Cerodontha (Poemyza) kennethi Zlobin, 1997

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

Cerodontha (Poemyza) kennethi Zlobin

Cerodontha (Poemyza) kennethi Zlobin, 1997: 89.

Cerodontha ( Poemyza ) kennethsi. Lapsus. Zlobin 1997: 89 [figure caption].

Description.

Wing length 1.7 mm (♂), 1.7-2.1 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 1.2-1.8. Eye height divided by gena height: 6.8-8.7.

Chaetotaxy and colour as described for C. (P.) muscina, except as follows: anterior ori reduced to absent; dorsocentral setae strongly decreasing in length anteriorly with fourth dorsocentral barely evident; fronto-orbital plate always at least partially brown anterior to anterior ors; cheek sometimes dark brown; apex of fore coxa yellow; basal 1/5-1/4 of femora brown with pigment on fore femur more reduced; tibiae and tarsi light brown with fore leg palest, and apical segments on mid and hind tarsi darker with apical segment sometimes brown. Paratypes with only extreme base of femora brown and notopleuron with distinct, large irregular light yellow spot.

Genitalia: Not examined. Illustrated in Zlobin (1997: figs 7-9).

Host.

Unknown.

Distribution.

Canada: ON. USA: MD*, NC*, PA, TX, VA*, WV*.

Type material.

Holotype: Canada. ON: Renfrew Co., 15 km S Palmer Rapids, 27.vii.1986, R. Danielsson (1♂, ZIL). [Not examined]

Paratypes examined.

USA. TX: Kerrville, 21.iv.1959, J.F. McAlpine, CNC48115, CNC481160 (2♀, CNC).

Additional material examined.

USA. MD: P.G. Co., Camp Springs, 15.vii.1979, Malaise trap, G.F. Hevel (1♀, USNM), NC: Highlands, 16.viii.1957, W.R. Richards, CNC481161 (1♀, CNC), VA: Shenandoah, Big Meadows, 2.vii.1939, A.L. Melander (1♂, USNM), WV: Hardy Co., Lost River St. Park , 10.vii.1977, Malaise trap, W.W. Wirth (1♀, USNM) .

Comments.

This species is highly similar in appearance to the relatively abundant Cerodontha muscina , but can be differentiated by having the fore femur yellow for at least the distal 3/4 of its length, not the distal 1/2 or less. Newly examined material greatly expands the known distribution of this species in the northeastern United States.