Phytomyza opacae Kulp

Figs 793-795

Phytomyza opacae Kulp, 1968: 21. Spencer and Steyskal 1986b: 215; Lonsdale and Scheffer 2011: 1198; Scheffer and Lonsdale 2018: 88; Scheffer et al. 2021.

Description.

As described for P. ilicicola except as follows:

Wing length 1.5-1.9 mm (♂), 1.8-2.0 mm (♀). Eye height divided by gena height: 4.2-5.2.

Colouration: Fronto-orbital plate pale, usually with narrow dark line extending to base of posterior fronto-orbital, but rarely reaching base of posterior ori.

Genitalia: (Figs 793-795) Surstylus broadly rounded. Epandrial process broad with slight ventral curve. Sclerite of hypophallus semi-circular with anterior margin slightly concave. Paraphalli tapered along outer-distal margin and slightly bowed, not parallel. Mesophallus nearly 7 × longer than wide. Arms of distiphallus slightly shorter than mesophallus, separate and not strongly diverging.

Hosts.

Aquifoliaceae - Ilex opaca, I. cassine, I. aquifolium, I. amelenchier (Scheffer et al. 2021).

Distribution.

USA: DC, DE, FL, MD, NC, NJ (leaf mines only), NY, SC.

Type material.

Holotype: USA. MD: Prince George Co., College Park, 21.v.1964, em. 29.v.1964, C.W. McComb, Type No. 67776 (1♂, USNM).

Additional material examined.

See Lonsdale and Scheffer (2011).