Cerodontha (Icteromyza) vockerothi Boucher, 2012

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 (Icteromyza) vockerothi Boucher

Figs 539 , 540

Cerodontha (Icteromyza) vockerothi Boucher, 2012: 145.

Description.

Wing length 2.2 mm (♂), ~2.9 mm (♀). Length of ultimate section of vein M4 divided by penultimate section: 1.2. Eye height divided by gena height: 6.9-5.0. Frons slightly projecting anteriorly. Fronto-orbital plate ill-defined; ocellar triangle ill-defined, appearing to nearly reach lunule. Arista densely pubescent, narrow along length. First flagellomere small, circular. Lunule semi-circular, slightly higher than wide.

Chaetotaxy: Three thin ori (as long as ors or ~ 3/4 length, with anterior setae often shortest); two stout ors. Ocellar and postocellar setae slightly longer than fronto-orbitals. Four dorsocentral setae, decreasing in length anteriorly; second dorsocentral apparently shifted anteriorly. Four scattered rows of acrostichal setulae reaching level of third dorsocentral.

Colouration: Setae dark brown. Body subshiny with frons micropubescent, almost velvety. Frons brown with faint orange tint, becoming darker posteriorly to vertex and laterally along fronto-orbital plate past ors, paler along fronto-orbital plate anteriorly; dark brown spot encompassing ocellar tubercle; lunule contrastingly light yellow; back of head, clypeus and palpus dark brown; lunule and face light yellow; dorsum of gena, parafacial and narrow region around base of scape orange with brown tint. Thorax dark brown. Calypter margin yellow, hairs light brown. Wing veins dark brown, becoming yellowish orange to base. Halter yellow. Legs dark brown with apices of femora light yellow for length equalling width of femur; bases of tibiae narrowly light yellow. Abdomen dark brown.

Genitalia: (Figs 539 , 540 ) (from Boucher 2012: figs 83-86). Hypophallus appearing rod-like, apically split. Paraphallus simple, rod-like, small. Mesophallus subequal in length to distiphallus, narrow with slight basal swelling. Distiphallus split into one pair of narrow tubules that are divergent and curved upwards. Ejaculatory apodeme small with narrow blade.

Host.

Unknown.

Distribution.

Canada: ON. USA: VA.

Type material.

Holotype: USA. VA: Arlington, vi.1938, J.R. Malloch (1♂, USNM). [Not examined]

Paratype: Canada. ON: Mer Bleue, 19.vii.1963, in marsh, J.R. Vockeroth (1♀, CNC).

Figures

Figures 535 - 540. Cerodontha (Icteromyza) longipennis (Loew), male genitalia 535 hypandrium and postgonite, ventral 536 ejaculatory apodeme 537 phallus, ventral 538 phallus, left lateral 539, 540 C. (I.) vockerothi Boucher (illustrations from Boucher 2012) 539 apex of phallus, left lateral 540 same, ventral.