered apically. Basiphallus sclerotised laterally and subapically, ventral membrane also slightly sclerotised. Hypophallus short, rounded and lightly sclerotised laterally at base. Paraphallus pointed, strongly sclerotised, not connected medially by membrane. Mesophallus as long as basiphallus and subcylindrical. Distiphallus globular and undivided with subbasal constriction and paired ventromedial sclerotised bands.

Hosts.

Asteraceae - Rudbeckia spp. (including R. laciniata ), Helianthus sp., Bidens frondosa ( Spencer and Steyskal 1986b). Bidens is considered to be the primary host ( Spencer 1990).

Distribution.

USA: IL, IN, MD, MN, NY, PA, SD, VA, WI(?).

Type material.

Holotype: USA. NY: Seneca Co., East Varick, ex. Bidens frondosa , 30.x.1956 (1♂, lost [originally deposited USNM]).

Paratypes examined.

USA. IL: Urbana, 20.vi.1915, J.M. Aldrich (1♀, USNM), Lafayette, v.1927, J.M. Aldrich (1♂, USNM), SD: Erwin, vi.1908, J.M. Aldrich (1♂ 1♀, USNM), VA: Blacksburg, 2100', 28.v.1962, J.G. Chillcott, CNC391404 (1♀, CNC).

Additional material examined.

USA. MD: Elkton , 84-53, DFB, em. 28.viii.1984, a leaf miner (1♀, USNM), VA: Fairfax Co., Turkey Run Park , nr. Mouth of Turkey Run, 38°57.9'N, 7°09.4'W, Malaise trap, 4-27.ix.2007, D.R. Smith (1♀, USNM) .

Comments.

Calycomyza frickiana is the only Delmarva Calycomyza with a dark calypter and a fronto-orbital plate that is entirely yellow around the base of the fronto-orbitals. Outside of the Delmarva states, some C. ambrosiae (Frick) ( Spencer and Steyskal 1986b: figs 939, 940) also share these features, but the unique distiphallus and strong paraphallus of C. Calycomyza frickiana are diagnostic.

Figures

Figures 460 - 465. Calycomyza frickiana Spencer, male genitalia 460 hypandrium and postgonite, ventral 461 phallus, left lateral 462 phallus, ventral 463 C. frickiana, wing 464, 465 C. gigantea (Frick), male holotype genitalia 464 ejaculatory apodeme 465 phallus, ventral.