Calycomyza avira Eiseman & Lonsdale, 2018

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 avira Eiseman & Lonsdale

Figs 446-451

Calycomyza avira Eiseman & Lonsdale, 2018: 28; Eiseman et al. 2019: 306.

Description

(from Eiseman and Lonsdale 2018). Wing length 2.1-2.5 mm (♂), 2.6 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 2.1-2.3. Eye height divided by gena height: 4.5-5.3. First flagellomere rounded. Arista pubescent. Notum subshiny.

Chaetotaxy: Two ori; two ors. Postocellar and ocellar setae well-developed. Three dorsocentral setae, third thin, <1/2 length of second 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 to base of posterior ors along fronto-orbital plate that is slightly darker in tentatively associated female. Thorax dark brown with postpronotum (excluding dark anteromedial spot confluent with margin), notopleuron (excluding dark elongate sublateral spot) and small anterolateral spot behind suture yellow; posterodorsal corner of anepisternum yellow along suture. Calypter margin yellow and hairs brown. Halter white. Legs and abdomen dark brown with fore knee yellow.

Genitalia: (Figs 446-451 ) Basiphallus composed of one pair of lateral sclerotised bars on distal 1/2. Paraphallus absent. Hypophallus short and entirely membranous. Mesophallus short, slightly longer than wide, round and slightly compressed dorsoventrally; minute, dark medial sclerite present between mesophallus and distiphallus. Distiphallus short with tubules fused and folded, lateral margins sclerotised at stem-like base, short medial bowl with inner face heavily spinulose. CT males with bowl of distiphallus narrower and inner processes separate and not as strongly haired.

Hosts.

Asteraceae - Bidens aristosa ( Eiseman et al. 2019), B. frondosa .

Distribution.

USA: CT, MA, NC, NY, WV.

Type material.

Holotype: USA. CT: Redding, 31.v.1930, A.L. Melander (1♂, USNM).

Paratypes: USA. CT: Redding, 1.vi.1929, A.L. Melander (1♂, USNM), MA: Berkshire Co., Sheffield, 9.vii.2014, em. by 28.vii.2014, C.S. Eiseman, ex Bidens frondosa , #CSE1225, CNC384838 (1♂, CNC), NY: Letchworth State Park, 13.vi.1963, pond margin, W.W. Wirth (1♂, CNC), NC: Durham Co., Durham, Grandale Drive, 14.vii.2017, em. 1-3.viii.2017, T.S. Feldman, ex Bidens , #CSE4047, CNC939843, CNC939844 (1♂ 1♀, CNC), WV: White Sulfur Springs, 16.vi.1970, G. Steyskal (1♂, USNM).

Additional material examined.

USA. MA: Plymouth Co., W Bridgewater, 41°59'44.50"N, 71°3'18.48"W, 15.viii.2013, ex. Bidens frondosa , em. by 5.v.2014, C.S. Eiseman, #CSE1101, CNC384790 (1♀, CNC) .

Figures

Figures 446 - 451. Calycomyza avira Eiseman and Lonsdale, male genitalia, West Virginia male 446 external genitalia, anterior (subepandrial sclerite shaded) 447 external genitalia, posterior 448 external genitalia, ventral 449 distiphallus, ventral (Connecticut male) 450 phallus, ventral 451 phallus, left lateral. Originally published in Eiseman and Lonsdale (2018).